Unit 8 We’re trying to save the earth!同步练习(3课时)

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名称 Unit 8 We’re trying to save the earth!同步练习(3课时)
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Unit 8 We're trying to save the earth! 
第1课时(Section A 1a-3b)
一、单词拼写。
请背诵词汇表,并默写单词。
名 词:1.b________底部; 最下部
2.f________渔民;钓鱼的人
3.c________煤; 煤块
4.a________优点; 有利条件
5.t________外卖食物
6.b________垃圾箱
7.s________鲨鱼
8.f________ (鱼)鳍
9.c________链子;链条
10.e________生态系统
11.i________工业;行业
12.l________法律;法规
形容词:1.u________丑陋的;难看的
2.w________木制的;木头的
3.c________残酷的;残忍的
4.h________有害的
5.s________科学上的;科学的
兼类词:1.l________ v.乱扔 n.垃圾;废弃物
2.c________ v.花费 n.花费;价钱
3.p________ adj.塑料的 n.塑料;塑胶
二、短语翻译。
请浏览教材,找出以下短语,并背诵之。
1.play a ________ ________在……中起作用;扮演角色;参与……
2.clean ________打扫干净;整理好
3.cut ________削减;砍倒;删节
4.make a ________影响
5.lead ________通向;导致
6.cut ________切除;切断;中断
7.________ the top ________在……顶部或顶端
8.the food ________食物链
三、完成句子。
请仔细阅读教材,补充完整下列句子。
1....we should take ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )the bus or subway ________ ________ driving.……我们应乘公交车或地铁而不是开车。
2.I think simple ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) things like ________ a bag to go shopping can help.我认为像带着袋子去购物这样的小事情可能有所帮助。
3.This method is ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) ________________ cruel, ________ ________ harmful to the environment.这种方法不但残忍,而且对环境有害。
单项填空。
(  )1.I think we will play________ Class one this afternoon.
A.about B.in
C.to D.against
(  )2.Your bedroom is too dirty.Please ________.
A.clean it up B.clean up it
C.set it up D.put it up
(  )3.The bo ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )y stayed at home all day ________ going to school last term.
A.instead
B.instead of
C.take place of
D.take the place of
完成句子,每空一词。
4.电在我们日常生活中起着重要作用。
Electricity________ an important ________ in our daily life.
5.你的抽屉真是一片混乱,你介意清除一下吗?
Your drawer is ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )really a mess.Would you mind ________ ________ ________?
6.要是你忙的话,就改日再来吧。
If you are busy, you may come another day ________. 
7.我们必须减少水的用量。
We must ________ ________ ________ the amount of water we use.
8.昨天晚上我们县城的电被切断了。
Electricity was ________ ________ in our town last night.
9.不仅是我而且他也想去看电影。
Not only I ________ ________ he ________ to see a film.
10.他不仅说得更准确,也更简单。
________ ________ ________ he speak more correctly, but he spoke more easily.
一、根据句意及首字母或汉语提示完成单词。
1.Smoking is h________ to our health.
2.The girl is u________, but her sister is beautiful.
3.My father likes wearing his ________ (木制的) shoes.
4.We should bring ________ (塑料) bags for shopping.
5.He had the ________ (长处) of a good education.
二、用所给单词的适当形式填空。
1.I saw two ________ (fisherman) selling fishes in the market.
2.Throwing ________ (litter) away isn't allowed.
3.He has many ________ (advantage).We like to get on well with him.
4.The best ________ (method) to protect the environment is to avoid kinds of pollution.
5.The price of these ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) oranges is ________ (low) than that of those apples.
三、单项填空。
(  )1.He would like to ________the next Clean up Day.
A.play with B.play to
C.play against D.play a part in
(  )2.We will help to ________ the city.
A.clean out B.clean up
C.clean on D.cleaned out
(  )3.I watched TV________ doing my homework last Sunday.
A.instead B.instead of
C.but D.and
(  )4.This blue shirt ________ him 20 dollars.
A.cost B.spend C.take D.pay
(  )5.We should stop ________ trees at will (随意).
A.cutting off B.cutting down
C.cutting down on D.cutting up
(  )6.Not only ________ dance well, but he sings very well.
A.he does B.does he
C.does D.he
(  )7.I think si ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )mple things like bike ________ can help to keep healthy.
A.ride B.riding
C.to ride D.rode
(  )8.His work really ________ in the factory.
A.makes a different B.makes difference
C.makes different D.makes a difference
(  )9.The number of ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) the students in our school ________ in the last few years.
A.has fallen B.had fallen
C.fell D.has fell
(  )10.He can ________ dance, because his leg was badly hurt.
A.no more B.no longer
C.not more D.not longer
四、配对阅读。
(  )1.Every day, in ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )homes all over the world, people leave lights on when no one is in the room.(  )2.Air cond ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )itioners are usually set at too low temperatures in summer.(  )3.A lot of water is wasted by using too much.(  )4.We'll ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )have less and less gas to use because more people buy cars.(  )5.People, especially children, watch TV for too many hours. A.Try our best to make ( http: / / www.21cnjy.com )friends with the countries in the Middle East and ask them to give us more gas in the future.B.We should walk to ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) work, ride a bike to school, and take a bus home more often instead of driving cars.C.Encourage people ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )to do more outdoor activities in their free time.Get children to learn more from reading books.D.Plants more tr ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ees and grass around our houses.Ask people not to cut down the trees.Use your handkerchief instead of using paper napkins.E.In rooms wh ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ere you have an air conditioner, you can save electricity by cleaning the filter (滤波器).A filter uses 30% more energy when it is dirty.Also, set the air conditioner at 26 degrees.F.Always keep the saying in mind “Turn off lights before leaving.”G.Take a shower instead of a bath, for a bath uses twice as much as water.Don't flush (冲洗) the toilet unnecessarily.
第2课时(Section A Grammar Focus-4c)
一、单词拼写。
请背诵词汇表,并默写单词。
名 词:t________运输业;交通运输
动 词:a________承担得起(后果);买得起
形容词:r________可重复使用的;可再次使用的
二、短语翻译。
请浏览教材,找出以下短语,并背诵之。
1.take ________ in参加
2.take ________采取行动
3.begin ________从……开始
4.turn ________关掉
5.pay ________付费;付出代价
三、完成句子。
请仔细阅读教材,补充完整下列句子。
1.________ you ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) ever ________ part in an environmental project 你曾经参加过环境课题的活动吗?
2.It was________ the biggest clean up project this city________ ever________.它被认为是这个城市最大的清洁课题。
3.I guess everyone in ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) this city is ________ to improve the environment.我想这个城市里的每个人都在尽力改善环境。
4.We can't _ ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )_______ to wait any longer to ________ action.我们迫不及待要采取行动了。
完成句子,每空一词。
1.这个妇女不能承担她孩子的教育费用。
The woman couldn' ( http: / / www.21cnjy.com )t ________ ________ ________ for her child's education.
2.汤姆未曾住在这里。
Tom________ ________ ________ ________ here.
用take part in, join, join in或attend的正确形式填空。
3.She ____________ the Party last year.
4.Why didn't you ____________ the talk last night
5.We often ____________ the school English club.
6.Everyone else ____________ the meeting except me.
单项填空。
(  )7.Look! What ________ over there
A.happens B.happening
C.is happening D.happen
(  )8.—________ you ________ your homework yet? 
—Yes.I ________ it a moment ago.
A.Did; do; finished
B.Have; done; have finished
C.Have; done; finished
D.Will; do; finish
(  )9.Food safe ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ty is important.Rules________ to protect people from food pollution.
A.must make B.must be made
C.can't D.can't be made
(  )10.—Who is the little girl in the picture
—It's me.The picture ________ 10 years ago.
A.took B.is taken
C.has taken D.was taken
(  )11.According ( http: / / www.21cnjy.com )to our plan, a new teaching building ________.
A.will build B.will be built
C.is built D.builds
(  )12.I have my own ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) room in my house, so I ________ do what I want in it.
A.must B.have to
C.need to D.can
(  )13.—Could I have a look at your pictures
—Yes, of course you________.
A.could B.can
C.will D.might
一、根据句意及汉语提示完成单词。
1.I can't ________ (买得 ( http: / / www.21cnjy.com )起) to buy the car, because I don't have enough money.
2.We should collect the ________ (可重复使用的) materials in our life.
3.I don't lik ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )e to use public ________ (交通运输), because it's not convenient for me.
4.Now the air has ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )become badly ________ (污染),we have to keep it clean.
5.I have taken part in an ________ (环境的) project since last year.
二、用所给单词的适当形式填空。
1.Everyone is ________ (try) to improve the environment at present.
2.The teacher ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )often tells us saving the earth ________ (begin) with small things.
3.We always save elec ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )tricity by ________ (turn) off the light when we leave the room.
4.Our head tea ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )cher told us we had to make a plan before ________ (take) action.
5.We should obe ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )y the school rules and________ (be) strict with ourselves.
三、单项填空。
(  )1.—Have you had your breakfast yet
—No.Mom ________ it for me now.
A.was cooking B.is cooking
C.cooks D.cooked
(  )2.Miss Lin ________ a lot of work for the poor area since 2010.
A.does B.did
C.has done D.will do
(  )3.In recent years, the economy of our country ________ rapidly.
A.is increasing B.have increased
C.increased D.has increased
(  )4.There used _ ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )_______ a small river in front of my house.The water in it was clean.
A.be B.to be
C.to being D.is
(  )5.—How long can I ________ the book
—For two weeks.
A.keep B.borrow C.lend D.buy
(  )6.The film ha ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )d ________ for ten minutes when I ________ to the cinema.
A.been on; got B.begun; got
C.began; get D.been on; get
(  )7.—It's d ( http: / / www.21cnjy.com )ifficult to get to the other side of the river.
—I think a bridge ________ over the river.
A.should be built B.should build
C.will build D.has built
(  )8.—Must ( http: / / www.21cnjy.com )we wear our school uniform this afternoon
—No, you________.All of us will go on an outing.
A.mustn't B.ca ( http: / / www.21cnjy.com )n't C.needn't D.couldn't
(  )9.—Is that your teacher
—That ________ be M ( http: / / www.21cnjy.com )r.Wang.He has gone to Canada with his wife.
A.can't B.mustn't
C.can D.must
(  )10.Jimmy, you ( http: / / www.21cnjy.com ) ________ play with the knife.You ________ hurt yourself.
A.won't; can't B.mustn't; may
C.shouldn't; must D.can't; should
四、信息归纳。
All residents: Rules for living in Parkrise Flats
We all want to li ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ve comfortably and safely here, so here are a few simple rules which we think all residents should follow.
Rubbish
Rubbish collection ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )is on Tuesdays.Please do not leave rubbish bags out before Tuesday as birds and animals can break into them and they smell.
Washing
There is a washi ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ng line for every flat in the garden next to the car park.Please only dry your washing on these lines so it does not disturb (干扰) people in the ground floor flats.
Cleaning
The main stairs ar ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )e cleaned twice a week by the Association, so please try to keep them tidy and clean and do not leave furniture or bags on the stairs or in the hallways.
Lights
The main ligh ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ts are on a timer and they stay on for five minutes when you press them.Please tell the Association if any lights are not working.
Noise
Residents are asked to ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) keep noise to a minimum.Loud music, etc.can disturb other people and the Association will get in touch with you if you make too much noise.
Safety
Make sure the main ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )outside door is always locked and do not let anyone in to the main building unless you know who they are.Sometimes people try to get in to the main stairs and then break into flats, so do not let people in unless they are coming to see you.
Parking
Each flat has one car ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) parking space.These are numbered and are at the back of the building.Do not use another resident's space.If you have more than one car you will have to park it on the road.Do not park where you are blocking entrances.
Problems
If you have any proble ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ms or questions, please call the Association at 0800 096 9000.
Information Card
The purpose of the text To ask the residents 1.________________.
The time of rubbish collections 2.________________.
Where people should dry their washing on the washing lines 3.________________.
The Association will talk with you If you 4.________________.
What can be learned from the text The Association is always ready 5.________________.
第3课时 (Section B)
一、单词拼写。
请背诵词汇表,并默写单词。
名 词:1.n________餐巾纸;餐巾
2.g________大门
3.b________瓶子
4.p________负责人;主席;总统
5.i________灵感;鼓舞人心的人(或事物)
6.i________铁
7.w________ (音乐、艺术)作品
8.m________金属
9.c________创造力;独创性
动 词:r________回收利用;再利用
二、短语翻译。
请浏览教材,找出以下短语,并背诵之。
1.throw ________扔掉;抛弃
2.put sth.to________ ________好好利用某物
3.build...________ ________……用……建出来……
4.pull...________ 拆下;摧毁
5.________ down上下颠倒;倒转
6.bring ________ 恢复;使想起;归还
三、完成句子。
请仔细阅读教材,补充完整下列句子。
1.________ ________ the lights when you leave a room.当你离开房间的时候要关灯。
2.Have you ever tho ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ught about how these things ________ actually ________ ________ to good use?你曾经考虑过这些东西如何能被切实地充分利用吗?
3.She has ________ doing this ________ a few years now.她现在做这事有几年了。
4.________ ________ can the art ________ happiness to others,________ it also shows that even cold, hard iron can be brought back to life with a little creativity.艺术不但可以给他人带来快乐,而且也说明只需要一点创造力,即便是冰冷、坚硬的铁也可产生活力。
用when, while或as填空。
1.________ you meet ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) a word you don't know, look it up in the dictionary.
2.The students took notes ________ they listened.
3.The teacher came in ________ we were singing in class.
4.We must strike ________ the iron is hot.
5.I will go to college ________ I grow up.
用hope或wish填空。
6.I ________ I could swim like a fish.
7.I ________ to have a pleasant journey.
单项填空。
(  )8.Many old ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) houses around our school will be ________ down next year and a large green area will appear.
A.thrown B.pulled
C.broken D.put
一、根据句意及首字母或汉语提示完成单词。
1.In order t ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )o protect the environment, it's important for us to r________ used books and paper.
2.Obama is the p________ of the U.S.A.
3.My English ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) teacher is waiting for my parents at the school ________ (大门).
4.The table is made of ________ (金属).
5.My mother gave me two________ (瓶) of milk.
二、用所给单词的适当形式填空。
1.You had better t ( http: / / www.21cnjy.com )ake your own bags when ________ (shop).
2.What was the air pollution ________ (cause) by
3.Have you ever ________ (throw) away things you don't like to use
4.I have also ________ (set) up a website to sell clothes online.
5.Can the book be ________ (bring) back to my room
三、单项填空。
(  )1.I was doing homework ________ the phone bell rang.
A.when B.while C.as D.if
(  )2.The old man lives in a house that ________ out of the stones.
A.built B.was built
C.build D.to build
(  )3.Look! An old tall building is being ________.
A.pulled out B.pulled down
C.pulled in D.pulled off
(  )4.Song Zuying is known ________ a singer.
A.for B.as
C.of D.to
(  )5.We ________ you to have a good trip.
A.wish B.hope
C.wish with D.hope to
(  )6.Mr.Green asked u ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )s to stop ________.So we stopped ________ to him at once.
A.talking; listening
B.to talk; listening
C.talking; to listen
D.to talk; to listen
(  )7.Waste paper must be ________ good use.
A.put B.put to
C.to put D.puts
(  )8.The lake near ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) my home used to ________ clean.But now it's too dirty.
A.was B.is
C.be D.are
(  )9.My father plans ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )________ an article about new methods of ________ math.
A.to write; learn B.writing; learning
C.to write; learning D.writing; to learn
(  )10.________ pretty, but also she is intelligent.
A.She is not only
B.Not only she is
C.Not only is she
D.Not she only is
四、完形填空。
It's very imp ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ortant that we all recycle.In nature, everything __1__ again.For example, when an animal dies,it becomes __2__ animal's food.Nothing is wasted.But humans have created things like plastic bags __3__ can't be broken down by nature.Our rubbish kills animals and __4__ water and soil.__5__ we continue making too much rubbish, the problem will only get worse.If nature can't reuse the rubbish, we must recycle __6__.We should clean up the rubbish we've made because nature can't.
Recycling is ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )also the right thing to do for another reason.The earth is rich in natural materials like water and trees, __7__ these materials are not endless.We use up our natural materials much __8__ than the earth is able to reproduce them.For example, each year we cut __9__ more than 6,000 square miles of forest.But it takes an average of 25 years for a new tree __10__.
Recycling can help us save the earth, so let's take action right now.
(  )1.A.use B.using
C.is used D.used
(  )2.A.another B.other
C.others D.The other
(  )3.A.who B.which
C.how D.where
(  )4.A.pollutes B.polluted
C.polluting D.Is polluted
(  )5.A.When B.Whether
C.Why D.If
(  )6.A.them B.their
C.it D.itself
(  )7.A.but B.so
C.and D.or
(  )8.A.fastly B.fast
C.faster D.fastest
(  )9.A.out B.down
C.in D.up
(  )10.A.grows B.for growing
C.growing D.to grow
难句搜索:
1.Recycling is also th ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )e right thing to do for another reason.回收是要做的正确的事情还基于另外一个原因。
2.Recycling can help ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )us save the earth, so let's take action right now.回收能帮助我们拯救地球,因此让我们立刻行动起来吧。
话题8 保护环境
1.Everyone in this to ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )wn should ________ ________ ________ ________ cleaning it up.这个城镇中的每个人都应该参与到清洁城镇的行动中。
2.I think ________ ________ like bringing a bag to ________ ________ can help.我认为像带着袋子去购物这样的小事情可能有所帮助。
3.So together, our ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ) actions can ________ ________ ________ and ________ ________ a better future! 因此,我们齐心协力就能带来变化,创造更加美好的未来。
4.All these small ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )things may ________ ________ and become big things that would ________ the environment.所有这些小事情也许累积起来便能变成改善环境的大事情。
5.Not only ca ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )n the art ________ ________ ________ others, but it also shows that even cold, hard iron can be ________ ________ ________ ________ with a little creativity.艺术不但可以给他人带来快乐,而且也说明只需要一点创造力,即便是冰冷、坚硬的铁也可产生活力。
节约资源, 保护环境,从我们身边的小事 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )做起。假设你是一个注重“低碳”生活的中学生, 请以“My Low carbon Life” 为题写一篇英文演讲稿,简单谈谈“低碳生活”的重要性,以及你所倡导的“低碳生活”方式。内容提示:
1.每天步行上学;
2.离开教室时,关灯、风扇、电脑等;
3.不用水时, 记住关水龙头,而且要循环使用水;
4.不使用塑料袋。
写作要求:
1.词数80个左右;文章的开头和结尾已给出,不计入总词数。
2.不得透露学校、姓名等任何个人信息。
My Low carbon Life
It's our duty to protect the environment.
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Lower carbon, happier life.Let's take action.
Unit 8 We're trying to save the earth!
第1课时(Section A 1a-3b)
课堂基础练习
1.D 句意:我认为今天下午我们将与一班对抗。 play against与……对抗。故选D。
2.A 句意:你的房间太脏了,请打扫。根据句意可知横线处表示“打扫”,可排除C、D两项,又代词必须放在中间,故选A。
3.B 句意:这个男孩上学期 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )整天呆在家里,而不去上学。空后是动名词短语,可排除A项;C、D两项为动词短语,与句子结构不符,也可排除。故选B。
4.plays; part 5.cleaning it out 6.instead 
7.cut down on 8.cut off 9.but also; wants 
10.Not only did
课后巩固提升
一、1.harmful 2.ugly 3.wooden 4.plastic
5.advantage
二、1.fishermen 2.litter 3.advantages 4.method
5.lower
三、1.D 句意:他想在下个清洁日发挥重要 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )作用。play against与……对抗;play with与……玩;play a part in起……作用。根据句意,故选D。
2.B clean out 意为“扫除,清 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )除,打扫干净”,clean up 意为“打扫干净,整理好”。根据句意,“把城市打扫干净”,故选B。
3.B instead of是短语介词, ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )意思是“代替;而不是”,它后面一般接名词、代词、动名词等;instead单独使用时,是副词,意思是“代替;顶替”。本句后面跟的是动名词,故选B。
4.A 句意为:这件蓝色的衬 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )衫花了他20美元。cost的主语必须是物;spend的主语必须是人;pay为“付款、赔偿”之意,主语通常是人;take常用于表示“占用、花费”时间,其主语通常为形式主语it或物。根据句意及句子结构可知选A。
5.B cut off ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )意为“切断”,cut down意为“砍倒”,cut down on意为“减少”,cut up 意为“切碎”。由句意“我们应该停止随意砍伐树木。”故选B。
6.B not only...but also 连接两个分句且not only 位于句首时,第一个分句中的主语和谓语要部分倒装。故选B。
7.B bike riding为固定用法,表示“骑自行车”。
8.D 本句意为“他的工作真的在这个工厂里起了很大的作用。”make a difference 意为“有关系,作用,影响”,故选D。
9.A 表示“……的数量”的句式,谓语动词用单数,又根据后面的时间状语,可以判断本句用现在完成时,故选A。
10.B 表示“不再做事 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )”有两种表达方式:no longer 和no more,前者表示时间上不再延续,后者表示数量上不再增加,根据语境可知此处为时间上不再延续,故选B。
四、1—5 FEGBC
第2课时(Section A Grammar Focus-4c)
课堂基础练习
1.afford to pay 2.didn't use to live 3.joined 
4.join in 5.take part in 6.attended
7.C 由句意“看!那边发生了什么事?”可知用现在进行时,选C。
8.C 从问句中的时间状语yet可知,问句应用现在完成时,故排除A、D两项。又由答语中有时间状语ago可知,用一般过去时,故选C。
9.B 句意:食品安全是重要的。必须制定规则来保护人们不受食品污染的危害。根据句意可知,此句为情态动词的被动语态,故选B。
10.D 根据句意“这张照片是十年前照的。”可知应为一般过去时的被动语态,故选D。
11.B 由句意“根据我们的计划,一座新的教学楼将被建。”可知用一般将来时的被动语态。故选B。
12.D 根据句意“我可以在我自己的房间里 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )做我想做的事情”可知应用can。must意为“必须;一定”,have to 意为“不得不”,need to 意为“需要”。故选D。
13.B 由“Yes”可知应表示“许可”,要用can,故选B。
课后巩固提升
一、1.afford 2.reusable 3.transportation
4.polluted 5.environmental
二、1.trying 2.begins 3.turning  4.taking
5.be
三、1.B 由now可知应用现在进行时。故选B。
2.C since意为“自从……以来”,强调过去的动作对现在造成的影响或结果,故用现在完成时。故选C。
3.D 句意:近些年来,国家的经济飞速发展 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )。 in recent years 意为“近些年来”,是现在完成时的时间状语,又主语是第三人称单数,故选D。
4.B 句意:我家门前过去有一条小河,河里面的水很清澈。根据句意要表示“过去曾经有……”应用there used to be。故选B。
5.A 此句表示一段时间,故应用 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )延续性动词。keep意为“续借”,是延续性动词;borrow意为“借入”,是短暂性动词;lend意为“借出”,是短暂性动词;buy意为“买”,为短暂性动词。故选A。
6.A 此句意为“当我到达电影院时,电影已 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )经上演了十分钟。”主句为过去完成时,从句应用一般过去时;begin为短暂性动词,不能用于表示一段时间的完成时的句子中,故选A。
7.A 句意:“到达河的另一边是困难的。 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )”“我认为应该在河上建一座桥。”根据句意可知为被动语态。含情态动词的被动语态的构成为:情态动词+be+done,故选A。
8.C must意为“必须”,其一般疑问句的否定回答应为“No, you needn't/don't have to.”, 故选C。
9.A 根据答语的后一句可知“那不可能是王老师”,故应用can't。
10.B 句意:吉米,你一定不要玩小刀 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 ),它可能伤到你。can't 意为“不可能”,mustn't 意思为“一定不要”,may意为“可能;也许”,故选B。
四、1.to follow the rules 2.On Tuesdays
3.In the garden 4.make too much noise
5.to help the residents
第3课时(SectionB)
课堂基础练习
1.When 2.as 3.while 4.while 5.when 
6.wish 7.hope/wish
8.B 根据句意“我们学校周围的许多旧的房子将被拆毁”可知选B。pull down拆下;摧毁。
课后巩固提升
一、1.recycle 2.president 3.gate 4.metal
5.bottles
二、1.shopping 2.caused 3.thrown 4.set
5.brought
三、1.A 句意:当我正做作业时,电话铃声 ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )响了。when可指时间点和时间段,while只能指时间段,从句中用延续性动词,as多用于表示两个动作同时发生,或者一种状态随另一种状态的变化而变化。根据句意,故选A。
2.B 句意:这个老人住在由石头建造的房子里。house与build构成动宾关系,house做主语,要用被动语态,故选B。
3.B 句意:看!一座旧的高楼正在被拆毁。表示“拆毁”应用词组pull down, 故选B。
4.B be known fo ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )r表示“因为……而有名”。 be known as 表示“作为……身份而出名”。由句意“宋祖英作为歌唱家而出名。”故选B。
5.A 只有wish后面可接“宾语+不定式”。故选A。
6.C stop to do s ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )th.意为“停下来去做某事(此事没做)”,stop doing sth.意为“停止做某事”。句意:格林先生叫我们停止说话,因此我们立刻停下来听他讲。故选C。
7.B put to good use好好利用。
8.C used to do sth.过去常常做某事。
9.C plan to do sth.计划做某事, of 为介词,后接动名词形式,故选C。
10.C not only...but al ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )so 连接两个分句且 not only 位于句首时,第一个分句中的主语和谓语要部分倒装。故选C。
四、1—5 CABAD 6—10 CACBD
写作积累专练
参考范文:
My Low carbon Life
It's our duty to protect the environment.
As we all know, w ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )ith the global warming and energy consumption, the environment is becoming worse and worse.It is very important for us to start with a low carbon lifestyle.But how can we live a low carbon life Here are my ideas.
Firstly, it is a very ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )good idea for us to go to school on foot instead of by car.It is good for the environment and our health as well.Secondly, remember to turn off the lights, fans and computers when we leave the classrooms.Thirdly, it is important for us to turn off the tap when we finish using the water.We can reuse water, too.For example, we can reuse the water to water the flowers or trees.At last, try to use the cloth shopping bags instead of plastic bags when we go shopping.(In addition, it is important for us to use fewer fast food boxes or chopsticks so that we can reduce the white pollution.)
I believe our life wil ( http: / / www.21cnjy.com" \o "欢迎登陆21世纪教育网 )l become better and better if we can do these things.
Lower carbon, happier life.Let's take action.