2015年人教版九年级英语第13单元课件一

1、Unit13 Were trying to save the earth!Section A 1a -2d（第1课时） 1. We should put up notice to stop from _ （乱扔）（乱扔）.2. The teacher asked us to find a way to pick up the coins at the _（底部）（底部）of the bottle.3. There are no more fish for _ （渔夫）（渔夫）to catch in the river.4. We should take the paper bags to go

2、 shopping instead of the _（塑料）（塑料）ones.5. Could you please tell us another _（优点）（优点） of riding bike to work?【检查预习检查预习】litterbottomfishermanplasticadvantagenoise pollutionair pollutionwater pollution1a. Write the words related to different kinds of pollution in the box below.(Pairwork or groupwork)lo

3、ud music cars rubbish planeslittering ships factories smokingbuilding houses mobile phones_loud musiccars rubbishplaneslitteringshipsfactoriessmokingbuilding housesmobile phones1b. Listen and complete the sentences What was the problem? The river was _.Even the bottom of the river was full of _. The

4、re were no more _ for fishermen to catch.What caused the problem?People are throwing _into the river.Factories are putting _ into the river.How should the problem be solved?We should write to the _ and ask them to _ the factories. Everyone should helpto _ the river.really dirtyrubbishfishlitterwaste

5、governmentclose downclean up 1. The air is badly polluted because there are _ on the road these days. 2. Factories that burn coal also _ the air with a lot of black smoke. 3. There is also too much rubbish and waste. People _ things every day. 4. People are also litter in _ like parks. This is turni

6、ng beautiful places into ugly places.2a Listen to the interview. the kinds of pollution that Jason and Susan talk about.A. waste pollution B. air pollution C. noise pollution D. water pollutionCircle2b. Listen again and complete the sentences.litteringmore carspolluteare throwing away Read the conve

7、rsation quickly, find out the answer to the question.What kinds of pollution are mentioned in this conversation?2d. Air pollution and waste pollution. 2.Read the conversation again and complete the blanks. Pollution Ways to solve the problem Air pollution Waste pollution Take the bus or subway inste

8、ad of driving;ride a bike.bring a bag to go shopping; only use wooden chopsticks or plastic forks at home;Throw rubbish in the bins This is turning beautiful places into ugly ones. turn into 把把变成变成e.g. The icy rain seemed like to turn into snow. 渐渐地冻雨又变成雪花的模样。渐渐地冻雨又变成雪花的模样。 2. Its good for health an

9、d it doesnt cost anything! cost v. 花费；使付出花费；使付出 指花费金钱，主语通常是物。指花费金钱，主语通常是物。cost的的过去式和过去分词均为过去式和过去分词均为cost。 e.g. The new shirt cost Mr Wang 200 yuan. 王先生花了王先生花了200元买了新衬衫。元买了新衬衫。 How much does the new computer cost? 新电脑花了多少钱？新电脑花了多少钱？ take, spend, pay & cost take，spend，pay和和cost都可以表示都可以表示“花花 费费”，但它

10、们的用法各有不同。，但它们的用法各有不同。 1) take多表示花费时间多表示花费时间，常用于，常用于It takes sb. some time to do sth.这一句型这一句型中，其中中，其中it作形式主语作形式主语。 e.g. It usually takes me 40 minutes to cook the dinner. 2) spend多表示花费时间和金钱，主语多表示花费时间和金钱，主语通常是人通常是人，常用于，常用于sb. spend(s) some time / money on sth.和和sb. spend(s) some time / money (in) doin

11、g sth.两种两种句型。句型。 e.g. David spent 2,000 yuan on the new machine. My father spends an hour (in) watching the news on TV every day. 3) pay多表示花费金钱，主语通常是人多表示花费金钱，主语通常是人，常用于常用于sb. pay(s) some money for sth.句句型。型。 e.g. Tommy paid 20 yuan for his breakfast yesterday. 4) cost多表示花费金钱，主语通常是物多表示花费金钱，主语通常是物，常用于

12、常用于sth. cost(s) (sb.) some money.句句型。型。 e.g. The new dress cost Linda 88 yuan. 根据句意用根据句意用take, spend, pay或或cost的适的适当当 形式填空。形式填空。 1. That new car _ them lots of money. 2. Mona _ 50 yuan on the books just now. 3. It usually _ me an hour to do my homework.cost?spent?takes 4. You should _? some time pra

13、ctising your pronunciation. 5. My brother _?6, 000 yuan for the new computer yesterday.spendpaid 3. So together, our actions can make a difference and lead to a better future! make a difference (to) 表示表示(对对)产生影响或作用产生影响或作用 e.g. Do you think his words would make any difference to the final decision? 你

14、认为他的话会对最后的决定产生你认为他的话会对最后的决定产生影影 响吗？响吗？ The new teacher always encourages little Tom. This has made a big difference to him.新来的老师总是鼓励小汤姆，这对他影新来的老师总是鼓励小汤姆，这对他影响很大。响很大。 用动词的适当形式填空。用动词的适当形式填空。 1. Were trying _ (save) the earth. 2. There used to _ (be) clean and beautiful. 3. There are too many _ for _ t

15、o catch (fish). 4. Its bad for environment to use _ (wood) chopsticks.to savebefishwoodenfishermen用方框中所给词的适当形式填空。用方框中所给词的适当形式填空。1. Dont throw _(垃圾垃圾) everywhere.2. In winter, many people burn _(煤煤) to keep warm.3. The police found a body at the _(底部底部) of the lake.4. The _(花费花费) of living in big cit

16、ies is very high.5. He keeps a rabbit in a big _(木制的木制的) box.cost wooden, coal , bottom, littercost woodencoalbottomlitter 根据句意用根据句意用take, spend, pay或或cost的适的适当当 形式填空。形式填空。 1. That new car _ them lots of money. 2. Mona _ 50 yuan on the books just now. 3. It usually _ me an hour to do my homework.cos

17、t spent takes 4. You should _ some time practising your pronunciation. 5. My brother _ 6, 000 yuan for the new computer yesterday.spendpaid 3. So together, our actions can make a difference and lead to a better future! make a difference (to) 表示表示(对对)产生影响或作用产生影响或作用 e.g. Do you think his words would m

18、ake any difference to the final decision? 你认为他的话会对最后的决定产生你认为他的话会对最后的决定产生影影 响吗？响吗？ The new teacher always encourages little Tom. This has made a big difference to him.新来的老师总是鼓励小汤姆，这对他影新来的老师总是鼓励小汤姆，这对他影响很大。响很大。Points on P97try to do =try ones best to do 努力去做某事努力去做某事be related to 与与有关有关mobile phones 手机

19、手机rubbish, litter ,waste 垃圾垃圾,废物废物the bottom of the river 河底河底be full of 充满充满fisherman-fishermen 渔民渔民government 政府政府throw litter into the river 把垃圾扔到河里把垃圾扔到河里ask sb. to do 要求某人干某事要求某人干某事close down the factories 关闭工厂关闭工厂clean up 打扫打扫used to be过去是过去是play a part in参与，在参与，在中扮演角色中扮演角色 Memory努力去做某事努力去做某事与

20、与有关有关手机手机垃圾垃圾,废物废物河底河底充满充满渔民渔民政府政府把垃圾扔到河里把垃圾扔到河里要求某人干某事要求某人干某事关闭工厂关闭工厂打扫打扫过去是过去是在在中起作用，在中起作用，在中扮演角色中扮演角色 Points on P98be badly polluted 受到严重污染受到严重污染public places 公共场所公共场所turninto 把把变成变成cut down 减少减少take the bus or subway instead of driving 乘坐乘坐公交或地铁代替开车公交或地铁代替开车ride a bike 骑自行车骑自行车advantages of bike

21、 riding 骑自行车的好处骑自行车的好处 Points on P58be good for our health 对我们的健康有好处对我们的健康有好处cost，spend，take, pay 花费花费wood-woodentakeaway food 外卖食物外卖食物throw rubbish in the bins 把垃圾扔进垃圾箱把垃圾扔进垃圾箱keep public places clean and beautiful 保持公共保持公共场所干净漂亮场所干净漂亮make a difference (to) (对对)产生影响或作用产生影响或作用lead to 导致，通向导致，通向 被污染被

22、污染 烧煤烧煤 太多太多 扔掉扔掉 把把.变成变成. 附近附近 能够能够 解决问题解决问题 减少空气污染减少空气污染 乘公共汽车或地铁乘公共汽车或地铁 代替、而不是代替、而不是. be polluted burn coal too much throw away o. around here be able to solve a/the problem cut down air pollution take the bus or subway instead of骑自行车骑自行车骑自行车有别的好处。骑自行车有别的好处。对对.有益有益垃圾污染垃圾污染去购物去购物开始做某事开始做某

23、事记得要把垃圾扔进垃圾桶记得要把垃圾扔进垃圾桶保持公共场所的整洁和美丽保持公共场所的整洁和美丽对对.有影响、有作用有影响、有作用通向美好未来通向美好未来ride the bikeThere are other advantages of bike riding.be good forwaste pollutiongo shoppingstart doingremember to throw rubbish in the binskeep public places clean and beatifulmake a difference to sb.lead to a better future

24、 用动词的适当形式填空。用动词的适当形式填空。 1. Were trying _ (save) the earth. 2. There used to _ (be) clean and beautiful. 3. There are too many _ for _ to catch (fish). 4. Its bad for environment to use _ (wood) chopsticks.to savebefishwoodenfishermen用方框中所给词的适当形式填空。用方框中所给词的适当形式填空。1. Dont throw _(垃圾垃圾) everywhere.2. I

25、n winter, many people burn _(煤煤) to keep warm.3. The police found a body at the _(底部底部) of the lake.4. The _(花费花费) of living in big cities is very high.5. He keeps a rabbit in a big _(木制的木制的) box.cost wooden, coal , bottom, littercost woodencoalbottomlitter 1.We are trying to save the earth.我们正在努力拯救

26、地球。我们正在努力拯救地球。 【解析】try doing sth 尝试做某事（不一定付出很大努力） try to do sth 尽力做某事（强调付出一定的努力设 法完成） 想一想? 尽某人最大的努力做某事 try_ 2. But it used to be so clean. 但它过去是如此干净。但它过去是如此干净。 【解析】used to 的意思是 _, 其中to是不定式符号，不是 介词，所以其后要接_。 be used to 的意思是_，其中to是介词，其后要接 _ 【合作探究合作探究】ones best to do sth.习惯干某事过去常常做某事动词原形doing2. He _ go

27、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 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, spe

28、nd D. spends, pay【合作探究合作探究】3. Its good for health and it doesnt cost anything! 它对身体有好处并且它对身体有好处并且不会花费任何东西。不会花费任何东西。 cost vt.1. 花费；价格为； 【拓展】take/ spend /cost /pay的用法都可以表示“花费”，但用法却不尽相同。spend的主语必须是_， 常用于 _ cost的主语是物或某种活动， 还可以表示“值”，用于 _ （注意：cost的过去式及过去分词都是cost,并且不能用于被动句。） take后面常跟双宾语， 常见于_ pay的基本用法是：_人人

29、Sb. spend time/money on sth.Sb. spend time/money doing sth.cost sb. money. It takes sb. sometime to do sth.pay money for sth.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。为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。 本句中本句中To cut down air pollution是动词不定式作目的

30、状语。是动词不定式作目的状语。cut down 意为意为_减少减少 We must do something useful to _ pollution. A. cut off B. cut up C . cut down D. cut in I. 单项选择。单项选择。1. Eating too much sugar can _ healthy problems. A. get to B. lead to C. point to D. able to2. -What are the _ of bike riding? - Its good for our health. A. advantag

31、es B. reasons C. results D. ideasII. 用所给词的适当形式填空。用所给词的适当形式填空。 1. There are many kinds of_（pollute）in our daily life. 2. All of the students should take part in_ (keep) our school clean and tidy. 3. Can you tell us your ideas for _ (improve) your spoken English. 4. We should stop using the_ (wood) ch

32、opsticks to protect the forest. 5. Their grandparents were _ (fisherman) near the sea before they moved to the town.当堂检测当堂检测B.A.pollutionkeepingimprovingwoodenfishermanersIII. 根据汉语意思完成下列句子。根据汉语意思完成下列句子。 1. 咱们玩纸牌吧，别看电视了。咱们玩纸牌吧，别看电视了。 Lets play cards _ _ watching TV. 2. 我们的行动会起作用，并且通向更好的未来。我们的行动会起作用，并

33、且通向更好的未来。 Our actions can _ a difference and lead to a _ future. 3. 这个木箱时装满了书。这个木箱时装满了书。 The _box_ _ _books. is full ofinstead ofmakebetterwoodenHomework We have only one earth,find out as many ways to solve pollution problems as possible. _.Section APeriod Threetake part inaffordturn offreusablepay

34、 fortake actiontransportation参加参加v. 买的起；承担的起买的起；承担的起（后果）（后果）关掉关掉adj. 可重复使用的可重复使用的付费；付出代价付费；付出代价采取行动采取行动n. 运输业；交通运输运输业；交通运输Words Review 用括号内所给动词的适当形式填空。用括号内所给动词的适当形式填空。 Listen! The phone _(ring). Please go to answer it. Alan, its late. Why not go to bed? Jenny hasnt come back yet. I _(wait) for her.

35、3. Whats your father doing now? He _ (write) a letter in the 1. study.is ringingam waitingis writing 肯定句肯定句: 主语主语 + am/is/are + -ing 否定句否定句: 主语主语 + am/is/are + not + -ing 疑问句疑问句: Am/Is/Are + 主语主语 + -ing 现在进行时表示现在或现阶段正在进行现在进行时表示现在或现阶段正在进行或发生的动作。或发生的动作。现在进行时现在进行时-基本结构基本结构表示说话时正在进行的，目前正在发表示说话时正在进行的，目前正

36、在发生的动作。常带有表示目前时刻的时生的动作。常带有表示目前时刻的时间副词间副词, 如：如：now, at the (very) moment, for the time being, at present, 及及Look! Listen! . Look! The big bird is flying away. 看，那只大鸟正在飞走。看，那只大鸟正在飞走。 He is watching a movie now. 他现在正在看电影。他现在正在看电影。 现在进行时现在进行时-用法用法2) 表示目前一段时间内正在进行，但表示目前一段时间内正在进行，但 说话时可能没有进行的动作。说话时可能没有进行的

37、动作。 Right now I am studying Chinese by distance learning. 我现在正通过远程教育学习汉语。我现在正通过远程教育学习汉语。现在进行时现在进行时-用法用法3) 与与always, constantly, forever, all the time等副词连用，表示动作反复或习等副词连用，表示动作反复或习 惯。此时句子常含有说话者的强烈惯。此时句子常含有说话者的强烈 情感在内。表达较强的情感在内。表达较强的“责备责备”或或“表表 扬扬”之意。之意。 You are always changing your mind. 你总是主意不定。你总是主意不

38、定。(太烦人了。太烦人了。) He is always helping others. 他总是帮助别人。他总是帮助别人。(他真是个好人。他真是个好人。) 现在进行时现在进行时-用法用法4) 对于对于come, go, leave, arrive, start等等 表示位置移动的动词常可用进行时表示位置移动的动词常可用进行时 态表将来。态表将来。 He is leaving on Wednesday. 他将于周三离开。他将于周三离开。 Mary isnt here at the moment. She is coming later. 玛丽现在不在这儿，她一会儿来。玛丽现在不在这儿，她一会儿来。

39、现在进行时现在进行时-用法用法 I called you at 4:00 yesterday afternoon, but no one answered. Sorry, I _ with my friends at that time. (2011河南河南) A. swim B. swam C. will swim D. was swimming考点例析考点例析【考点点拨考点点拨】 过去进行时表示过去某一时刻或某阶过去进行时表示过去某一时刻或某阶 段正在进行的动作，其谓语由段正在进行的动作，其谓语由“was / were + 现在分词现在分词”构成。构成。 常与过去进行时连用的时间状语有：常

40、与过去进行时连用的时间状语有： then, at that time, this time yesterday, at ten yesterday等。等。 用括号内所给动词的适当形式填空。用括号内所给动词的适当形式填空。 1. Id like to introduce my best friend to you, Peter. Thank you, Lucy. But we _ (meet) already. 2. Look at these stamps. I _ (keep) them for five years. Wow, they are wonderful.have methave

41、 kept肯定句：肯定句：主语主语 + have / has + 过去分词过去分词 + 其他其他否定句：否定句：主语主语 + havent / hasnt + 过去分过去分 词词 + 其他其他一般一般 Have / Has + 主语主语 + 过去分词过去分词 + 疑问句：疑问句：？肯定答语：肯定答语：Yes, 主格代词主格代词 + have / has.否定答语：否定答语：No, 主格代词主格代词 + havent / hasnt.现在完成时现在完成时-构成构成1. 表示动作到现在为止已经完成或刚刚完成。表示动作到现在为止已经完成或刚刚完成。2. 动作发生在过去，强调对现在的结果、动作发生在过

42、去，强调对现在的结果、 影响等。影响等。3. 表示动作发生在过去，并且一直持续到现表示动作发生在过去，并且一直持续到现在，甚至还可能继续下去，句中使用持续性在，甚至还可能继续下去，句中使用持续性动词，且常有表示一段时间的时间状语。动词，且常有表示一段时间的时间状语。4. 现在完成时可以用在条件或时间状语从句现在完成时可以用在条件或时间状语从句中，表示将来某个时刻之前已经完成的动作。中，表示将来某个时刻之前已经完成的动作。现在完成时现在完成时-用法用法 1) 现在完成时现在完成时 + since + 点时间状语点时间状语(名词、短语、从句，其中从句用一名词、短语、从句，其中从句用一般过去时般过去

43、时) 2) 现在完成时现在完成时 + for + 段时间状语段时间状语 3) It / This is the first / 其他序数词其他序数词 / last time + that 从句中，从句使用从句中，从句使用现在完成时。现在完成时。1) Mary has been ill since three days ago. 2) Mary has been ill for three days. 3) It is the first time that I have visited the city.This is the best film that Ive (ever) seen. 现

44、在完成时现在完成时-句型句型时态时态一般现在时一般现在时一般过去时一般过去时现在进行时现在进行时过去进行时过去进行时一般将来时一般将来时现在完成时现在完成时用法用法表示经常性发生的表示经常性发生的动作、习惯性动作动作、习惯性动作或客观真理、科学或客观真理、科学事实等。事实等。表示过去某个时表示过去某个时间发生的动作或间发生的动作或存在的状态。存在的状态。表示现在或现表示现在或现阶段正在进行阶段正在进行或发生的动作。或发生的动作。表示过去某时正表示过去某时正在进行的动作或在进行的动作或存在的状态。存在的状态。表示将来某个时表示将来某个时间要发生的动作间要发生的动作或存在的状态。或存在的状态。表示

45、过去发生或表示过去发生或者未发生的事对者未发生的事对现在造成的影响现在造成的影响或结果。或结果。 构成构成方式方式1. 动词动词be(am/is/are) + 表语表语2. 动词原形动词原形 + (主语是第三人称主语是第三人称单单数，动词也用第三数，动词也用第三人称单数人称单数)1. 动词动词was/were + 表语表语2. 实义动词的过实义动词的过去式去式 + be(am/is/are) + 动词的现在动词的现在分词分词was / were + 动词动词的现在分词的现在分词1. will/shall + 动动词原形词原形(shall 用于第一用于第一人称人称)2. be going to

46、+ 动词原形动词原形主语主语 + have / has + 过去分词过去分词 + 句句型型变变化化疑疑问问式式1. Be + 主语主语 + ?2. Do/Does + 主语主语 +动词原形动词原形+ ?1. Was/Were + 主主语语 + ?2. Did + 主语主语 + 动词原形动词原形 + ?Be + 主语主语 + 动动词的现在分词词的现在分词 + ?Was / Were + 主主语语 + 动词的现在动词的现在分词分词 + ？1. Will/Shall + 主语主语 + 动词原形动词原形+ ?2. Be + 主语主语+ going to + 动词动词原形原形 + ?Have / Has

47、 + 主主语语 + 过去分词过去分词 + ？否否定定式式1. 主语主语 + be + not + 2. 主语主语+dont/doesnt + 动词原形动词原形 + 1. 主语主语 + was/were + not +2. 主语主语 + didnt + 动词原形动词原形 + 主语主语 + be + not + 动词的现在动词的现在分词分词 + 主语主语 + wasnt (was not) / werent (were not) + 动词的现动词的现在分词在分词 + 1. 主语主语 + will/shall not + 动词原形动词原形 + 2. 主语主语 + be + not + going t

48、o + 动词原形动词原形 + 主语主语 + havent / hasnt + 过去分过去分词词 + 用括号内所给动词的适当形式填空。用括号内所给动词的适当形式填空。1. The Secondary School Entrance Exams _ (hold) in June.2. A strange noise _ (hear) by his mother last night.3. A wide road _ (build) between the two villages by those people next year. is heldwas heardwill be built被动语

49、态表示主语是谓语动作的承受被动语态表示主语是谓语动作的承受者，者，被动语态被动语态由由“be + 过去分词过去分词”构成。构成。be随着主语人称和数以及时态的不同而随着主语人称和数以及时态的不同而变化。含有情态动词的被动语态由变化。含有情态动词的被动语态由“can / must / may / should + be + 过去分词过去分词”构成。构成。被动语态被动语态The first section of New College English is designed for speaking practiceand is based on pictures and topics.These

50、 computers were made in our own country last year.Shall we be asked to attend the opening ceremony?一般现在时的被动语态一般现在时的被动语态：am/is/are + 过去分词过去分词 一般过去时的被动语态一般过去时的被动语态：was/were+过去分词过去分词 一般将来时的被动语态一般将来时的被动语态：will/shall+be+过去分词过去分词 1. 有些动词可以有两个宾语，在用于被有些动词可以有两个宾语，在用于被动结构时，可以把主动结构中的一个宾动结构时，可以把主动结构中的一个宾语变为主语，另

51、一宾语仍然保留在谓语语变为主语，另一宾语仍然保留在谓语后面。通常变为主语的是间接宾语后面。通常变为主语的是间接宾语(指人指人的宾语）。的宾语）。一些特殊的被动语态一些特殊的被动语态They didnt offer Ann the job. Ann wasnt offered the job. 2. 在使役动词在使役动词have, make, get以及感官以及感官动词动词see, watch, notice, hear, feel, observe等后面不定式作宾语补语时，等后面不定式作宾语补语时，在主动结构中不定式在主动结构中不定式to要省略，但变为要省略，但变为被动结构时，要加被动结构时，

52、要加 to。They make her clean the floor. She is made to clean the floor by them.3. It + be + 过去分词过去分词 + that从句从句 (=主语主语+ be + 过去分词过去分词 + to do sth.)表示：据说表示：据说/据报道据报道/据悉据悉/据信等据信等据说这个男孩已经通过了这次全国性的据说这个男孩已经通过了这次全国性的测试。测试。It is said that the boy has passed thenational exam. The boy is said to have passed the

53、national exam.1. 某些感官动词加形容词及少数其他的某些感官动词加形容词及少数其他的动词本身可以表示被动意义。动词本身可以表示被动意义。smell, taste, prove, sell, etc.1) The dish tastes delicious. 2) The theory proved right at last.3) The book is so interesting that it sells well. 不可以变成被动语态的情不可以变成被动语态的情况况 need + V- ing 表示表示“主语承受动词发主语承受动词发 出的动作出的动作”，表示被动意义。，表示

54、被动意义。 我的车需要修理。我的车需要修理。 My car needs repairing. (= to be repaired). 战争爆发了。战争爆发了。The war broke out.但不能说：但不能说：The war was broke out.3. 通常只有及物动词（组）才有被动通常只有及物动词（组）才有被动语态，不及物动词没有。语态，不及物动词没有。 “be + 过去分词过去分词”这个结构并不都是被这个结构并不都是被动语态，也可能是系表结构。被动语态动语态，也可能是系表结构。被动语态与系表结构主要区别是与系表结构主要区别是：被动结构表示被动结构表示一个动作，而系表结构表示主语的

55、特点一个动作，而系表结构表示主语的特点或所处的状态，或所处的状态，试比较下面的句子：试比较下面的句子：被动结构与系表结构的区别被动结构与系表结构的区别The enemy was soon surrounded by us.The house is surrounded by trees.She was bitten by the dog in the darkness. I was excited by the news that my husbandgot promoted.被动结构被动结构系表结构系表结构被动结构被动结构 系表结构系表结构时态时态主动语态主动语态被动语态被动语态一般现在时一

56、般现在时 do / doesam / is / are + done一般过去时一般过去时 didwas / were + done一般将来时一般将来时 will / be going to + dowill / be going to + be + done一般现在时、一般过去时和一般将来时一般现在时、一般过去时和一般将来时的主动结构和被动结构的主动结构和被动结构 (以动词以动词do为例为例)： We can do it by ourselves. It must be Toms. Look at his name on the cover. 3.Im sorry. Children must

57、nt swim here. 4.May see you ID card, sir? 5.Will you pass me the book?指出下列划线动词的种类。指出下列划线动词的种类。情态动词情态动词 情态动词情态动词 情态动词情态动词 情态动词情态动词 情态动词具有一定的意义，但不能单独情态动词具有一定的意义，但不能单独作谓语，其后需接动词原形一起构成句子作谓语，其后需接动词原形一起构成句子的谓语。情态动词的谓语。情态动词(除除have to以外以外)没有人没有人称和数的变化。另外，情态动词可用来构称和数的变化。另外，情态动词可用来构成否定句、疑问句并进行简略回答。初中成否定句、疑问句并

58、进行简略回答。初中常见的情态动词有：常见的情态动词有：can, may, must, need, have to, could, should, ought to 等。等。考点一：考查表示考点一：考查表示“能力能力”的情态动词的情态动词 1. _ your Australian friend eat with chopsticks? Yes, but she cant use them well. A. Should B. Need C. Can D. Must2. The work is too hard for us. We _ finish it on time. A. cant B.

59、mustnt C. shouldnt D. neednt 情态动词情态动词考点考点3. Could your father play golf when he was young? No, he _. But he _ play table tennis. A. couldnt; could B. neednt; might C. mustnt; should D. shouldnt; need 【考点点拨考点点拨】 情态动词情态动词can表示表示“能力能力”时，与时，与be able to同义，其否定形式为同义，其否定形式为cant。can表示现在的能力，其过去式表示现在的能力，其过去式co

60、uld表示过表示过去的能力。去的能力。考点二：考查表示考点二：考查表示“应该应该”的情态动词的情态动词 1. _ weto finish our homework before noon? Yes, you _. A. Need; can B. Have; do C. Ought; ought to D. Should; must2. You _ study hard if you want to be a scientist in the future. A. may B. should C. would D. could 【考点点拨考点点拨】 情态动词情态动词should和和ought to都可表