Unit 2 How often do you exercise？Section B 单词讲解课件+内嵌音频

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Unit2 How often do you exercise
Section B 单词讲解
21教育独家版权
[d k] n.垃圾；无用的东西
Junk food is unhealthy .
垃圾食品是不健康的.
例句
讲解
junk为不可数名词
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n.垃圾食品
You shouldn't eat too much junk food.
你不应该吃太多的垃圾食品。
例句
['k fi] n.咖啡；咖啡色
Would you like tea or coffee
你喝茶还是喝咖啡？
例句
讲解
coffee为不可数名词
a cup of coffe 一杯咖啡
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[helθ] n.健康；人的身体（或精神）状态
be in good health=keep in good health
=stay in good health 保持健康
=keep healthy=stay healthy
短语
例句
Health is better than wealth. 健康胜于财富。
His mother is in bad health. 他妈妈身体不好。
拓展
它是“名词health+y”构成的。
类似的形容词还有windy, cloudy等等。
health
形容词
healthy
反义词
unhealthy
[r 'z lt] n.结果；后果
短语
result of 是…结果；由于…结果
as a result 结果；因此
result为可数名词， 结果；成绩；答案；比赛结果
Nobody believes the results.
讲解
What’s the result of the competition between Class 4 and Class 7
As a result, the water became very dirty. 结果水变得很脏。
[p 'sent] n.百分之……
①. percent = percent （单复同形） 1percent; 15 percent
②. 请观察谓语动词：
45 percent of the boys were surprised at the news.
80 percent of the ocean was polluted.
Nearly 1.69 percent of the water comes from underground.
这类句子的单复数取决于of后面名词的单复数。
讲解
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[ n'la n] adj. adv.
在线的；联网的
use the Internet＝ go online上网
He often goes shopping online.
他经常在网上购物。
短语
例句
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['tel v n] n.电视机；
电视节目
I want to turn on the television.
我想打开电视机
例句
television
TV
讲解
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[ :l' ] conj.虽然；
尽管；即使
though, although, “虽然”, 引导让步状语从句. 　　
although常位于句首; though 可位于句首或句中
Although I was only six, I can remember seeing it on TV.
They will probably win, though no one thinks so.
例句
讲解
这两个均为连词， 不能与but 连用。
注意！
[θru:] prep.穿过；
凭借；以
through表方式，意为“以，凭借”。
讲解
例句
拓展
through 还可表方向，意为“穿过；经过”，多指穿过门、窗，森林、城市、隧道等。
Eg: The River Thames flows through London.泰晤士河流经伦敦。
I knew this news through a newspaper.
我是从报纸上得到这个消息的。
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across 从事物表面横过(含有从一边到另一边) I went across the road.
我穿过马路。
through 从事物内部穿过 I see him through the window. 我透过窗户看他。
【辨析】across与through
拓展
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[ma nd] .头脑；
想法；心智
（1）n.“大脑，思维” change one's mind 改变主意
讲解
（2）v.“介意” Would(Do) you mind doing sth 表示希望对方做某事
I changed my mind after seeing it. 在看了这个之后，我改变了我的主意。
例句
Do you mind opening the door 你介意开个门吗
例句
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Would(Do) you mind one’s doing sth
用来请求允许或询问对方是否介意自己或别人做某事
Eg: Would you mind my/me asking you a few questions
你介意我问你几个问题吗？
Would you mind not ____ There are some children here.
A. smoking B.smoke C.to smoke D.smokeing
D
练一练
讲解
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['b di] n.身体
It is healthy for the mind and the body.
它对身心是健康的。
例句
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[s t ] adj.这样的；
那样的；类似的
二者都有“如此；这样”的意思，但具体用法相异。such用来修饰名词，so用来修饰形容词或副词。
①such＋a/an＋adj.＋n.(单数) ②such＋adj.＋n.(复数/不可数名词)
③so＋adj./adv.
④so＋adj.＋a/an＋n.(单数)＝such＋a/an＋adj.＋n.(单数)
⑤so＋many/few/much/little＋n.(复数/不可数名词)
拓展
such和so
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He is such a clever boy.＝He is so clever a boy.
It's such fine weather today.
They didn't have so much time to do their homework.
他们没有如此多的时间去做作业。
例句
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例如；像……这样
拓展
辨析：such as与for example
（1）such as
意为“例如”，列举事物时，放在被列举事物与前面的名词之间。后面跟名称、代词、动词的ing形式。
如：There are few poets such as Keats.像济慈这样的诗人现在很少了。
2）for example
意为“例如”，用来举例说明，可作独立语，放在句中。
如：I 'd like to keep a pet, for example, a dog.我想养个宠物，譬如说一条狗。
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I have a lot of hobbies, such as __________and ___________.
我有许多爱好，比如读书和唱歌。
studying
singing
练一练
[t 'ɡe (r)] adv.共同；
在一起
1.together with 和；连同
2.get together 聚会；聚集；收集；积累
We went everywhere together.
我们到哪里都一起去。
例句
短语
[da ] v.死；灭亡；消失
讲解
例句
He is dying. 他快要死了。
用法1
作“死亡”讲，是不及物动词，不能用于被动语态，是瞬间动词，不能与表示一段时间的状语连用。?
His grandfather died five years ago. 他祖父五年前去世的。
用法2
die可以用于进行时态，表示“即将死去，奄奄一息”。
例句
现在分词：dying
注意：
拓展
dead 死的，是die的形容词形式。可作表语或定语。作表语时，表示状态。 短语：be dead
death 死亡，是die的名词形式。 短语：the death of
His dog has been dead for two weeks. 他的狗已死了两周了。
His mother's death made him very sad. 他母亲的去世使他非常难过。
例句
1.His father _____ last week.
2.She cried out after knowing his husband's _____.
3..He found a ______ bird in the garden.
4.The ____ man was saved by a kind-hearted lady.
5.He has been ______for two days.
练一练
died
death
dead
dying
dead
['ra t (r)] n.作者；作家
Who is your favourite writer
谁是你特别喜欢的作家？
讲解
write(v.)写 writer作家；作者
名词
过去式
wrote
例句
['dent st] n.牙科医生
I have to go to the dentist tomorrow.
我明天得去看牙医。
例句
短语
go to the dentist 去看牙医
see a dentist
['m ɡ zi:n] n.杂志；期刊
American Teenager magazine 美国青年杂志
短语
[ha 'ev (r)] adv.
然而；不过
She was ill. However, she still went to work. 她病了，然而她依然去上班。
but和however
but 直接连接前后两个句子，转折的意味比however强，特别表示非常明显的对比，。
However “然而，但是”。 不能直接连接句子，必须用逗号与句子隔开。
例句
讲解
1.It began to rain, ___________ ,we went out to look for the boy.
2. It a sunny morning，___________very cold. 这是个晴朗的早晨，但是却很冷。
练一练
however
but
[ n] prep.& conj.
（引出比较的第二部分）比
She's smarter than her brother.
她比她哥哥聪明。
例句
than可视为比较级的标志词
讲解
多于
more than 相当于over。
意为“超过，多余”。
There are more than 2000 books.
那你有超过2000本书
讲解
例句
[' :lm st] adv.几乎；
差不多
almost 与 most
①. almost adv. 差不多，几乎
Last year, the sudden Spanish flu almost killed him.
This team has worked on this subject for almost three years.
②. most adj. 大部分的，多数的；最多的
The president himself won the most votes. 总统本人赢得了最多的选票。
讲解
[n n] pron.没有一个；毫无
none + of +名词复数/人称代词宾格 表示“三者以上都没有”
None强调数量，用How many提问。
Howmany students are there in the classroom —None.
讲解
例句
None of the students in our class is from Japan.
我们班没有来自日本的学生。
(1) none，no one与nothing的用法区别
易混词（短语） 用法
none ①既可以指人,也可以指物;
②回答howmany/much引导的询问数量的问句,表示“没有一个;毫无”;
③可单独使用,也可与of连用，后跟可数名词复数形式或不可数名词；none of与可数名词复数形式连用作主语时,谓语动词用第三人称单数形式和复数形式均可，与不可数名词连用作主语时，谓语动词用第三人称单数形式。
易混词（短语）no one 用法①只能指人,不能指物;
②回答who引导的问句,表示“没人”;
③通常单独使用,不与of连用，其作主语时，谓语动词用第三人称单数形式。
nothing ①只指事物,不指人;
②回答what引导的问句，表示“没有事；没有任何东西”；
③其作主语时，谓语动词用第三人称单数形式。
拓展
[les] adj.较少；较小
less 是little的比较级，
She has less milk than me.
她牛奶比我少
讲解
例句
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少于
less than 意为“不到，少于”。其反义词为 more than \ over “多余，超过”
讲解
例句
She sleeps less than seven hours every night.
他每晚的睡眠时间不到7小时。
We know Tom for 20 years.
我们认识Tom超过20年了
[p nt] n.得分；点
v.指；指向
one point one”
give one's point
说出某人观点
point vi. “指(点)” point to /at指向
短语
例句
He pointed to the door.
他指向了门
She always gets good points in any subject.
不管哪一学科，她总是得高分。
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