Unit 6 知识梳理-原卷版+解析版【学霸提优】新沪教版七下英语单元高效复习必备

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名称 Unit 6 知识梳理-原卷版+解析版【学霸提优】新沪教版七下英语单元高效复习必备
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/ 让教学更有效 高效备课备考 | 英语学科
Unit 6 Electricity everywhere
单元小结
学习目标:本单元谈论Electricity电。阅读一个关于电的故事,要求学生了解几种发电的形式,号召大家节约用电,能读懂这方面的文章。
语法目标:学习情态动词用法。
听说目标:能听懂平房内关于电的有趣事实的短文,谈论安全用电方法。
写作目标:学会写关于家庭用电规则的短文。
目录
知识要点一、重点单词,短语及句式
要点1 重点短语 练习
要点2 重点句式 练习
【精讲精练】
要点1 electricity/electric的用法 练习
要点2 rule的用法 练习
要点3 try to do/try doing的用法 练习
要点4 while的用法 练习
要点5 join in/take part in/join的用法 练习
要点6 have something in common的用法 练习
要点7 run out/run out of的用法 练习
要点8 turn out的用法 练习
要点9 since的用法 练习
要点10 connect的用法 练习
要点11 too, also, as well, either的用法 练习
要点12 power的用法 练习
要点13 care for/care about的用法 练习
要点14 until/not…until的用法 练习
要点15. against 的用法 练习
要点16 instruction的用法 练习
知识要点二、语法
要点1 情态动词 25
知识要点三、书面表达
要点1 话题分析 27
要点2 词汇短语积累 28
要点3句式积累 28
要点4实战演练 29
【重点短语】
1.have something in common 有相同的特征(或特点等)
2. light bulb 电灯泡
3.air conditioner 空调机;空调设备
4. video game 电子游戏
5.run out of 用完;耗尽
6. go bad 变质
7. electric car 电动汽车
8. electrical appliance 电器
9. care about 关注;担忧
10. climate change 气候变化
11. join in 参加;加入
12.turn out 结果,证明……
13.get dark 变黑,变暗
14. even worse 更糟糕的是
15.by hand 用手
16.go on a bike trip 骑自行车旅行
17.in the countryside 在乡村
18.imagine doing sth. 想象做某事
19.the amount of ……的数量(不可数)
20. at the speed of...以…的速度
【重点句式】
1.What do the pictures have in common?这些图片有什么共同之处?
2.Why do you think electricity is important 为什么你认为电对我们很重要?
3.Then she gave us a special task to try living without electricity for a weekend.
然后她给了我们一个特别的任务,让我们试着过一个没有电的周末。
4.However, it turned out that it was very hard to live without electricity.然而,事实证明,没有电是很难生活的。
5.Instead, we played video games for a while, but then our tablet ran out of battery.
取而代之的是,我们玩了一会儿电子游戏,但后来我们的平板电脑没电了。
6.Since there wasn't any electricity, some things in the fridge quickly went bad.
因为没有电,冰箱里的一些东西很快就坏了。
7. switch off the lights when you leave home当你离开家时,请关掉那些灯.
8.Read the instructions carefully before you use a new electrical appliance.
在你使用一个新的电器之前,请仔细阅读用法说明。
9.More than 2.2 million homes and businesses joined in. 超过220万家庭和企业加入了这一行列。
10.The same amount of electricity could power thousands of computers or television sets for an hour.
同样的电量可以为数千台电脑或电视机供电一小时。
11.It will be even more fun if you ask your friends, family and classmates to join as well.
如果你邀请你的朋友、家人和同学加入,那会更有趣。
12.We need to make sure that the cables are connected correctly before we turn on the device.
在我们打开设备之前,我们需要确保电缆连接正确。
【精讲精练】
要点 1. electricity
electricity, n.电力;电流,静电; 高涨的情绪; 紧张
electrical电的,有关电的,电器科学的;
electric电的,导电的,电动的,其修饰的物体本身是带电的;
electron电子;
electricity ,名词 电
We moved into a cabin with electricity but no running water.
我们搬进了一间有电但是没有自来水的小木屋。
I like that electric fan. 我喜欢那台电风扇。
【典例分析】
1—There are more and more____________(electricity) cars in China now.
—Yes. Because they are environment-friendly.
2.—Which subject does your brother like best in university
—He likes _________________(electricity) engineering best.
3.Don’t leave the lights on during the day. It wastes e______________.(根据首字母用适当单词填空)
4.He studied ________ engineering at university while his brother showed great interest in repairing ________ appliances such as ________ kettles.
A. electric, electric, electrical B. electrical, electrical, electronic
C. electronic, electric, electrical D. electrical, electrical, electric
要点 2. rule
rule 规则。名词。
This is the first rule of winning in any part of life. 这就是在生命任何阶段想要成功的第一规则。
Everyone must obey the rules. 人人都必须遵守规则。
Someone has seen you break the rule. 有人看见你违规了。
obey the rule(s)
break the rule(s)
be against the rule
【典例分析】
1人人都必须遵守规则。(完成句子)
Everyone must ________ ________ ________.
2.有人看见你违规了。(完成句子)
Someone has seen you ________ ________ ___________.
3.I realize that it breaks the rule, so I won’t do that.(选出可以替换画线部分的最佳选项)
A. against B. break C. is against
要点3 try
try to do sth.努力做某事
try doing sth. 试图做某事
try one’s best to do sth. 努力做某事。=try to sth.
【典例分析】
1.Chinese parents always try their best _____ a good education environment for their kids.
A. provide B. to provide C. providing
2.He tries ______music well, so he practices ______music every day.
A. to learn; to sing B. learning; singing C. to learn; singing D. learning; to sing
3.你应该尽力多开口说话。
You must _______ ________ ____, I think your Chinese
4.他坐直了身体,并尝试对人微笑。
He _______ _______ and tried _____ ________people
5.本学期我会尽力学好物理。
I’ll ________ __________ _________ ________ learn physics well this term.
= I’ll ___________ ___________learn physics well this term.
要点 4.while
作连词
引导时间状语从句:表示 “当…… 时候”,强调主句和从句的动作同时发生,从句中的动词必须是延续性动词。例如:
While I was reading, my mother was cooking.
我读书的时候,我妈妈在做饭。
表示对比:意为 “然而”,连接两个并列的句子,对比两个不同的情况或动作。例如:
Tom is tall while his brother is short.汤姆很高,然而他的弟弟很矮。
作名词:意为 “一段时间”“一会儿”,常用于短语 “for a while”一会
儿、“after a while” 过了一会儿,等中。例如:
I waited for him for a while. 我等了他一会儿。
He sat quietly for a moment, and after a while, he began to sing.
【典例分析】
1.Some people like coffee, ______ others prefer tea.
A. as B. because C. while D. so
2.—What were you doing ______ the rainstorm came
— I was waiting for the bus at the bus stop. But ______ I was waiting, I saw a car accident.
A. when; while B. while; when C. when; when D. while; while
3.I was doing my homework ______ my mother was cooking dinner.
A. as B. when C. while D. since
4.The teacher asked us to read the text for a short ______ during class.
A. time B. while C. moment D. period
5. I found a seat in the coffee shop, ordered a cup of latte and read a magazine ______.
A. for a while B. in a while C. after a while D. a while
要点 5. join
join的用法
(1)作为及物动词,意为“参加;加入”。其后常接club【俱乐部】,army【军队】,the Party【党】等词汇,指加入某一组织、团体等并成为其成员、会员。也常用于join sb.in (doing) sth.,意为“与某人一起做某事”。
My elder brother joined the army last year.
我哥哥去年当兵了。
Would you please join us in getting ready for dinner party
能够请你和我们一起为晚宴做准备工作吗?
(2)作为不及物动词,意为“参加”,常用于join in + 活动/游戏等。
May I join in the game with you 我可以和你们一起参加这个游戏吗?
辨析:take part in & join & join in
take part in 意为“参加,参与”,指参加某种活动并在其中起作用。 Have you ever taken part in any English competitions 你曾经参加过英语比赛吗?
join 意为“参加;加入”,指参加党、团组织、军队或人群等并成为其中一员。 My elder brother joined the army last year. 我哥哥去年参军了。
join in 意为“参加”,其后接活动,join in多指参加小规模的活动如“球赛、游戏”等,常用于日常口语. The young man joined in the game at last. 年青人最后也加入到比赛中。
【典例分析】
1. 用take part in、join in和join的适当形式填空。
1) I hope that you’ll ________ the discussion this afternoon.
2.)It is three months since he ______ the football club.
3) All the students ___________ the activity of planting trees last week.
2.-I’m going to Hong Kong next month. What about you, Jenny
-I will _______ social practice.
A. take part in B. take place C. take off D. take action
3.Do you want to Mike’s birthday party
A. go B. come C. join D. take part in
4. I love singing, so I want to ________ the Music Club. What about you
A. join in B. take part in C. give D. join
5.Anyone who sings well can ________ the activity in our school.
A. take part in B. take off C. take out D. take care of
要点 6.
have something in common 有相同的特点/特征
【拓展】①have a lot/much in common有很多共同之处
例:We have a lot in common.(我们有很多共同点。)
②have nothing/little in common 没有共同之处
例:They have nothing in common.(他们毫无共同之处。)
③ common adj. 意为:常见的;普遍的 如:common sense 常识
adj.意为:共有的;公共的 如: a common goal一个共同的目标 common ground共同立场
【典例分析】
1.这对双胞胎有许多共同点。(完成句子)
The twins have _______ _________ _________.
2.Roses are quite _________ flowers in English gardens.
A. common B. different C. unusual
3. I have a lot ________ _________ (共同点) with my pen pal.
要点 7.
run out 用完;耗尽。是不及物动词短语,后面不能直接接宾语。通常以物作主语,表示该物被用完、耗尽。例如
Our food is running out. 我们的食物快用完了。
The time is running out. 时间快用完了。
其同义短语有use up,及物动词短语,有被动语态,如
The water has been used up. 水已经被用完了。
run out of:是及物动词短语,后面需要接宾语,通常是人作主语,表示人用完了某物。
I have run out of ink. 我把墨水用完了。
He ran out of money last week. 他上周把钱用完了。
【典例分析】
1. We must act now because time is ______.
A. running out B. running out of C. run out D. run out of
2.We've ______ eggs, so I have to buy some at the supermarket.
A. run out of B. got out of C. taken out of D. looked out of
要点 8. turn out
turn out 表示“结果是,原来是”,使用如下 :
①turn out+形容词(例The cake turned out delicious.)
②turn out+不定式(例:She turned out to be a doctor.)
③turn out + that从句(例It turned out that they were friends.)
【典例分析】
1. The result______ that the man had nothing to do with this case.
A. turned out B. turned around C. turned to D. turned off
2.It ______ that the man was actually a thief. Thanks to the neighbor’s call, the police caught him in time.
A. turned on B. turned off C. turned out D. turned down
要点9 since的用法
(1)作为连词,还可译为“由于;既然”,引导原因状语从句,表示很明显的原因。
1.The young man hasn’t done much exercise since he got a mobile phone.
年青人自从买手机以来,就不做大量运动了。
2. Since everybody is here, let’s begin the meeting.
既然人都齐了,我们就开会吧。
(2)作为介词,意为“自……以来”,后接时间点作时间状语,常用于现在完成时,可以和“for + 时间段”互换。
I have known him since 10 years ago.自从10年前我就认识他了。
= I have known him for 10 years.我认识他已经有10年了。
(2)作为连词,意为“自……以来”,引导时间状语从句,主句常用现在完成时,从句常用一般过去时。
【典例分析】
1.It’s almost eight years we saw each other last time.
A since B. before C. after D. when
2.—How long have you lived here
—________ about 5 years ________ my family moved to the city.
Since; for B. For; since C. For; for D. Since; since
3. The Smiths have lived in the city of Qingdao since________.
A. ten years B. last summer C. they buy a flat D. five months later
4. ______ you’re tired, you’d better stay at home and have a rest.
A. Since B. Or C. Though D. Till
5. — Why didn’t you go to the party — ______ I wasn’t invited.
A. As B. Since C. Because D. So
要点 10.connect
connect 动词,意为“连接,把……连接起来”。常用于“connect + 名词/代词+ with / to…”表示“把……连起来”。
Connection 连接,联系,关系
Be connected to (with) 联系,关系,连接
The wires in our flat are connected to cables buried under the street.
我们公寓的电线与埋在街道下的电缆连接。
Hong Kong and Shenzhen are connected by Luohu Bridge.
香港和深圳由罗湖桥连接着。
【典例分析】
1.香港和深圳由罗湖桥连接着。(完成句子)
Hong Kong and Shenzhen ________ ___________ by Luohu Bridge.
2这座桥将这个岛和大陆连接了起来。(完成句子)
The bridge _______________ the island __________ the mainland.
3.We need a wireless _____________ (connect)
4.I can't ______ my computer to the Internet. Can you help me
A. connect B. contact C. conduct D. contract
5.You can ______ with people from all over the world through social media.
A. connect B. contact C. combine D. compare
要点 11. as well
as well 意为“也”,常用于肯定句句末。
【拓展】辨析too, also, as well, either
① as well是副词短语,常位于句末,用于肯定句。
他也会说法语。He can speak French as well.
② also是副词,较正式,常位于be 动词、助动词或情态动词之后,行为动词之前,用于肯定句。
她也想去游泳。She also wants to go swimming.
③ too是副词,多用于口语,常位于句末,用于肯定句。
我也是一个初中生。 I’m a junior high school student too.
④ either是副词,位于句末,用于否定句。
他也不喜欢吃鱼。 He doesn’t like eating fish either.
【典例分析】
用too, also, as well或either填空
1. They __________ went to the park last weekend.
2. He didn’t bring his homework to school, __________.
3. She bought some clothes __________.
4. He knows Chinese, and he knows English ___________.
5. If you don’t go, I won’t go ______.
6. Lucy likes English, and Lily likes English   .
A. also B. either C. so D. as well
7. My friend Frank sings well, and he ________does well in playing football.
A. not   B. also   C. as well    D. to
要点 12.power
动词:意为 “驱动;推动,给…动力”。
The engine powers the car. 发动机驱动汽车。
名词:
power n. 能;能量。如:
water power 水力 solar power太阳能
power n.力量、能力或权力
She has the power to influence people.她有影响他人的能力。
He has power over his employees.他对员工有控制权。
【同根词】
(1)powerful adj. 强大的
He is a powerful man. 他是个强人。
(2)powerless adj. 无力量的
I am powerless to stop pollution on my own. 我无力独自阻止污染。
【辨析】power 与 energy
power指力量、功率、电力或权利;energy指精力、能量。
May the Sun bring you new energy. 愿太阳带给你新的能量。
【典例分析】
1.Knowledge is __________. 知识就是力量
2.You have lots of ____________ (power) tools.
3. Wind p_________ is used in many ways now.
4. -Is it true that some colors can make us feel relaxed
-Yes. Colors do have the_______ to change our feelings and moods.
A. secret B. idea C. power D. experience
5. Many countries are increasing their use of natural gas, wind and other forms of ________.
A. power B. force C. energy D. strength
6.The new engine ______ the car to reach a top speed of 200 miles per hour.
A. powers B. forces C. drives D. makes
7.Solar panels are used to ______ the house with electricity.
A. power B. supply C. provide D. equip
要点13 care for/care about
care v.关心;担忧;照顾;喜爱;在乎 n.小心;注意;照料
(1)care for "照顾,照料"=look after=take care of
(2) care for 还可意为“非常喜欢”,通常用于否定句或疑问句中
I don't care for basketball.
(3)care about “关心;在意”
Your father truly cares about you.
Careful 和careless
careful是形容词,可用在系动词后作表语,也可用在名词前作定语。口语中提醒别人要小心时常用be careful,意为"当心;小心"。
Be careful--the floor's slippery.小心地板很滑。
careless adj.“粗心的;不小心的”,反义词为careful
固定搭配
be careful about/of...对.....小心
②be careful to do sth,小心做某事
【典例分析】
1. When Bob had the flu, his mother ________ him day and night.
A. found out B. took up
C. cared for D. took away
2. She doesn't ______ what others think of her. She just does what she likes.
A. care about B. look after C. think about D. talk about
3. He often makes _______________ mistakes, because he doesn’t read _______________.
A. careful; carefully B. careless; careful C. careless; carefully D. careful; carelessly
4.注意你的健康 / 请多保重。
_________________your health.
5.她过分讲究衣着。
She ______________her dress.
6.小心! 那个男人带着一把刀。
___________! The man has a knife.
要点14 until
until意为“直到……”,有下列用法:
(1)作介词,后接时间名词,在句中作时间状语。例如:
She waited there until 9 o’clock. 她在那里一直等到9点钟。
(2)作连词,后接从句,引导时间状语从句。例如:
We waited until the rain stopped. 我们等到雨停了。
【拓展】
(1)until用在肯定句中,多与持续性的动词连用。如stand,wait,stay等,表示主句动作的终止时间。
He stayed there until midnight. 他在那里逗留到深夜。
(2)until可用于否定句中,即not…until…意为“直到……才”,常与非延续性动词连用。如open,start,leave,arrive等,强调主句动作开始的时间。例如:
The child didn’t go to bed until his father came back.
直到父亲回来,那个孩子才睡觉。
【典例分析】
1, 直到我去找老师帮忙,我才解出这道题。
I ___________ _______ the problem _________ I went to my teacher for help.
2. 昨晚,直到爸爸回来我才睡觉。
I ________ ________ to bed ________ my father came back home.
3.昨晚他等我直到雨停下来。
He waited for me ________the rain stopped.
4. —Excuse me, is it my turn now
—Not yet. Please wait on the chair ______ your name is called.
A. and B. until C. although D. since
5. I didn’t finish my homework________ 10:30 last night.
A. until B. after C. though D. if
6. We ______ until he came back.
A. left B. not leave C. waited D. wait
要点 15. against
against是介词,其用法如下:
(1) 反对,违反。对应的反义词为for,常用于be against sb. / sth.反对某人/某事。 例如:
Are most people against having a part-time job 大多数人反对做兼职工作吗?
(2) 和……交战(指竞争、比赛等)。例如:
We’ll have a basketball match against the team from No. 2 Middle School next week.
下星期我们将与二中的球队举行一场篮球赛。
(3) 碰、装、擦。例如:
Rain beats against the window. 雨打在窗户上。
(4) 倚着、靠着。例如:
There was a ladder propped up(支撑) against the wall.一把梯子靠着墙。
(5) 防备,抗……。例如:
She saved money against old age. 她攒钱防老。
(6) 逆着……。例如:
We are sailing against the wind. 我们(的船)正逆风航行。
(7) 衬托,相映,对照。例如:
Red flags stand out brightly against the blue sky.
红旗在蓝天的衬托下显得分外鲜艳。
【典例分析】
1.我们将和来自二班的足球队比赛。
We will ________ ____________ the football team from Class Two.
2.全世界人民都反对战争。
The people around the world _________ _____________ the war.
3. We are all against _____________________ wild animals for food.
A. to kill B. killing C. of killing D. kill
4.—Which team will the French football team play ______
—The South Korean team.
A. for B. on C. against D. at
5. We will ______________ the other strong team in the final match.
A. fight against B. against C. go against D. play against
6. I have a lot of homework to do every day. I can’t play football. Though it’s ________ my own wishes.
A. in B. on C. for D. against
要点 16. Instruction
1. instruction
含义:意为 “指示;说明;教导”。
用法:通常为可数名词,常用复数形式 “instructions” 来表示 “使用说明;操作指南”;也可用作不可数名词,表 “教导;指导”。
例句:
You should follow the instructions on the packet when you take the medicine.
服药时你要依照药盒上的说明来服用。
The students are under the teacher's instruction.学生们正在接受老师的教导。
2. instruct
含义:作动词,有 “指示;命令;教导;指导” 之意。
用法:常见搭配有 “instruct sb. to do sth.”(指示 / 命令某人做某事);“instruct sb. in sth.”在某方面教导某人。
例句:
The boss instructed his secretary to finish the report by the end of the day.
老板指示秘书在当天结束前完成报告。
The professor instructs us in physics.教授教我们物理。
3. instructive
含义:是形容词,指 “有教育意义的;有启发性的”。
用法:常用来修饰事物。
例句:
Watching documentaries can be very instructive.观看纪录片很有教育意义。
The book is full of instructive stories.这本书里有很多有启发性的故事。
4. instructor
含义:为名词,指 “指导者;教师;教练”。
用法:用来指从事教导、指导工作的人。
例句:
The driving instructor taught me how to park the car.驾驶教练教我如何停车。
Our skiing instructor is very patient.我们的滑雪教练很有耐心。
【典例分析】
1.You must read the ______ carefully before you take the medicine.
A. introductions B. instructions C. inventions D. invitations
2.We should follow the ______ on the sign to find the way to the museum.
A. instructions B. descriptions C. introductions D. directions
3. The doctor ______ the patient to take the medicine three times a day.
A. introduced B. instructed C. invited D. interviewed
4.This documentary is very ______. It teaches us a lot about nature.
A. interesting B. interested C. instructive D. instructed
情态动词can,may, must的用法
1. can的用法
(1) 表示能力,一般译为“能;会”,即有某种能力。
(2) 表示许可,常用在口语中,相当于may。如:
(3)表示推测,意为“可能”,常用于否定句和疑问句中,此时can’t译为“不可能”。
(4)could是can的过去式,意为“能;会”,表示过去的能力。
(5) 在表示请求许可时,can,could没有时态区别,只是could在语气上更加委婉客气。
2. may的用法
(1)表示请求、许可。
(2)表示推测,谈论可能性,意为“可能;或许”,一般用于肯定句中。
(3)may的过去式为might,表示推测时两者无时态区别,不过might的可能性低于may
3. must的用法
(1) must意为“必须;一定”
(2)must的否定形式mustn’t意为“一定不要;千万别”或“禁止;不许”。
(3)对must引导的疑问句,肯定回答用must,否定回答用needn’t 或don’t have to。
(4)must可以表示很有把握的推测,意为“一定会;肯定会”,只用于肯定句中。
【典例分析】
一、翻译
1.她会开车,但我不会。
2.我可以用你的手机吗?
3.当他5岁时,就会弹钢琴了。
4.明天可能会下雨。
5.我可以借你的自行车吗?
6.我今天必须把书还给他吗? 是的,必须要还。/不,你不必。
7.他在英语竞赛中获奖了。他的英语一定很好。
二、单项选择
1. —Does the sports watch belong to Mary
—It ________ be hers. She is the only one who wears the sports watch in our class.
A. can’t B. must C. might D. could
2. Oh, come on! ________ you doubt everything I say I’m not a three-year-old!
A. Can’t B. Can C. Mustn’t D. Must
3.If we ________ find a better way, we’ll finish the job faster.
A. can B. can’t C. must D. mustn’t
4. —Excuse me, may I use my phone now
—Sorry, you ________. The plane is taking off.
A. need B. needn’t C. can D. can’t
5. —What do you think we common people ________ do for our motherland during the Covid-19 breakout
—I think we ________ do anything except staying at home and do some exercise to keep ourselves fit.
A. must; can’t B. may; mustn’t C. need; shouldn’t. D. can; needn’t
6.— _______ we clean the classroom at once
— No, you _______. You _______ clean it after school.
A. Must; needn’t; may B. Must; mustn’t; can
C. Shall; can’t; must D. Need; mustn’t; may
7.-Some people don't show their talents at the very beginning.
-I agree. Even Einstein ____________ read until he was seven.
A. can't B. mustn't C. couldn't D. needn't
8.-It's too hot._ ______ I swim in the lake
-No, you____. That's too dangerous!
A. Should; can't B. Need; mustn't C. Must; needn't D. Could; can't
9.-Can we walk across the road now
-No, we________. We have to wait until the light turns green.
A. couldn't B. needn't C. shouldn't D. mustn't
10.-Mom,____I play computer games this evening
-Sure, but you________ finish your homework first.
A. can;must B. can;mustn't C. may;could D. may;can't
【话题分析】
话题分析(一)
  本单元作文以谈论家庭节约用电的规则,将本单元目标语言情态动词的用法应用到文章中。首先我们要像第五单元那样,用思维导图归纳出你的想法,思考家中节约用电的场景,组织语言进行表述。
一、在写作过程中要明确以下几点:
1.学会那些场景用到哪种情态动词。明白must,mustn‘t,can,can’t的用 法。用一般现在时态。
2. 写作时,应紧密结合提示内容,并适当发挥。
3.学会列举提纲。
话题分析(二)
  本单元reading谈论电无处不在,生活离不开电,listening谈论电的一些有趣的事实,talking谈论安全用电的一些知识。Writing 谈论节约用电的方法。学习完这些内容我们可以运用本单元的目标语言写一篇“let’s save electricity ”的文章。可以从这几个方面着手:
1. 以简单直观的句子点明主题,引出电对生活至关重要的观点。
2. 提出问题:然而,人们常浪费电,引出节约用电这一主题。
3.强调节约的重要性。节约用电能减少资源消耗,让这些资源用得更久。
4.给出节约用电建议。
5.发出呼吁:每个人都应行动起来,节约用电,共创美好未来。
【短语积累】
1. 有相同的特征(或特点等)____________________ 2. 电灯泡___________________
3.空调机;空调设备___________________ 4.用完;耗尽___________________
5. 变质 ___________________ 6. 电动汽车 ___________________
7. 电器 ___________________ 8. 关注;担忧___________________
9. 参加;加入 ___________________ 10.结果,证明…… ___________________
11.用手 ___________________ 12.在乡村___________________
13.连接到 ___________________ 14发电 ___________________
15.发电站 ___________________ 16关(电灯、机器等)___________________
【句式积累】
电的重要性和宣传呼吁
1.节约用电意义重大!让我们从小事做起。
2.节约用电有助于保护我们有限的自然资源。
3.事实证明,没有电很难生活
4.由于没有电,冰箱里的一些东西很快就坏了。
5.更糟糕的是,没有电,大多数家务活都变得非常困难。
6. 电能照亮黑暗,为我们的电视和冰箱供电,并在许多方面帮助我们。
7.他们正在努力展现,这小的变化可以对我们的星球产生巨大的影响
浪费用电和安全用电
1.有些人忘记关电视,电视就一直在浪费电。
2.房间里没人时还开着灯是在浪费电
3.切勿用湿手触摸电器。
4.不要使用损坏的电缆/电器。
5.使用新电器前,请仔细阅读说明书。
节约举措
1.离开房间时记得关灯。
2.使用后拔掉充电器插头,避免浪费电。
3.我们可以使用节能灯泡来减少用电量 。
4.尽可能使用自然光。
5.我们可以提醒家人节约用电的重要性。
6.我们应该少用空调。用空调时,将温度设置合适的温度。
【实战演练】
2025年入夏以来,耗电量增大,谁浪费加剧。为了节能环保,深圳呼吁市民养成节约能源的习惯,你是学生会主席,请你根据下面的内容要点,以“let’s save energy”为题,写一篇短文。
要点:1. 能源的重要性;
2. 能源浪费的现象(至少两种);
3. 我们该怎样节约能源(至少两种)。
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Unit 6 Electricity everywhere
单元小结
学习目标:本单元谈论Electricity电。阅读一个关于电的故事,要求学生了解几种发电的形式,号召大家节约用电,能读懂这方面的文章。
语法目标:学习情态动词用法。
听说目标:能听懂平房内关于电的有趣事实的短文,谈论安全用电方法。
写作目标:学会写关于家庭用电规则的短文。
目录
知识要点一、重点单词,短语及句式
要点1 重点短语 练习
要点2 重点句式 练习
【精讲精练】
要点1 electricity/electric的用法 练习
要点2 rule的用法 练习
要点3 try to do/try doing的用法 练习
要点4 while的用法 练习
要点5 join in/take part in/join的用法 练习
要点6 have something in common的用法 练习
要点7 run out/run out of的用法 练习
要点8 turn out的用法 练习
要点9 since的用法 练习
要点10 connect的用法 练习
要点11 too, also, as well, either的用法 练习
要点12 power的用法 练习
要点13 care for/care about的用法 练习
要点14 until/not…until的用法 练习
要点15. against 的用法 练习
要点16 instruction的用法 练习
知识要点二、语法
要点1 情态动词 25
知识要点三、书面表达
要点1 话题分析 27
要点2 词汇短语积累 28
要点3句式积累 28
要点4实战演练 29
【重点短语】
1.have something in common 有相同的特征(或特点等)
2. light bulb 电灯泡
3.air conditioner 空调机;空调设备
4. video game 电子游戏
5.run out of 用完;耗尽
6. go bad 变质
7. electric car 电动汽车
8. electrical appliance 电器
9. care about 关注;担忧
10. climate change 气候变化
11. join in 参加;加入
12.turn out 结果,证明……
13.get dark 变黑,变暗
14. even worse 更糟糕的是
15.by hand 用手
16.go on a bike trip 骑自行车旅行
17.in the countryside 在乡村
18.imagine doing sth. 想象做某事
19.the amount of ……的数量(不可数)
20. at the speed of...以…的速度
【重点句式】
1.What do the pictures have in common?这些图片有什么共同之处?
2.Why do you think electricity is important 为什么你认为电对我们很重要?
3.Then she gave us a special task to try living without electricity for a weekend.
然后她给了我们一个特别的任务,让我们试着过一个没有电的周末。
4.However, it turned out that it was very hard to live without electricity.然而,事实证明,没有电是很难生活的。
5.Instead, we played video games for a while, but then our tablet ran out of battery.
取而代之的是,我们玩了一会儿电子游戏,但后来我们的平板电脑没电了。
6.Since there wasn't any electricity, some things in the fridge quickly went bad.
因为没有电,冰箱里的一些东西很快就坏了。
7. switch off the lights when you leave home当你离开家时,请关掉那些灯.
8.Read the instructions carefully before you use a new electrical appliance.
在你使用一个新的电器之前,请仔细阅读用法说明。
9.More than 2.2 million homes and businesses joined in. 超过220万家庭和企业加入了这一行列。
10.The same amount of electricity could power thousands of computers or television sets for an hour.
同样的电量可以为数千台电脑或电视机供电一小时。
11.It will be even more fun if you ask your friends, family and classmates to join as well.
如果你邀请你的朋友、家人和同学加入,那会更有趣。
12.We need to make sure that the cables are connected correctly before we turn on the device.
在我们打开设备之前,我们需要确保电缆连接正确。
【精讲精练】
要点 1. electricity
electricity, n.电力;电流,静电; 高涨的情绪; 紧张
electrical电的,有关电的,电器科学的;
electric电的,导电的,电动的,其修饰的物体本身是带电的;
electron电子;
electricity ,名词 电
We moved into a cabin with electricity but no running water.
我们搬进了一间有电但是没有自来水的小木屋。
I like that electric fan. 我喜欢那台电风扇。
【典例分析】
1—There are more and more____________(electricity) cars in China now.
—Yes. Because they are environment-friendly.
2.—Which subject does your brother like best in university
—He likes _________________(electricity) engineering best.
3.Don’t leave the lights on during the day. It wastes e______________.(根据首字母用适当单词填空)
【答案】1.electric 2.electric/electrical 3.electricity
4.He studied ________ engineering at university while his brother showed great interest in repairing ________ appliances such as ________ kettles.
A. electric, electric, electrical B. electrical, electrical, electronic
C. electronic, electric, electrical D. electrical, electrical, electric
【答案】D
【详解】句意:他在大学学习电气工程,而他的哥哥对修理电热水壶等电器表现出极大的兴趣。
考查形容词辨析。electric电的,带电的,用电的;electrical电的,与电有关的;electronic电子的。前两个空表示“与电有关的”,因此用electrical;第三个空修饰“kettle”,意为“电壶”,应用electric。故选D。
要点 2. rule
rule 规则。名词。
This is the first rule of winning in any part of life. 这就是在生命任何阶段想要成功的第一规则。
Everyone must obey the rules. 人人都必须遵守规则。
Someone has seen you break the rule. 有人看见你违规了。
obey the rule(s)
break the rule(s)
be against the rule
【典例分析】
1人人都必须遵守规则。(完成句子)
Everyone must ________ ________ ________.
2.有人看见你违规了。(完成句子)
Someone has seen you ________ ________ ___________.
3.I realize that it breaks the rule, so I won’t do that.(选出可以替换画线部分的最佳选项)
A. against B. break C. is against
【答案】1.obey the rule 2.break the rule 3.C be against 反对,违反。
要点3 try
try to do sth.努力做某事
try doing sth. 试图做某事
try one’s best to do sth. 努力做某事。=try to sth.
【典例分析】
1.Chinese parents always try their best _____ a good education environment for their kids.
A. provide B. to provide C. providing
【答案】B
【解析】考查固定搭配try one’s best to do sth. 尽某人最大努力做某事。
3.He tries ______music well, so he practices ______music every day.
A. to learn; to sing B. learning; singing C. to learn; singing D. learning; to sing
【答案】C
【解析】句意“他尽量把音乐学好,所以他每天都练习唱歌”。try to do尽力做,try doing sth尝试做某事。根据so he practices ______ music every day可知,他要尽力把音乐学好,排除B和D。再根据practise doing“练习做某事”可知,故选C。
4.你应该尽力多开口说话。
You must _______ ________ ____, I think your Chinese
【答案】try to speak
5.他坐直了身体,并尝试对人微笑。
He _______ _______ and tried _____ ________people
【答案】sat up smiling at
6.本学期我会尽力学好物理。
I’ll ________ __________ _________ ________ learn physics well this term.
= I’ll ___________ ___________learn physics well this term.
【答案】try my best to/ try to
要点 4.while
作连词
引导时间状语从句:表示 “当…… 时候”,强调主句和从句的动作同时发生,从句中的动词必须是延续性动词。例如:
While I was reading, my mother was cooking.
我读书的时候,我妈妈在做饭。
表示对比:意为 “然而”,连接两个并列的句子,对比两个不同的情况或动作。例如:
Tom is tall while his brother is short.汤姆很高,然而他的弟弟很矮。
作名词:意为 “一段时间”“一会儿”,常用于短语 “for a while”一会
儿、“after a while” 过了一会儿,等中。例如:
I waited for him for a while. 我等了他一会儿。
He sat quietly for a moment, and after a while, he began to sing.
【典例分析】
1.Some people like coffee, ______ others prefer tea.
A. as B. because C. while D. so
【答案】C
【解析】句意为 “一些人喜欢咖啡,而另一些人更喜欢茶” 。while 在此处作连词,表示前后两种情况的对比,意为 “而,然而”。A 项 as 有 “因为;随着;尽管” 等含义;B 项 because 表示原因,意为 “因为”;D 项 so 表示结果,意为 “所以”,这三项均不符合句子对比的逻辑关系。
2.—What were you doing ______ the rainstorm came
— I was waiting for the bus at the bus stop. But ______ I was waiting, I saw a car accident.
A. when; while B. while; when C. when; when D. while; while
【答案】A
【解析:第一句句意为 “暴风雨来的时候你在做什么”,此处 came 为短暂性动词,应用 when 引导时间状语从句;第二句句意为 “但是当我在等车的时候,我目睹了一场车祸”,“waiting” 为延续性动词,强调两个动作同时进行,应用 while 引导时间状语从句。所以答案为 A 。
3.I was doing my homework ______ my mother was cooking dinner.
A. as B. when C. while D. since
【答案】C
【解析】句意为 “我在做作业的时候,妈妈在做晚饭”。while 引导时间状语从句时,强调主从句动作同时进行,且从句中的动词通常为延续性动词。本题中 “做作业” 和 “做晚饭” 两个动作同时进行,且 “cooking” 和 “doing” 均为延续性动作,符合 while 引导时间状语从句的特点。A 项 as 强调两个动作相伴进行;B 项 when 既可以指 “时间点”,也可以指 “时间段”,从句中的动词可以是短暂性动词,也可以是延续性动词;D 项 since 表示 “自从;既然”,均不符合语境。
4.The teacher asked us to read the text for a short ______ during class.
A. time B. while C. moment D. period
【答案】B
【解析】句意为 “老师让我们在课堂上短时间阅读课文”。for a short while 为固定短语,意为 “一会儿,短时间”,符合语境。A 项 time 一般用于 for a short time 短语中,常与持续性动词连用;C 项 moment 常用搭配为 for a moment “片刻,一会儿”;D 项 period 常构成 for a period of...“一段…… 时间”,这三项搭配与题干不符。
5. I found a seat in the coffee shop, ordered a cup of latte and read a magazine ______.
A. for a while B. in a while C. after a while D. a while
【答案】A
【解析】选项 A:“for a while” 表示 “一会儿,一段时间”,在句中作时间状语,表明 “读了一会儿杂志”,符合语境,A 正确。选项 B:“in a while” 意思是 “过一会儿,不久”,强调将来的时间,而句中描述的是过去正在进行的动作,B 不符合语境,错误。 选项 C:“after a while” 意为 “过了一会儿”,通常用于描述过去某个时间点之后发生的事情,与句子整体时态和语境不符,C 错误。
选项 D:“a while” 不能直接用于句尾作时间状语,用法错误,D 错误 。
要点 5. join
join的用法
(1)作为及物动词,意为“参加;加入”。其后常接club【俱乐部】,army【军队】,the Party【党】等词汇,指加入某一组织、团体等并成为其成员、会员。也常用于join sb.in (doing) sth.,意为“与某人一起做某事”。
My elder brother joined the army last year.
我哥哥去年当兵了。
Would you please join us in getting ready for dinner party
能够请你和我们一起为晚宴做准备工作吗?
(2)作为不及物动词,意为“参加”,常用于join in + 活动/游戏等。
May I join in the game with you 我可以和你们一起参加这个游戏吗?
辨析:take part in & join & join in
take part in 意为“参加,参与”,指参加某种活动并在其中起作用。 Have you ever taken part in any English competitions 你曾经参加过英语比赛吗?
join 意为“参加;加入”,指参加党、团组织、军队或人群等并成为其中一员。 My elder brother joined the army last year. 我哥哥去年参军了。
join in 意为“参加”,其后接活动,join in多指参加小规模的活动如“球赛、游戏”等,常用于日常口语. The young man joined in the game at last. 年青人最后也加入到比赛中。
【典例分析】
1. 用take part in、join in和join的适当形式填空。
1) I hope that you’ll ________ the discussion this afternoon.
2.)It is three months since he ______ the football club.
3) All the students ___________ the activity of planting trees last week.
【答案】1)join in多指参加小规模的活动. 2)joined 3)took part in“参加,参与”,指参加某种活动并在其中起作用。
2.-I’m going to Hong Kong next month. What about you, Jenny
-I will _______ social practice.
A. take part in B. take place C. take off D. take action
【答案】A句意:我下个月要去香港。你呢,珍妮?-我要参加社会实践。take place发生 take off脱下 take action 采取措施。
3.Do you want to Mike’s birthday party
A. go B. come C. join D. take part in
【答案】D
【解析】句意:你想要来参加迈克的生日聚会吗?go去,不及物动词;come来,不及物动词;join+组织/团体,加入某种组织或团体,成为其中一员;take part in表示参加某种活动。参加此处的宾语Mike’s birthday party表示一种活动,故用 take part in。故选D。
4. I love singing, so I want to ________ the Music Club. What about you
A. join in B. take part in C. give D. join
【答案】D
【解析】本题考查词语辨析。join 常指加入某人、组织或社团并成为其中一员; join in多指参加小规模的活动,如球赛、游戏等,常用于口语;take part in指参加群众性活动、会议等。
5.Anyone who sings well can ________ the activity in our school.
A. take part in B. take off C. take out D. take care of
【答案】A
【解析】:本题考查动词词组的辨析。 take part in“参加”;take off“起飞”;take out“取出;拿出”;take care of“照顾;照看”。句意为“任何歌唱得好的人都可以参加我们学校的这次活动。”故选A。
要点 6.
have something in common 有相同的特点/特征
【拓展】①have a lot/much in common有很多共同之处
例:We have a lot in common.(我们有很多共同点。)
②have nothing/little in common 没有共同之处
例:They have nothing in common.(他们毫无共同之处。)
③ common adj. 意为:常见的;普遍的 如:common sense 常识
adj.意为:共有的;公共的 如: a common goal一个共同的目标 common ground共同立场
【典例分析】
1.这对双胞胎有许多共同点。(完成句子)
The twins have _______ _________ _________.
2.Roses are quite _________ flowers in English gardens.
A. common B. different C. unusual
3. I have a lot ________ _________ (共同点) with my pen pal.
【答案】1.much in common 2.A common 形容词,普通的。3.in common
要点 7.
run out 用完;耗尽。是不及物动词短语,后面不能直接接宾语。通常以物作主语,表示该物被用完、耗尽。例如
Our food is running out. 我们的食物快用完了。
The time is running out. 时间快用完了。
其同义短语有use up,及物动词短语,有被动语态,如
The water has been used up. 水已经被用完了。
run out of:是及物动词短语,后面需要接宾语,通常是人作主语,表示人用完了某物。
I have run out of ink. 我把墨水用完了。
He ran out of money last week. 他上周把钱用完了。
【典例分析】
1. We must act now because time is ______.
A. running out B. running out of C. run out D. run out of
【答案】A
【解析】题干意思是 “我们现在必须行动,因为时间正在耗尽。”run out of 后面需接宾语,B 项排除。is 后面不能直接接动词原形,C、D 项排除。A 项 running out 构成现在进行时,表示 “时间正在耗尽”,符合语境,所以本题答案是 A。
2.We've ______ eggs, so I have to buy some at the supermarket.
A. run out of B. got out of C. taken out of D. looked out of
【答案】A
【解析】本题句意为 “我们的鸡蛋用光了,所以我得去超市买一些”。A 项 run out of 表示 “用完、耗尽”,符合 “需要去买鸡蛋” 这一语境;B 项 got out of 表示 “从…… 出来;逃避”,如 got out of the car(从车里出来),与鸡蛋用完的语境不符;C 项 taken out of 意为 “从…… 取出”,take out books out of the bag(从包里拿出书),不符合题意;D 项 looked out of 表示 “向…… 外看”,look out of the window(向窗外看),也不符合句子情境,所以正确答案是 A。
要点 8. turn out
turn out 表示“结果是,原来是”,使用如下 :
①turn out+形容词(例The cake turned out delicious.)
②turn out+不定式(例:She turned out to be a doctor.)
③turn out + that从句(例It turned out that they were friends.)
【典例分析】
1. The result______ that the man had nothing to do with this case.
A. turned out B. turned around C. turned to D. turned off
【答案】A
【详解】句意:结果证明那个人与这件事毫无关系。A. turned out证明;B. turned around 转身,C. turned to转向;D. turned off关掉。结合句意可知,答案为A。
2.It ______ that the man was actually a thief. Thanks to the neighbor’s call, the police caught him in time.
A. turned on B. turned off C. turned out D. turned down
【答案】C
【解析】本题句意为 “结果证明那个男人实际上是个小偷。多亏邻居报警,警察及时抓住了他”。A 选项 turned on 意为 “打开(电器等)”,如 turned on the TV(打开电视),与语境不符;B 选项 turned off 表示 “关闭(电器等)”,turned off the light(关灯),不符合句子意思;C 选项 turned out 表示 “结果是,证明是”,符合 “男人被证明是小偷” 这一语境;D 选项 turned down 有 “调低(音量);拒绝” 的意思,turn down the radio(调低收音机音量),不符合句子情境,所以本题正确答案是 C。
要点9 since的用法
(1)作为连词,还可译为“由于;既然”,引导原因状语从句,表示很明显的原因。
1.The young man hasn’t done much exercise since he got a mobile phone.
年青人自从买手机以来,就不做大量运动了。
2. Since everybody is here, let’s begin the meeting.
既然人都齐了,我们就开会吧。
(2)作为介词,意为“自……以来”,后接时间点作时间状语,常用于现在完成时,可以和“for + 时间段”互换。
I have known him since 10 years ago.自从10年前我就认识他了。
= I have known him for 10 years.我认识他已经有10年了。
(2)作为连词,意为“自……以来”,引导时间状语从句,主句常用现在完成时,从句常用一般过去时。
【典例分析】
1.It’s almost eight years we saw each other last time.
A since B. before C. after D. when
【答案】A
【解析】句意:自从我们上次见面以来已经快八年了。
考查连词辨析。A. since自从……以来;B. before在……之前;C. after在……之后;D. when当……时候。本句为固定用法,即It’is +一段时间 +since +一般过去时态的句子。故选A。
2.—How long have you lived here
—________ about 5 years ________ my family moved to the city.
Since; for B. For; since C. For; for D. Since; since
【答案】B
【解析】句意:——你住在这里有多长时间了?——自从我家搬到这座城市有五年了。
考查介词、连词辨析。since自从,可以作介词或者连词,引导时间状语从句;for介词,后面可跟一段时间。作连词时可以引导原因状语从句。第一个空后about 5 years是名词短语,表示一段时间,故用介词For;第二个空后是一个从句,表示时间,应用since引导。故选B。
3. The Smiths have lived in the city of Qingdao since________.
A. ten years B. last summer C. they buy a flat D. five months later
【答案】B
【解析】考查since的用法。since作介词时, 后跟时间点作时间状语; 作连词时, 连接时间状语从句, 从句一般用过去式。句意: 史密斯一家人自去年夏天就住在青岛。故选B。
4. ______ you’re tired, you’d better stay at home and have a rest.
A. Since B. Or C. Though D. Till
【答案】A
【解析】句意:既然你累了,你最好呆在家里休息一下。since ,从句表示明显的或已为人所知的理由,常译为“因为;既然”
5. — Why didn’t you go to the party — ______ I wasn’t invited.
A. As B. Since C. Because D. So
【答案】C
【解析】回答why的句子只能用because。because 表示直接原因,着重点在从句,它所指的原因通常是听话人所不知道的,语气最强。常用来回答why 的提问.这里就不能用since和as
要点 10.connect
connect 动词,意为“连接,把……连接起来”。常用于“connect + 名词/代词+ with / to…”表示“把……连起来”。
Connection 连接,联系,关系
Be connected to (with) 联系,关系,连接
The wires in our flat are connected to cables buried under the street.
我们公寓的电线与埋在街道下的电缆连接。
Hong Kong and Shenzhen are connected by Luohu Bridge.
香港和深圳由罗湖桥连接着。
【典例分析】
1.香港和深圳由罗湖桥连接着。(完成句子)
Hong Kong and Shenzhen ________ ___________ by Luohu Bridge.
2这座桥将这个岛和大陆连接了起来。(完成句子)
The bridge _______________ the island __________ the mainland.
3.We need a wireless _____________ (connect)
【答案】1.are connected 2.connects to 3.connection
4.I can't ______ my computer to the Internet. Can you help me
A. connect B. contact C. conduct D. contract
【答案】A
【解析】句意为 “我无法把我的电脑连接到网络,你能帮我吗”。A 选项 “connect” 有 “连接” 的意思,“connect...to...” 是固定搭配,表示 “把…… 连接到……”,符合语境;B 选项 “contact” 意为 “联系”;C 选项 “conduct” 有 “实施、进行” 等含义;D 选项 “contract” 作动词时意为 “收缩;订立合同”,均不符合此处把电脑和网络连接的意思,所以选 A。
5.You can ______ with people from all over the world through social media.
A. connect B. contact C. combine D. compare
【答案】A
【解析】本句意思是 “你可以通过社交媒体和来自世界各地的人建立联系”。A 选项 “connect with” 有 “与…… 建立联系、交往” 的意思,符合通过社交媒体和世界各地人交流的语境;B 选项 “contact” 作 “联系” 讲时,一般是 “contact sb.”,而不是 “contact with sb.”;C 选项 “combine” 意为 “结合、联合”;D 选项 “compare” 意为 “比较”,均不符合此处表达和人建立联系的意思,所以选 A。
要点 11. as well
as well 意为“也”,常用于肯定句句末。
【拓展】辨析too, also, as well, either
① as well是副词短语,常位于句末,用于肯定句。
他也会说法语。He can speak French as well.
② also是副词,较正式,常位于be 动词、助动词或情态动词之后,行为动词之前,用于肯定句。
她也想去游泳。She also wants to go swimming.
③ too是副词,多用于口语,常位于句末,用于肯定句。
我也是一个初中生。 I’m a junior high school student too.
④ either是副词,位于句末,用于否定句。
他也不喜欢吃鱼。 He doesn’t like eating fish either.
【典例分析】
用too, also, as well或either填空
1. They __________ went to the park last weekend.
2. He didn’t bring his homework to school, __________.
3. She bought some clothes __________.
4. He knows Chinese, and he knows English ___________.
5. If you don’t go, I won’t go ______.
【答案】1.also 常用在句中,be动词之后行为动词之前。
2.either 用于否定句中,句末。
3.as well用于肯定句句末。不用逗号。
4.too /as well 用在句末。肯定句中
5. either 也否定句中。
6. Lucy likes English, and Lily likes English   .
A. also B. either C. so D. as well
【答案】D考查词义辨析。also意为“也”, 用于句中; either意为“也”, 用于否定句句末; so意为“所以”, 表示结果; as well意为“也”, 用于肯定句句末。故选D。
7. My friend Frank sings well, and he ________does well in playing football.
A. not   B. also   C. as well    D. to
【答案】B
【解析】考查副词also。also表示“也”,经常用在句中,as well虽然也表示“也”,但经常用于句末。
要点 12.power
动词:意为 “驱动;推动,给…动力”。
The engine powers the car. 发动机驱动汽车。
名词:
power n. 能;能量。如:
water power 水力 solar power太阳能
power n.力量、能力或权力
She has the power to influence people.她有影响他人的能力。
He has power over his employees.他对员工有控制权。
【同根词】
(1)powerful adj. 强大的
He is a powerful man. 他是个强人。
(2)powerless adj. 无力量的
I am powerless to stop pollution on my own. 我无力独自阻止污染。
【辨析】power 与 energy
power指力量、功率、电力或权利;energy指精力、能量。
May the Sun bring you new energy. 愿太阳带给你新的能量。
【典例分析】
1.Knowledge is __________. 知识就是力量
2.You have lots of ____________ (power) tools.
【解析】power “力量”。名词。 1.powerful “强大的,有力量的”。形容词。
3. Wind p_________ is used in many ways now.
【答案】power
【解析】句意:风力发电现在有很多用途。
4. -Is it true that some colors can make us feel relaxed
-Yes. Colors do have the_______ to change our feelings and moods.
A. secret B. idea C. power D. experience
【答案】C
【解析】句意:——一些颜色真的能让我们感到轻松吗?——是的,颜色确实有能力改变我们的感觉和情绪。A. secret秘密;B. idea主意;C. power力量;D. experience经历,体验。这里是说有权利。根据题意,故选C。
5. Many countries are increasing their use of natural gas, wind and other forms of ________.
A. power B. force C. energy D. strength
【答案】C
【解析】句意:许多国家正在增加对天然气、风能和其他形式能源的使用。
考查名词辨析。power权力;force力量;energy能源;strength力量。根据“natural gas, wind”可知,这些都属于能源,故选C。
6.The new engine ______ the car to reach a top speed of 200 miles per hour.
A. powers B. forces C. drives D. makes
【答案】A
【解析】A 选项:“powers” 在这里是 “为…… 提供动力” 的意思,符合句子中发动机为汽车提供动力使其达到最高时速的语境。B 选项:“forces” 意为 “强迫;迫使”,通常用于人或某种力量迫使某人做某事,与发动机为汽车提供动力的意思不符。C 选项:“drives” 有 “驾驶;驱动” 的意思,但 “drive” 强调的是操作或推动某物前进,而不是像 “power” 那样明确地表示提供动力。
D 选项:“makes” 使役动词,“make sb. /sth. do sth.” 表示 “使某人 / 某物做某事”,但它没有 “提供动力” 的意思,不能准确表达发动机对汽车的作用。
7.Solar panels are used to ______ the house with electricity.
A. power B. supply C. provide D. equip
【答案】A
【解析】A 选项:“power” 作动词时,有 “给…… 供电” 的意思,“power the house with electricity” 表示 “给房子供电”,符合太阳能电池板功能的描述。B 选项:“supply” 通常与 “with” 搭配,“supply sb. /sth. with sth.” 表示 “向某人 / 某物提供某物”,更强调提供物品或资源,而 “power” 更侧重于提供电力这种能量。C 选项:“provide” 也有 “提供” 的意思,“provide sb. /sth. with sth.” 与 “supply” 用法类似,但同样没有 “power” 那种专门针对电力供应的含义。
D 选项:“equip” 意为 “装备;配备”,“equip the house with...” 通常指给房子配备某种设备或设施,与太阳能电池板给房子供电的语境不符。
要点13 care for/care about
care v.关心;担忧;照顾;喜爱;在乎 n.小心;注意;照料
(1)care for "照顾,照料"=look after=take care of
(2) care for 还可意为“非常喜欢”,通常用于否定句或疑问句中
I don't care for basketball.
(3)care about “关心;在意”
Your father truly cares about you.
Careful 和careless
careful是形容词,可用在系动词后作表语,也可用在名词前作定语。口语中提醒别人要小心时常用be careful,意为"当心;小心"。
Be careful--the floor's slippery.小心地板很滑。
careless adj.“粗心的;不小心的”,反义词为careful
固定搭配
be careful about/of...对.....小心
②be careful to do sth,小心做某事
【典例分析】
1. When Bob had the flu, his mother ________ him day and night.
A. found out B. took up
C. cared for D. took away
【答案】C
【解析】句意:鲍勃患流感时,母亲日夜照顾他。
考查动词短语。found out找出;took up拿起;cared for照料;took away拿走。根据“Bob had the flu”可知,鲍勃生病了,需要的是照顾,可知A、B、D三项意思都与句意不合,故选C。
2. She doesn't ______ what others think of her. She just does what she likes.
A. care about B. look after C. think about D. talk about
【答案】A
【解析】本题句意为 “她不在乎别人怎么看她。她只做自己喜欢的事”。A 选项 care about 表示 “在乎,关心”,符合句子中她不把别人看法放在心上的语境;B 选项 look after 意为 “照顾”,如 look after the children(照顾孩子们),与语境不符;C 选项 think about 表示 “考虑”,强调思考某事,和不在乎别人看法的意思不相关;D 选项 talk about 表示 “谈论”,也不符合句子表达的含义,所以本题选 A。
3. He often makes _______________ mistakes, because he doesn’t read _______________.
A. careful; carefully B. careless; careful C. careless; carefully D. careful; carelessly
【答案】C
【解析】考查形容词和副词的句法功能。句意:他经常犯粗心的错误,因为他不认真阅读。read意为:读,行为动词,需用副词修饰,排除B;根据语境可知,他因为没有仔细阅读导致经常犯粗心的错误,形容词careless修饰名词mistakes。故选C。
4.注意你的健康 / 请多保重。
_________________your health.
【答案】Be careful of
5.她过分讲究衣着。
She ______________her dress.
【答案】is too careful about
6.小心! 那个男人带着一把刀。
___________! The man has a knife.
【答案】Be carful/ Look out/ Watch out
要点14 until
until意为“直到……”,有下列用法:
(1)作介词,后接时间名词,在句中作时间状语。例如:
She waited there until 9 o’clock. 她在那里一直等到9点钟。
(2)作连词,后接从句,引导时间状语从句。例如:
We waited until the rain stopped. 我们等到雨停了。
【拓展】
(1)until用在肯定句中,多与持续性的动词连用。如stand,wait,stay等,表示主句动作的终止时间。
He stayed there until midnight. 他在那里逗留到深夜。
(2)until可用于否定句中,即not…until…意为“直到……才”,常与非延续性动词连用。如open,start,leave,arrive等,强调主句动作开始的时间。例如:
The child didn’t go to bed until his father came back.
直到父亲回来,那个孩子才睡觉。
【典例分析】
1, 直到我去找老师帮忙,我才解出这道题。
I ___________ _______ the problem _________ I went to my teacher for help.
【答案】didn’t solve until
2. 昨晚,直到爸爸回来我才睡觉。
I ________ ________ to bed ________ my father came back home.
【答案】didn’t go until
3.昨晚他等我直到雨停下来。
He waited for me ________the rain stopped.
【答案】until
4. —Excuse me, is it my turn now
—Not yet. Please wait on the chair ______ your name is called.
A. and B. until C. although D. since
【答案】B。
【解析】考查连词的用法。句意:“请问,现在轮到我了吗?”“还没有。请在椅子上等着,直到叫你的名字。”and意为“和”;until意为“直到……”;until 直到,肯定句主句谓语动词一定要有延续性。Wait是延续的的动词。although意为“虽然”;since意为“自从”。根据句意可知答案为B。
5. I didn’t finish my homework________ 10:30 last night.
A. until B. after C. though D. if
【答案】A
【解析】句意:昨晚直到10:30我才完成家庭作业。本题考查连词。A. until直到 B. after在…后 C. though 尽管D. if假如,not...until...表示“直到……才……”,符合语义,故选A。
6. We ______ until he came back.
A. left B. not leave C. waited D. wait
【答案】 C
【解析】.until 直到,用于否定句中表示“直到。。。才”主句谓语动词可用非延续性动词。B否定形式错误,要用didn’t leave。
要点 15. against
against是介词,其用法如下:
(1) 反对,违反。对应的反义词为for,常用于be against sb. / sth.反对某人/某事。 例如:
Are most people against having a part-time job 大多数人反对做兼职工作吗?
(2) 和……交战(指竞争、比赛等)。例如:
We’ll have a basketball match against the team from No. 2 Middle School next week.
下星期我们将与二中的球队举行一场篮球赛。
(3) 碰、装、擦。例如:
Rain beats against the window. 雨打在窗户上。
(4) 倚着、靠着。例如:
There was a ladder propped up(支撑) against the wall.一把梯子靠着墙。
(5) 防备,抗……。例如:
She saved money against old age. 她攒钱防老。
(6) 逆着……。例如:
We are sailing against the wind. 我们(的船)正逆风航行。
(7) 衬托,相映,对照。例如:
Red flags stand out brightly against the blue sky.
红旗在蓝天的衬托下显得分外鲜艳。
【典例分析】
1.我们将和来自二班的足球队比赛。
We will ________ ____________ the football team from Class Two.
【答案】play against
2.全世界人民都反对战争。
The people around the world _________ _____________ the war.
【答案】fight against
3. We are all against _____________________ wild animals for food.
A. to kill B. killing C. of killing D. kill
【答案】 B
【解析】句意:我们都反对猎杀野生动物来获取食物。考查非谓语动词形式的搭配。根据句中的are against,against为副词性质,其后通常连接名词性质的词形“名词、代词或动名词doing”。故选B。
4.—Which team will the French football team play ______
—The South Korean team.
A. for B. on C. against D. at
【答案】C。
【解析】考查固定搭配。句意: ——法国足球队和哪支球队对抗 ——韩国队。play against意为“与……对抗”。
5. We will ______________ the other strong team in the final match.
A. fight against B. against C. go against D. play against
【答案】D
【解析】句意:我们将要在决赛中对阵另一个强队。考查against短语搭配辨析。根据句尾的in the final match可知是比赛中的对抗。故选D。
6. I have a lot of homework to do every day. I can’t play football. Though it’s ________ my own wishes.
A. in B. on C. for D. against
【答案】D
【解析】句意:我每天都有很多作业要做。我不能踢足球。虽然这违背了我的意愿。
考查介词辨析。in在……里面;on在……上面;for为了;against违背。根据“Though”可知,前后是让步关系,指前文的“每天要做很多作业,不能踢足球违背了我的意愿”。故选D。
要点 16. Instruction
1. instruction
含义:意为 “指示;说明;教导”。
用法:通常为可数名词,常用复数形式 “instructions” 来表示 “使用说明;操作指南”;也可用作不可数名词,表 “教导;指导”。
例句:
You should follow the instructions on the packet when you take the medicine.
服药时你要依照药盒上的说明来服用。
The students are under the teacher's instruction.学生们正在接受老师的教导。
2. instruct
含义:作动词,有 “指示;命令;教导;指导” 之意。
用法:常见搭配有 “instruct sb. to do sth.”(指示 / 命令某人做某事);“instruct sb. in sth.”在某方面教导某人。
例句:
The boss instructed his secretary to finish the report by the end of the day.
老板指示秘书在当天结束前完成报告。
The professor instructs us in physics.教授教我们物理。
3. instructive
含义:是形容词,指 “有教育意义的;有启发性的”。
用法:常用来修饰事物。
例句:
Watching documentaries can be very instructive.观看纪录片很有教育意义。
The book is full of instructive stories.这本书里有很多有启发性的故事。
4. instructor
含义:为名词,指 “指导者;教师;教练”。
用法:用来指从事教导、指导工作的人。
例句:
The driving instructor taught me how to park the car.驾驶教练教我如何停车。
Our skiing instructor is very patient.我们的滑雪教练很有耐心。
【典例分析】
1.You must read the ______ carefully before you take the medicine.
A. introductions B. instructions C. inventions D. invitations
【答案】B
【解析】A 选项 “introductions” 意为 “介绍”;
B 选项 “instructions” 有 “使用说明” 的意思,“read the instructions” 表示 “阅读说明”,符合 “吃药前要仔细阅读药品说明” 这一语境;C 选项 “inventions” 是 “发明” 的意思;D 选项 “invitations” 指 “邀请”。所以选 B。
2.We should follow the ______ on the sign to find the way to the museum.
A. instructions B. descriptions C. introductions D. directions
【答案】A
【解析】A 选项 “instructions” 有 “指示;说明” 的意思,“follow the instructions” 表示 “遵循指示”,这里指按照标志上的指示找到去博物馆的路,符合语境。
B 选项 “descriptions” 意为 “描述”,标志上一般不是描述性内容,而是指示性的,所以不符合。
C 选项 “introductions” 是 “介绍”,标志的主要作用不是介绍,而是给予指引,该选项不合适。
D 选项 “directions” 侧重于 “方向”,虽然和找路有关,但 “instructions” 更强调按照标志上的具体说明去做,相比之下 A 更合适。
3. The doctor ______ the patient to take the medicine three times a day.
A. introduced B. instructed C. invited D. interviewed
【答案】B
【解析】A 选项 “introduced” 是 “介绍”;B 选项 “instructed” 是 “instruct” 的过去式,“instruct sb. to do sth.” 表示 “指示 / 命令某人做某事”,医生指示病人一天吃三次药,符合语境;C 选项 “invited” 是 “邀请”;D 选项 “interviewed” 是 “采访;面试”。所以选 B。
4.This documentary is very ______. It teaches us a lot about nature.
A. interesting B. interested C. instructive D. instructed
【答案】C
【解析】A 选项 “interesting” 表示 “有趣的”,强调事物本身具有能引起人兴趣的特质;
B 选项 “interested” 常用来形容人 “感兴趣的”;C 选项 “instructive” 意为 “有教育意义的”,根据后面说 “它教给我们很多关于自然的知识”,可知这部纪录片是有教育意义的,符合语境;D 选项 “instructed” 是 “instruct” 的过去式和过去分词形式,不能作表语描述纪录片的特征。所以选 C。
情态动词can,may, must的用法
1. can的用法
(1) 表示能力,一般译为“能;会”,即有某种能力。
(2) 表示许可,常用在口语中,相当于may。如:
(3)表示推测,意为“可能”,常用于否定句和疑问句中,此时can’t译为“不可能”。
(4)could是can的过去式,意为“能;会”,表示过去的能力。
(5) 在表示请求许可时,can,could没有时态区别,只是could在语气上更加委婉客气。
2. may的用法
(1)表示请求、许可。
(2)表示推测,谈论可能性,意为“可能;或许”,一般用于肯定句中。
(3)may的过去式为might,表示推测时两者无时态区别,不过might的可能性低于may
3. must的用法
(1) must意为“必须;一定”
(2)must的否定形式mustn’t意为“一定不要;千万别”或“禁止;不许”。
(3)对must引导的疑问句,肯定回答用must,否定回答用needn’t 或don’t have to。
(4)must可以表示很有把握的推测,意为“一定会;肯定会”,只用于肯定句中。
【典例分析】
一、翻译
1.她会开车,但我不会。
【答案】She can drive, but I can’t.
【解析】表示能力。“能,会”
2.我可以用你的手机吗?
【答案】Can /may I use your mobile phone
【解析】用疑问句中表示“许可”“可以”
3.当他5岁时,就会弹钢琴了。
【答案】He could play the piano when he was 5.
【解析】can 过去式could。
4.明天可能会下雨。
【答案】It may rain tomorrow.
【解析】may表示推测,谈论可能性。
5.我可以借你的自行车吗?
【答案】May /can I borrow your bike
【解析】表示推测,谈论可能性。
6.我今天必须把书还给他吗? 是的,必须要还。/不,你不必。
【答案】Must I return the book to him today —Yes, you must./No, you needn’t(don’t have to).
【解析】must意为“必须;一定”,肯定回答用must,否定回答用needn’t 或don’t have to。
7.他在英语竞赛中获奖了。他的英语一定很好。
【答案】He won the prize in the English competition. His English must be very good.
【解析】must可以表示很有把握的推测,意为“一定会;肯定会”,只用于肯定句中。
二、单项选择
1. —Does the sports watch belong to Mary
—It ________ be hers. She is the only one who wears the sports watch in our class.
A. can’t B. must C. might D. could
【答案】B
【解析】句意:——这块运动手表是玛丽的吗?——一定是她的。她是我们班唯一戴运动表的人。
考查情态动词。can’t不可能;must一定;might可能;could能够。根据“She is the only one who wears the sports watch in our class.”可知玛丽是班里唯一戴运动表的人,所以这块运动手表一定是玛丽的,表达有把握的肯定推测用must。故选B。
2. Oh, come on! ________ you doubt everything I say I’m not a three-year-old!
A. Can’t B. Can C. Mustn’t D. Must
【答案】D
【解析】句意:哦,别这样!你非得要怀疑我所说的一切吗?我不是三岁小孩!
考查情态动词的用法。Can’t不能;Can能;Mustn’t禁止;Must偏要,非得。根据“...you doubt everything I say I’m not a three-year-old!”可知,此处是抱怨的语气,“你非得要怀疑我所说的一切吗”,用must表示“偏要、非得”。故选D。
3.If we ________ find a better way, we’ll finish the job faster.
A. can B. can’t C. must D. mustn’t
【答案】A
【解析】句意:如果我们能找到更好的方法,我们就能更快地完成这项工作。
考查情态动词。can能;can’t不能;must必须;mustn’t禁止。根据“ ...find a better way, we’ll finish the job faster”可知,此处指要是能找到更好的方法,就能更快地完成工作,故选A。
4. —Excuse me, may I use my phone now
—Sorry, you ________. The plane is taking off.
A. need B. needn’t C. can D. can’t
【答案】D
【解析】句意:——对不起,我现在可以用电话吗?——对不起,你不能。飞机马上要起飞了。
考查情态动词。need需要;needn’t没必要;can可以;can’t不能。根据“The plane is taking off.”可知此处是作否定回答。can’t“不能”符合语境。故选D。
5. —What do you think we common people ________ do for our motherland during the Covid-19 breakout —I think we ________ do anything except staying at home and do some exercise to keep ourselves fit.
A. must; can’t B. may; mustn’t C. need; shouldn’t. D. can; needn’t
【答案】D
【解析】 句意:——在新冠肺炎疫情期间,您认为我们老百姓能为祖国做些什么?——我认为我们不需要做任何事情,除了待在家里和做一些锻炼来保持健康。 考查情态动词辨析。must必须;can’t不能够;may可能;mustn’t禁止;need必须;shouldn’t不应该;can能够;needn’t不必。根据“What do you think we common people … do for our motherland during the Covid-19 breakout”可知,此处询问能做些什么;根据“I think we … do anything except staying at home and do some exercise to keep ourselves fit”可知,不需要其他的事情,只能待在家里和做锻炼,故选D。
6.— _______ we clean the classroom at once
— No, you _______. You _______ clean it after school.
A. Must; needn’t; may B. Must; mustn’t; can
C. Shall; can’t; must D. Need; mustn’t; may
【答案】A
【解析】情态动词的用法。根据前后句意可推断对方在询问“我必须马上打扫教室吗?”。而must引导的一般疑问句否定回答用needn’t。故选A。
7.-Some people don't show their talents at the very beginning.
-I agree. Even Einstein ____________ read until he was seven.
A. can't B. mustn't C. couldn't D. needn't
【答案】C
【解析】句意:——有些人在一开始并没有展示他们的才能。——我同意。爱因斯坦甚至直到七岁才识字。考查情态动词辨析。can't 不能,表示没有能力,couldn't是其过去式;mustn't不能,表禁止;needn't不需要,指没有必要。根据Some people don't show their talents at the very beginning.可知七岁前几乎没有能力读书,根据until he was seven可知用一般过去时,故选C。
8.-It's too hot._ ______ I swim in the lake
-No, you____. That's too dangerous!
A. Should; can't B. Need; mustn't C. Must; needn't D. Could; can't
【答案】D
【解析】考查情态动词的辨析。should表示“应该,应当”;must表示“必须”;need意为“需要”;mustn’t表示“禁止,不允许”;needn't意为“不需要”,一般用来回答以must开头的一般疑问句;could表示“能,可以”,语气更委婉;can't表示“不能”。由句意“——太热了,我能在湖里游泳吗?——不,你不能。那太危险了!”可知,第一空用could向对方提出请求;第二空表示拒绝,故选D
9.-Can we walk across the road now
-No, we________. We have to wait until the light turns green.
A. couldn't B. needn't C. shouldn't D. mustn't
【答案】D
【解析】考查情态动词。句意:——现在我们可以过马路吗?——不,不允许。我们必须等到交通灯变绿。Couldn’t不可以;needn't没必要;shouldn't不应该;mustn't禁止,不允许。结合语境“Can we...?”和下文“我们必须等到交通灯变绿”可知答案。故选D
10.-Mom,____I play computer games this evening
-Sure, but you________ finish your homework first.
A. can;must B. can;mustn't C. may;could D. may;can't
【答案】A
【解析】考查情态动词辨析。句意:——妈妈,今天晚上我能玩电脑游戏吗?——当然,但是你必须先完成你的家庭作业。根据Sure,可知是回答请求,结合but 可知“必须要先完成作业”。故选A。
【话题分析】
话题分析(一)
  本单元作文以谈论家庭节约用电的规则,将本单元目标语言情态动词的用法应用到文章中。首先我们要像第五单元那样,用思维导图归纳出你的想法,思考家中节约用电的场景,组织语言进行表述。
一、在写作过程中要明确以下几点:
1.学会那些场景用到哪种情态动词。明白must,mustn‘t,can,can’t的用 法。用一般现在时态。
2. 写作时,应紧密结合提示内容,并适当发挥。
3.学会列举提纲。
话题分析(二)
  本单元reading谈论电无处不在,生活离不开电,listening谈论电的一些有趣的事实,talking谈论安全用电的一些知识。Writing 谈论节约用电的方法。学习完这些内容我们可以运用本单元的目标语言写一篇“let’s save electricity ”的文章。可以从这几个方面着手:
1. 以简单直观的句子点明主题,引出电对生活至关重要的观点。
2. 提出问题:然而,人们常浪费电,引出节约用电这一主题。
3.强调节约的重要性。节约用电能减少资源消耗,让这些资源用得更久。
4.给出节约用电建议。
5.发出呼吁:每个人都应行动起来,节约用电,共创美好未来。
【短语积累】
1. 有相同的特征(或特点等)____________________ 2. 电灯泡___________________
3.空调机;空调设备___________________ 4.用完;耗尽___________________
5. 变质 ___________________ 6. 电动汽车 ___________________
7. 电器 ___________________ 8. 关注;担忧___________________
9. 参加;加入 ___________________ 10.结果,证明…… ___________________
11.用手 ___________________ 12.在乡村___________________
13.连接到 ___________________ 14发电 ___________________
15.发电站 ___________________ 16关(电灯、机器等)___________________
【答案】1.have something in common 2. light bulb 3.air conditioner 4.run out of 5. go bad 6. electric car 7. electrical appliance 8. care about 9. join in 10.turn out 11.by hand 12.in the countryside 13.be connected to 14.produce electricity 15.power station 16.turn(switch) off
【句式积累】
电的重要性和宣传呼吁
1.节约用电意义重大!让我们从小事做起。
Saving electricity matters! Let’s start from small actions.
2.节约用电有助于保护我们有限的自然资源。
Saving electricity helps to protect our limited natural resources.
3.事实证明,没有电很难生活
It turned out that it was very hard to live without electricity
4.由于没有电,冰箱里的一些东西很快就坏了。
Since there wasn't any electricity, some things in the fridge quickly went bad.
5.更糟糕的是,没有电,大多数家务活都变得非常困难。
Even worse, most household tasks became very difficult without electricity.
6. 电能照亮黑暗,为我们的电视和冰箱供电,并在许多方面帮助我们。
Electricity lights up the dark, powers our TVs and fridges, and helps us in many ways.
7.他们正在努力展现,这小的变化可以对我们的星球产生巨大的影响
They are trying to show that small changes can make a great difference to our planet
浪费用电和安全用电
1.有些人忘记关电视,电视就一直在浪费电。
Some people forget to turn off the TV and lights, and it keeps wasting electricity.
2.房间里没人时还开着灯是在浪费电
Leaving the lights on when no one is in the room is a waste of electricity.
3.切勿用湿手触摸电器。
Never touch electrical appliances with wet hands.
4.不要使用损坏的电缆/电器。
Do not use broken cables / electrical appliances.
5.使用新电器前,请仔细阅读说明书。
Read the instructions carefully before you use a new electrical appliance.
节约举措
1.离开房间时记得关灯。
Remember to turn off lights when you leave a room.
2.使用后拔掉充电器插头,避免浪费电。
Unplug chargers after using them to avoid wasting electricity.
3.我们可以使用节能灯泡来减少用电量 。
We can use energy - saving bulbs to reduce electricity use.
4.尽可能使用自然光。
Use natural light whenever possible.
5.我们可以提醒家人节约用电的重要性。
We can remind family members of the importance of saving electricity.
6.我们应该少用空调。用空调时,将温度设置合适的温度。
We should use the air-conditioner less often. When using air conditioning, set the temperature properly.
【实战演练】
2025年入夏以来,耗电量增大,谁浪费加剧。为了节能环保,深圳呼吁市民养成节约能源的习惯,你是学生会主席,请你根据下面的内容要点,以“let’s save energy”为题,写一篇短文。
要点:1. 能源的重要性;
2. 能源浪费的现象(至少两种);
3. 我们该怎样节约能源(至少两种)。
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Electricity plays a huge part in our lives. It lights up the dark, powers our TVs and fridges, and helps us in many ways. However, many people pay little attention to saving it. Some forget to turn off lights when leaving a room, and others keep electrical appliances on standby for hours.
Saving electricity matters. It helps reduce the use of limited resources, allowing them to last longer. To save electricity, there are many things we can do. At home, we should use energy - efficient appliances and LED lights. Remember to turn off all devices when they aren't in use. Also, use natural light whenever possible. When out, don't leave chargers plugged in at public charging stations.
Let’s all start saving electricity right away. Our small actions can make a big difference and create a better future!
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