Unit13 ?We are trying to save the earth!教案

2022-2023人教版英语九年级全一册Unit13 We are trying to save the earth!教案
教学目标:
1. 词汇
2. 短语搭配
3. 语法
4. 句型。
教学重点与难点：
1. 复习现在进行时
2. used to句型
3. 被动语态
4. 现在完成时和情态动词。
一、重点单词：
1. litter v.乱扔；n. 垃圾； 2. ugly adj. 丑陋的； 3. advantage n. 优点； 4. cost v. 花费；
5. wooden adj. 木制的； 6. bottom n. 底部； 7. fisherman n. 渔民； 8. coal n. 煤；
9. plastic adj. 塑料的； 10. takeaway n. 外卖食物； 11. bin n. 垃圾箱 12. shark n. 鲨鱼；
13. fin n. 鱼 鳍 14. method n. 方法； 15. cruel adj. 残酷的； 16. harmful adj. 有害的；
17. chain n. 链条； 18. ecosystem n. 生态系统； 19. industry n. 工业； 20. law n. 法律；
21. afford v. 承担得起； 22. recycle v. 回收利用； 23. reusable adj. 可重复使用的；
24. transportation n. 运输业； 25. napkin n. 餐巾； 26. gate n 大门； 27. bottle n. 瓶子；
28. president n. 负责人，总统； 29. inspiration n. 灵感； 30. iron n. 铁；
31. work n. （音乐，艺术）作品 32. metal n. 金属； 33. creativity n. 创造力；
二、重点词组
1. at the bottom of the river在河床底部 2. be full of the rubbish充满了垃圾
3. throw litter into the river把垃圾扔入河中 4. play a part in cleaning it up 尽一份力把它清理干净
5. land pollution土地污染 6. fill the air with black smoke 使空气中充满了黑烟
7. cut down air pollution减少空气污染 8. make a difference产生影响 9. shark fin soup鱼鳍汤
10. at the top of the food chain处于食物链的顶端
11. in the last 20 to 30 years 在最近的20到30年间
12. environmental protection groups around the world 全球环境保护组织 13.develop laws 建全法律
14.the sale of shark fins 鱼鳍买卖 15. take part in 参加
16. can’t afford to do sth 负担不起做某事
17. take action 采取行动 18. turn off 关掉 19. pay for付费 20. add up累加
21. use public transportation 使用公共交通 22. recycle books and paper 回收书和废纸
23. use paper napkins 使用纸巾 24. turn off the shower 关掉喷头 25. ride in cars 开车出行
26. throw away 扔掉 27. put sth to good use 好好利用 28. pull…down拆下
29. an old boat turned upside down一艘倒过来的旧船 30. be an inspiration to sb 成为…的榜样
31. set up a website 建立一个网站 32. a ―metal art theme park 一个“金属艺术”主题公园
33. be known for 以…而闻名 34. not only…but also…不仅…而且…
三、重点句式
1. Even the bottom of the river was full of rubbish. 即使河底都充满垃圾。
2. Everyone in town should play a part in cleaning it up.城里的每个人都应当尽一份力把它清理干净。
3. The air is badly polluted because there are too many cars on the road these days.
空气被严重污染因为如今路上的汽车太多了。
4. To cut down air pollution, we should take the bus or subway instead of driving.
为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。
5. I used to be able to see stars in the sky.我过去能在天空中看到星星。
6. The air has become really polluted around here. I’m getting very worried.
这儿的空气真的已经被污染了，我非常担心。
7. No scientific studies have shown that shark fins are good for health.
没有科学研究说明鱼鳍对人们的健康有好处。
四、复习现在进行时、used to句型、被动语态、现在完成时和情态动词。
知识点
The air has become really polluted around here. 这儿的空气已经被污染了。
辨析：turn, get 与become
⑴ become多指身份、职位等的变化，它强调变化的过程已经完成，后面可接名词或形容词。
He becomes a teacher. 他成了一名老师。
⑵ get多用于口语，表示一种变化过程，强调的是“渐渐变得”，后常接形容词的比较级形式。
In winter the days get shorter. 冬季白天变得较短。
⑶ turn指在颜色和性质等方面与以前的完全不同，强调变化的结果。
Leaves turns brown in the mountains.
【小试牛刀】
① Her mother ____ angry when she heard the news.
② It’s _____ darker and darker outside. ③ The milk has _____ bad
2. To cut down air pollution, we should take the bus or subway instead of driving. 为了减少空气污染，我们应该乘坐公共汽车或者地铁，而不是开车。
cut down 意为“减少”；是“动词+副词”结构的短语，所带的宾语为名词时，宾语可位于down的前面或后面；为代词时，只能位于down前面。
You’d better cut them down to about 2,000 words. 你最好能把这篇文章压到两千字左右。
【拓展】 cut down 还可表示“砍倒”的意思。 They cut down the big tree.
Cut up 切碎
Cut into 把…切成
Cut off 切除；切断
Cut in 插队
【小试牛刀】 —Did you tell it to Jack
--Yes, but we were ____ in the middle of our telephone conversation.
A. cut down B. cut off C. cut up D. cut into
3. It’s good for health and it doesn’t cost anything!
cost vt. 花费；价格为；值：
例句: It must cost a good deal to live here. 住在这里一定要花很多钱的
[拓展]：take， spend ，cost ，pay的用法都可以表示花费，但用法却不尽相同。
①. spend的主语必须是人， 常用于以下结构：
(1) spend time ／money on sth. 在……上花费时间（金钱）。
例：I spent two hours on this maths problem. 这道数学题花了我两个小时。
(2) spend time ／money (in) doing sth. 花费时间（金钱）做某事。
例：They spent two years (in) building this bridge. 造这座桥花了他们两年时间。
②. cost的主语是物或某种活动， 还可以表示―值， 常见用法如下：
(1)sth. costs (sb.) ＋金钱,某物花了（某人）多少钱。
例：A new computer costs a lot of money. 买一台新电脑要花一大笔钱。
③. take后面常跟双宾语， 常见用法有以下几种：
(1) It takes sb. ＋时间＋to do sth. 做某事花了某人多少时间。
例：It took them three years to build this road. 他们用了三年时间修完了这条路。
(2) doing sth. takes sb. ＋时间,做某事花了某人多少时间。
例：Repairing this car took him the whole afternoon. 他花了一下午修车。
④. pay的基本用法是：
(1) pay (sb.) money for sth. 付钱（给某人）买……。
例：I have to pay them 20 pounds for this room each month. 我每个月要付20英磅的房租。
(2)pay for sth. 付……的钱。例：I have to pay for the book lost. 我不得不赔丢失的书款。
(3)pay for sb. 替某人付钱。例：Don’t worry! I'll pay for you. 别担心， 我会给你付钱的。
(4)pay sb. 付钱给某人。 例: They pay us every month.他们每月给我们报酬。
(5)pay money back 还钱。
例：May I borrow 12 yuan from you I'll pay it back next week. 你能借给我12块钱吗？下周还你。
(6)pay off one's money还清钱。
【课堂变式】
1. — How much is the ticket to Central Park
—A one-way ticket ______ $40, and you can ______ another $20 for a round-trip.
A. costs, pay B. cost, spend C. pay, spend D. spends, pay
2. --Do you take exercise every day —--Yes. I always ___thirty minutes after supper.
A. spend B. cost C. take D. pay
3. I _________ $300 for the bike. A. took B. spent C. cost D. paid
单项选择。
1. He ____ go out with his parents, but now he ____ staying at home alone.
A. used to; is used to B. is used to; used to C. use to; is used to D. is used to; is used to
2. The interesting book _____ me 10 yuan.
A. spent B. took C. paid D. cost
3. We must do something useful to ____ pollution.
A. cut off B. cut up C. cut down D. cut in
4. Smoking can _____ lung cancer. You’d better give it up.
A. work on B. lead to C. take away D. put out
5. What are the _____ of bike riding —---It can help cut down air pollution.
A. advantages B. reasons C. results D. ideas
6. —Are you going to _____ any of the events —Yes. Maybe long jump and high jump.
A. take part in B. join C. attend D. join in
7. I can’t afford ____ him an expensive birthday present.
A. to buy B. buying C. for buying D. buy
8. —Remember to ____ the lights when you leave the room. —OK. I will.
A. turn on B. turn down C. turn up D. turn off
9. The girl always has some money to ___ snacks.
A. spend B. pay for C. take D. cost
10. —Look! _____ boys are playing on the playground. ---Yes. _____ them is about 200.
A. The number of; A number of B. The number of; The number of
C. A number of; the number of D. A number of; A number of
And the gate in front of her house is made of rocks and old glass bottles.
她房子的前门是由岩石和旧玻璃瓶子制成的。
be made of/be made from
be made by
be made in
be made up of
[小试牛刀】单项选择。
Books are made _____ paper and paper is made _____ wood.
A. from, of B. of, from C. in, from D. from, in
Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be brought back to life with a little creativity.
不仅艺术品能给人们带来快乐，而且冰冷坚硬的钢铁在艺术创作下也恢复了生命。
“not only … but also …”是一个并列连词词组，其意思基本等于“both … and …”。
使用not only but also 时须注意的几点：
⑴ not only与but also后面所连接的词的词性必须对等：
They completed the project not only punctually but also perfectly.
⑵ not only只能连用，而but also既可连用，也可分开用：
Television is not only boring, but it also wastes a lot of time. 电视不仅乏味，而且还浪费许多时间。
⑶谓语动词的数应与but also后主语的数保持一致：
Not only you but also Mr. Zhang teaches in this college. 不仅你，张老师也在此学院教书。
⑷ not only放在句首，后接句子时要用倒装结构：
Not only had the poor man been fined, but also he had been sent to prison. 这个可怜的人不仅被罚款，而且还被送进了监狱。
【小试牛刀】
1. This is my twin sister, Lucy. Not only she but also I __________ good at drawing.
A. is B. am C. are D. was
6. Which parts need to be improved 哪些部分需要被改善？
辨析：need to be done; need doing与need to do
⑴ need doing=need to be done 需要被..现在分词doing表被动“需要被做”，相当于need to be done。
My watch needs repairing. =My watch needs to be repaired.我的表需要修了。
⑵ need后加不定式，证明need为实义动词，而非情态动词，这时need有人称和数的变化。
He needs to get up early. 他需要早起。
【小试牛刀】
Something is wrong with my car. It needs _____. A. repair B. to repair C. repairing D. to be repair
专题复习-语法
【语法点拨】
本单元复习现在进行时、used to句型、被动语态、现在完成时和情态动词。
1. 现在进行时：
（1）含义：表示正在发生或进行的动作。
（2）基本结构： 主语 + be + 现在分词（be 的形式随主语的变化而变化）
（3）基本用法：
①表示现在正在进行的动作。特征：常常与now或具体的时间连用，有时句中会有感官动词来提示，或通过上下文来暗示。
②表示现阶段一直进行的动作。这类动词常常是延续性动词。
常于at present, this week, these days等连用。
③表示主语的特征、性格、能力等。
2. 现在完成时
（1）含义：表示过去发生的动作对现在还有影响。
（2）基本结构：主语 + have / has + 过去分词
（3）基本用法： ①表示过去发生的动作，但强调对现在产生影响。
特征：不能与表示具体的时间状语连用。
②表示过去发生的动作或存在的状态一直延续到现在，还可能继续下去。常常与since, for, in the past + 时间名词，in the last +时间名词等时间状语连用，而且谓语动词要求是延续性动词。
③表示一种“经历或体验”，即可以表示经历过也可以是从来都没有经历过。
3.被动语态
初中阶段我们学习了七种被动结构，归纳如下：
（1）一般现在时是被动语态：am / is / are + 过去分词
（2）现在完成时的被动式： have / has + been + 过去分词
（3）现在进行时的被动式：am/ is/ are + being + 过去分词
（4）一般过去时的被动式：was / were + 过去分词
（5）过去进行时的被动式：was / were + being + 过去分词
（6）过去完成时的被动式：had + been + 过去分词
（7）一般将来时的被动式：will / be going to be+ 过去分词
（8）含有情态动词的被动式： 情态动词+be +动词的过去分词。
4.情态动词
情态动词表示说话人对某一动作或状态的态度，如认为“可能”、“应当”、“必要”等。情态动词本身有一定的意义，但不能单独作谓语，也没有人称和数的变化。后面一般跟动词原形。
5. used to 结构
used to意为“过去常常做某事”，指的是过去的习惯性动作，目的在于与现在形成对照。
used to是个情态动词，其中的to是不定式符号，后面跟动词原形。在美式英语中。
它的疑问式是：Did ＋主语＋use to do sth．？
否定式是：主语＋didn't use．．。
在英式英语中，它的疑问式应当是：Used ＋主语＋to sth．？
否定式应当是used not to或use（d）n't to。 He used to stay up late. 他过去常熬到很晚。
【实战演练】
I. 用所给词的适当形式填空。
1. The old man used __________ (be) a teacher.
2. We should ___________ (clean) the room every day.
3. Look! Tom __________ (sleep) in his room.
4. Lots of trees ___________ (plant) on the hill every year.
5. He ___________ (live) here for 20 years.
单项选择。
1. He promised to pick me up at the school gate. However, he _____ yet.
A. didn’t arrive B. doesn’t arrive C. isn’t arriving D. hasn’t arrived
2. Ba Jin, one of the greatest writers in China, ___ as ―People’s Writer.
A. is regarded B. has regarded C. is regarding D. regards
3. —Where is Tom ---He ______ in his room.
A. is reading B. reads C. read D. was reading
4. —May I go out now, Dad — No. You _____ let your mother know first.
A. can B. may C. need D. must
5. Her son _______ Coke, but now he ________ milk.
A. used to drink is used to drinking B. used to drinking drinks
C. is used to drinking used to drink D. is used to drink is drinking
课后作业
一、单项选择（共20分， 每题1分）
( ) 1.People,especially teens, think it ______great fun to surf on ________Internet. A. a; the B. a; / C. /; the D. the; the
( ) 2. ---Don’t _____too late, or you will feel tired in class. -----I won’t, Mum. Good night!
A. wake up B. get up C. stand up D. stay up
( ) 3.There’s a smile on the teacher’s face. I think she’s ______our work. A. worried about B. pleased with C. sorry for D. afraid of
( ) 4.---Have you found ______here in the room ----Everything is OK ______the broken window. A. special thing; except B. anything special; besides C. special thing; besides D. anything special; except
( ) 5.None of the shoes in the shops are the right size. They are _____too big ____too small. A. both; and B. neither; nor C. either or D. not only; but also
( ) 6.The price of this computer is the _______of the three.
A. smallest B. biggest C. highest D. tallest
( ) 7.No one can be sure ________in a million years. A. what will man look like B. what will happen on the earth C. where will humans live D. how many people are there in the world
( ) 8.A neighbor helped to keep our dog. It _______while we were on holidays. A. was taken good care of B. took good care of C. is taken good care of D. takes good care of
( ) 9.---What delicious bread! ---It would taste _______with jam. A. well B. good C. better D. delicious
( ) 10.Not only Tom but also his brother _______the Greener China for two years. A. has become a member of B. have joined C. have been a member of D. has been in
( ) 11. Have you seen my toy car, Bill ----It’s ______my way, so I put it ______.
A. in; away B. on; out C. in; out D. by; away
( ) 12.After school I found Mother was in bed sick. _____mother was ill, I should do something for her. A. So B. Though C. Since D. If
( ) 13.------_______weather it is today !Let’s go out for a walk. ------That sounds good! A. How fine B. How bad C. What a fine D. What fine
( ) 14.-----What should I do, doctor -----______healthy, you should take more exercise. A. Keep B. Keeping C. To keep D. Having kept
( ) 15.----Must we finish giving out the posters today ----Yes, we _______.It can’t be put off any longer. A. can B. may C. must D. needn’t
( ) 16.This place is suitable wild animals to live in. A. to B. at C. for D. with
( )17. —Some people think that animals should not live in zoos. —I agree them. A. about B. of C. with D. to
( )18. —Do you like polar bears, Anna —Oh, no. They are very . A. gentle B. fast C. aggressive D. endangered
( )19. Collecting and selling used things is a good way to money for the Children’s Hospital.
A. ask B. raise C. find D. make ( ) 20. —Have you ever seen this famous writer —No. I’ve just her. A. listened B. listened to C. heard D. heard of
二、阅读理解（共20分， 每题2分）
A
Hip-hop dancing(街舞) is popular with many young people today．They like it because they can invent their own
moves．They use this dance to show their love for life．It also．shows that they feel good about life，that they just
want to be themselves and enjoy lire，and that they are not afraid of problems．
Hip-hop dancing has a history of more than 20 years．It first began in the 1980s in the US．In early times，it was
seen in New York and Los Angles．At that time，many young black people often danced to the music in the streets．They
used their legs，arms，heads and even shoulders to dance．Many young people still use most of these moves today．
Hip-hop dancing became popular all over the world because of the 1983 movie Flash dance．Some people performed
Hip-hop dancing in the movie．People enjoyed their performance．They began to dance like them．Then it became
popular．There are two kinds of Hip-hop dancing：new school and old school．More and more young people are
learning Hip-hop dancing．People believe that it is a good way to exercise their bodies and that it is good for their
health．
根据短文内容。选择最佳答案。
( )1．Young people like Hip-hop dancing because ________．
A．it has a history of more than 20 years B．it first began in the US
C．they can invent their own moves D．many young black people often dance it
( )2．At first Hip-hop dancing was seen ________．
A．in the movies B．in the streets C．in the old schools D．in the new schools
( )3．The young black people used their to dance at that time．
A．legs B．heads C．arms and shoulders D．A，B and C
( ) 4．Hip-hop dancing became popular all over the world ________．
A．in the 1980s B．in 1983 C．20 years ago D．in early times
( ) 5．Which of the following is TRUE about Hip-hop dancing
A．It’s not a good way to exercise．
B．It shows that young people feel bad about lire．
C．Young people use this dance to show their love for life．
D．It shows that young people are afraid of problems．
B
People have lots of different thoughts that they wish to express. For many reasons, most people just keep their
thoughts to themselves and never tell them to others. Another form of self-expression is the written word. For many
people, it is easier for them to express their thoughts or emotions in writing, instead of speaking them out. It is an
especially popular way for expression among shy and highly self-conscious (自尊) people. People′s thoughts are
written down and then published(出版) so that others can read and enjoy them.
There are many reasons why newspapers and publishers actually publish people′s thoughts, but the major reason is togive information. With the introduction of newer technologies, new ways now appear to share people′s ideas quickly.
Blogs are just one way. People can now let the world know their hopes, dreams and day to day activities through a web
blog. Better than that, many sites allow customers to create their own web blog for free. The word blog comes from the words web and log. Slogging is the term that is used to refer to activities relating to a blog, such as creating it, updating
and adding content(内容). And the blogger is the person who puts that content on the blog. Blogs can be very powerful.
Blogs can change the world by changing the opinions of large numbers of people around the world.
( ) 6. People who are shy would like to express their thoughts by ________.
A. writing B. reading C. speaking D. thinking
( ) 7. According to the passage, the major reason that newspapers publish people′s thoughts
A. make money B. make them well-known C. give information D. let people relax
( ) 8. The latest and quickest way for you to share your thought with others is __________.
A. publishing it on the newspaper B. taking part in the everyday activities
C. talking to everybody you meet about it D. writing blogs on the web
( ) 9. The sixth paragraph is probably to ________.
A. tell us the web blog is very interesting B. tell us how to write a blog
C. explain the meaning of some related words D. show us the importance of the blog
( ) 10. Which of the following is NOT true according to the passage
A. No sites can help you create your own web blog for free.
B. Blogs can affect people around the world greatly.
C. The blogger is the person who puts some content on the blog.
D. A web blog can let the world know your wishes and dreams.