《湖北省荊州市沙市第五中學(xué)八年級(jí)英語(yǔ)下冊(cè) Unit 3 Could you please clean your room課件2 （新版）人教新目標(biāo)版》由會(huì)員分享，可在線閱讀，更多相關(guān)《湖北省荊州市沙市第五中學(xué)八年級(jí)英語(yǔ)下冊(cè) Unit 3 Could you please clean your room課件2 （新版）人教新目標(biāo)版（42頁(yè)珍藏版）》請(qǐng)?jiān)谘b配圖網(wǎng)上搜索。

1、enjoy dinner with my family.A: Mum, could I go out for dinner with my friends?B: Sure, that should be OK.A: Could I get something to drink with my friends after the movie?B: Sure, you can.A: Could I get something to drink with my friends after the movie?B: No, you cant, you have a basketball game to

2、morrow.take the dog for a walk遛狗遛狗A: Can you please take the dog for a walk?B: OK, but I want to watch one show first.take out the rubbish扔垃圾扔垃圾A: Can you please take out the rubbish?B: Yes, sure.Could I go out for dinner with my friends?Sure, that should be OK.Could we get something to drink after

3、the movie?No, you cant, you have a basketball game tomorrow.Grammar FocusCan you please take the dog for a walk?OK, but I want to watch one show first.Can you please take out the rubbish?Yes, sure.只作情態(tài)動(dòng)詞的只作情態(tài)動(dòng)詞的 can / could, may / might, ought to, must可情態(tài)可實(shí)義的可情態(tài)可實(shí)義的 need, dare 可情態(tài)可助動(dòng)詞的可情態(tài)可助動(dòng)詞的 shall

4、 / should, will / would相當(dāng)于情態(tài)動(dòng)詞的相當(dāng)于情態(tài)動(dòng)詞的 have to, used to情態(tài)動(dòng)詞的語(yǔ)法特征情態(tài)動(dòng)詞的語(yǔ)法特征1) 情態(tài)動(dòng)詞不能單獨(dú)做謂語(yǔ)情態(tài)動(dòng)詞不能單獨(dú)做謂語(yǔ), 除除ought和和have外外, 后面只能接不帶后面只能接不帶to的不定式。的不定式。 2) 情態(tài)動(dòng)詞沒(méi)有人稱情態(tài)動(dòng)詞沒(méi)有人稱, 數(shù)的變化數(shù)的變化, 但有些情但有些情態(tài)動(dòng)詞態(tài)動(dòng)詞, 如如can、will也有一般式和過(guò)去式也有一般式和過(guò)去式的變化。的變化。3) 情態(tài)動(dòng)詞的情態(tài)動(dòng)詞的“時(shí)態(tài)時(shí)態(tài)”形式并不是時(shí)間區(qū)別形式并不是時(shí)間區(qū)別的主要標(biāo)志的主要標(biāo)志, 不少情況下不少情況下, 情態(tài)動(dòng)詞的現(xiàn)在式情態(tài)動(dòng)

5、詞的現(xiàn)在式形式和過(guò)去式形式都可用來(lái)表示現(xiàn)在時(shí)間、形式和過(guò)去式形式都可用來(lái)表示現(xiàn)在時(shí)間、過(guò)去時(shí)間和將來(lái)時(shí)間。過(guò)去時(shí)間和將來(lái)時(shí)間。 1) can的主要用法是：的主要用法是： A. 表示體力或腦力的能力：表示體力或腦力的能力： e.g. The girl can dance very well. B. 表示說(shuō)話的推測(cè)表示說(shuō)話的推測(cè)事物的可能性等事物的可能性等: e.g. Can the news be true? C. 在口語(yǔ)中在口語(yǔ)中, can可以表示請(qǐng)求或允許可以表示請(qǐng)求或允許: e.g. Can I sit here? can 和和could：can表示表示“能夠能夠”時(shí)與短語(yǔ)時(shí)與短語(yǔ)be a

6、ble to同義同義，但但can只用于一般現(xiàn)在時(shí)或過(guò)去時(shí)只用于一般現(xiàn)在時(shí)或過(guò)去時(shí)，而，而后后者可用于各種時(shí)態(tài)者可用于各種時(shí)態(tài)。另外，。另外，can表示個(gè)人表示個(gè)人有某種能力，而有某種能力，而be able to表示某人通過(guò)努表示某人通過(guò)努力、克服困難做成某事，相當(dāng)于力、克服困難做成某事，相當(dāng)于succeed in doing sth.；敘述過(guò)去事實(shí)時(shí)，最好用；敘述過(guò)去事實(shí)時(shí)，最好用was / were able to，因?yàn)?，因?yàn)閏ould只表示過(guò)去具有只表示過(guò)去具有某種能力。某種能力。如：如：Can you understand the different kinds of English t

7、hese people are using?Two years later, he was able to speak very good Chinese.2) could的主要用法是：的主要用法是： A. could 是是can的過(guò)去式的過(guò)去式, 表示與過(guò)表示與過(guò)去去 有關(guān)的能力和推測(cè)有關(guān)的能力和推測(cè): e.g. We all knew that the young man couldnt be a doctor. B. could可以代替可以代替can表示請(qǐng)求表示請(qǐng)求, 但語(yǔ)但語(yǔ)氣較氣較can客氣、委婉客氣、委婉: e.g. Could you lend me your dictionar

8、y? Could I use your bike? 3) can和和could接動(dòng)詞的完成形式，表接動(dòng)詞的完成形式，表示可能已經(jīng)做某事。示可能已經(jīng)做某事。can用在否定和疑用在否定和疑問(wèn)句中問(wèn)句中, 表示不相信、懷疑等態(tài)度。表示不相信、懷疑等態(tài)度。 e.g. They cant have gone out because the light is still on.以以could或或would提問(wèn)時(shí)，不能再以提問(wèn)時(shí)，不能再以could或或would作答，而應(yīng)該用作答，而應(yīng)該用can或或will。如：如：Could I borrow your dictionary?Yes, of course

9、you can.情態(tài)動(dòng)詞用法小結(jié)情態(tài)動(dòng)詞用法小結(jié)1. 情態(tài)動(dòng)詞不能表示正在發(fā)生或已經(jīng)發(fā)情態(tài)動(dòng)詞不能表示正在發(fā)生或已經(jīng)發(fā)生的事情生的事情, 只表示期待或估計(jì)某事的發(fā)只表示期待或估計(jì)某事的發(fā)生。生。2. 情態(tài)動(dòng)詞除情態(tài)動(dòng)詞除ought 和和have 外外, 后面只能后面只能接不帶接不帶to 的不定式。的不定式。3. 情態(tài)動(dòng)詞沒(méi)有人稱，數(shù)的變化，即情態(tài)動(dòng)詞沒(méi)有人稱，數(shù)的變化，即情態(tài)動(dòng)詞第三人稱單數(shù)不加情態(tài)動(dòng)詞第三人稱單數(shù)不加-s。4. 情態(tài)動(dòng)詞沒(méi)有非謂語(yǔ)形式，即沒(méi)有情態(tài)動(dòng)詞沒(méi)有非謂語(yǔ)形式，即沒(méi)有不定式、分詞等形式。不定式、分詞等形式。 could與與can的區(qū)別的區(qū)別 could與與can都是情態(tài)動(dòng)

10、詞都是情態(tài)動(dòng)詞, could是是can的過(guò)去式。二者都可用于表示請(qǐng)的過(guò)去式。二者都可用于表示請(qǐng)求求, 但是用法稍有不同。但是用法稍有不同。 can 表示一般性的請(qǐng)求，語(yǔ)氣隨便表示一般性的請(qǐng)求，語(yǔ)氣隨便, 常用于常用于熟人之間或長(zhǎng)輩對(duì)晚輩熟人之間或長(zhǎng)輩對(duì)晚輩, 上級(jí)對(duì)下級(jí)的上級(jí)對(duì)下級(jí)的場(chǎng)合。場(chǎng)合。 e.g. Can you tell us your story, Tony ? Tony，你能給我們講講你的故事嗎？，你能給我們講講你的故事嗎？ could表示有禮貌的請(qǐng)求，語(yǔ)氣委婉，表示有禮貌的請(qǐng)求，語(yǔ)氣委婉， 常用于非熟人之間或晚輩對(duì)長(zhǎng)輩，下級(jí)常用于非熟人之間或晚輩對(duì)長(zhǎng)輩，下級(jí) 對(duì)上級(jí)的場(chǎng)合。比如

11、：對(duì)上級(jí)的場(chǎng)合。比如： -Could you tell us if it snows in winter in Australia? -Sure. -請(qǐng)告訴我們請(qǐng)告訴我們, , 澳大利亞冬天下雪嗎澳大利亞冬天下雪嗎? ? -當(dāng)然可以。當(dāng)然可以。 注意：注意：1. 提出委婉的請(qǐng)求在回答中不可提出委婉的請(qǐng)求在回答中不可用用could。A: Could I have the television on?B: Yes, you can. / No, you cant.2. 在否定、疑問(wèn)句中表示推測(cè)或懷疑用在否定、疑問(wèn)句中表示推測(cè)或懷疑用couldnt。 He couldnt be a bad man.

12、 他不大可能是壞人。他不大可能是壞人。 may和和might 表示允許或請(qǐng)求表示允許或請(qǐng)求; 表示沒(méi)有把握的推測(cè)表示沒(méi)有把握的推測(cè); may放在句首放在句首, 表示祝愿。表示祝愿。 May God bless you! He might be at home.注意注意: might 表示推測(cè)時(shí)表示推測(cè)時(shí), 不表示時(shí)態(tài)，只是可不表示時(shí)態(tài)，只是可能性比能性比may小。小。1. 兩詞都是兩詞都是 “必須必須”的意思的意思, have to 表示客觀的需要表示客觀的需要, must 表示表示 說(shuō)話人主觀上的看法說(shuō)話人主觀上的看法, 既主觀既主觀 上的必要。上的必要。 have to和和must My

13、brother was very ill, so I had to call the doctor in the middle of the night. 我弟弟病得很厲害，我只得半夜里我弟弟病得很厲害，我只得半夜里把醫(yī)生請(qǐng)來(lái)。把醫(yī)生請(qǐng)來(lái)。(客觀上需要做這件事客觀上需要做這件事)He said that they must work hard. 他說(shuō)他們必須努力工作。他說(shuō)他們必須努力工作。 (主觀上要做這件事主觀上要做這件事)2. have to 有人稱、數(shù)、時(shí)態(tài)的變化有人稱、數(shù)、時(shí)態(tài)的變化,而而must只有一種形式。但只有一種形式。但must 可用可用于間接引語(yǔ)中表示過(guò)去的必要或義于間接引語(yǔ)

14、中表示過(guò)去的必要或義務(wù)。務(wù)。 He had to look after his sister yesterday.3. 在否定結(jié)構(gòu)中在否定結(jié)構(gòu)中: dont have to 表示表示 “不必不必”, mustnt 表示表示“禁止禁止”。 You dont have to tell him about it. 你不一定要把此事告訴他。你不一定要把此事告訴他。 You mustnt tell him about it.你一定不要把這件事告訴他。你一定不要把這件事告訴他。4a. Write R for requests and P for permissions. Then match each o

15、ne with the correct response. 1._ Could I hang out with my friends after the movie?2. _Could you please pass me the salt?3._Could I borrow that book?4._Could you help me do the dishes? 5._Could you lend me some money?PRPRRa.Yes, here you are.b. Hmm. How much do you need?c.Yes, sure. No problem. I fi

16、nished reading it last night.d. Yes, but dont come back too late.e. No, I cant I cut my finger and Im trying not to get it wet.1d 2-a 3-c 4-e 5-b4b Fill in the blanks in the conversationA: I hate to_ chores.B: Well, I hate some chores too, but I like other chores.A: Really? Great! _I ask you to_ me

17、with some chores then?B: What do you need help with ? A: _ you please _my clothes for me?B: I dont want to do that! Its boring!Could dohelpCould foldA: OK. Then_ you _do the dishes for me?B: Sure, no problem. But_ we go to the movies after that?A: Sure, Ill finish my homework while you help me with

18、the dishes. Then we can go to the movies.couldpleasecould4c Make a list of things your group needs to do for a camping trip. Then discuss who will do bring a tent them and complete the chart.A: Could you please bring Liu Chang?B: Sure. And could you please ?C: Sorry, I cant. I have toTodo list Name

19、Bring a tentLiu Chang Pair work用情態(tài)動(dòng)詞用情態(tài)動(dòng)詞can/could, cant, may,must, mustnt , neednt填空。填空。 1. - _ you come and play with us now? - Im afraid I _. I _ do the cooking. I _ come later.2. - _ we clean the windows today? - No, you _. You _ clean them tomorrow. CouldcantmustcanMustneedntcan3. - _ I watch T

20、V this evening, mum? - No, you _. Work _ come first.4. - _ I come in, please? -Yes, please.5. Excuse me. _ you tell me the way to the cinema?MaymustntmustCanCanA: Could you help me, please?B: _!A: I want to _these boxes to my home Lets _ the boxes _ the car now.B: _right.A: Oh, the box _ heavy. Can

21、you carry it?B: Yes, I_A: _you _ it to my room?B: Certainly.完成對(duì)話完成對(duì)話CertainlytakeputinAlliscanCouldtakecan; couldWhen I was young I _ climb any tree in the forest.Learning a language _ be a real challenge.couldcan選用正確的情態(tài)動(dòng)詞填空。選用正確的情態(tài)動(dòng)詞填空。HOMEWORK 這個(gè)暑假你與父母要去法國(guó)去度假，這個(gè)暑假你與父母要去法國(guó)去度假， 你的寵物你的寵物小貓小貓Mimi需要請(qǐng)需要請(qǐng)Jimmy幫忙照顧。請(qǐng)用下面的幫忙照顧。請(qǐng)用下面的提示詞給提示詞給Jimmy寫份留言。寫份留言。 take care of, take for a walk, feed and give some water, play with him, cleanDear Jimmy, _. Li Ming