情态动词 (5)

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1、GrammarGrammarTwo eyes can see more than one.I am so strong that I can lift this stone.He said that Jack couldnt finish his work in such a short time.He is only four,but he is able to read.She was able to do it without my help.Will you be able to come to my party tomorrow?表能力表能力can couldbe able to 有

2、时态变化有时态变化You can go now.Could I say it in Chinese?May I know your name?Would you mind closing the door?Shall we dance?Might I have a word with you?语语气气强强 弱弱表许可表许可,征征询意见询意见can,willcould/may/would/shall/mightThere must be a mistake.You may walk ten miles without seeing a house.He might get there on ti

3、me.It can be true.In those days few workers could support their families.表可能性表可能性(猜猜测测)must may,might,can,could肯定句肯定句语语气气强强 弱弱语语气气强强 弱弱She cant be serious.We couldnt have done better.People may not pick flowers in this garden.She was afraid they might not like the idea.表不可能表不可能表不可能表不可能(猜测猜测猜测猜测)cant

4、,couldntmay not,might not否定句否定句mustnt,shouldnthad better notWe mustnt waste our time.They shouldnt left so soon.Youd better not disturb him.表禁止表禁止You should do what your parents tell you.If you cant finish the book by then,you must come and renew it.This is a lovely party,but we have to go because o

5、f the baby.The bridge was not wide enough so that somebody had to give way.should,musthave to表义务表义务(应应该该)有时态变化有时态变化翻译下列句子翻译下列句子,体会情态动词的不同用法体会情态动词的不同用法:1.Tom,you mustnt leave all your clothes on the floor like this!2.He must have completed his homework;otherwise,he couldnt be enjoying himself by the

6、seaside.(表示禁止表示禁止,意为意为“不许不许”)(must+have+过去分词过去分词,表示对过去表示对过去事情肯定的推测事情肯定的推测)3.Helen may go on the trip with us,but she isnt quite sure yet.4.-Isnt that Anns husband over there?-No,it cant be himIm sure he doesnt wear glasses.(表示可能性表示可能性,意为意为“可能可能”)(对目前状态表示否定推测对目前状态表示否定推测,意为意为“不可能不可能”)5.I often see lig

7、hts in that empty house.Do you think I should report it to the police?6.Children under 12 years old in that country must be under adult supervision when in a public library.(表示应该表示应该)表示义务或必要表示义务或必要,意为意为“必须必须”7.-Who is the girl standing over there?-Well,if you must know,her name is Susan.表示主张表示主张,意为意

8、为“一定要一定要”8.You cant imagine that a gentleman should be so rude to a lady.表示吃惊表示吃惊,意为意为“竟然会竟然会”9.There must be some reasons for his absence.10.-Need I do the experiment again after class?-Yes,you must.(No,you neednt)(表示对现在事情的推测表示对现在事情的推测)need引起的疑问句肯定回答用引起的疑问句肯定回答用must.Practice1.That must be a mistake

9、.No,it _ a mistake.2.A.must not be B.neednt be 3.C.cannot be D.would not be 4.2._ I water the trees on Tuesday?No,you neednt.A.Can B.Must C.May D.Shall 3.He _ not pay unless he is punished to pay.A.shallB.will C.can D.would 4.Since the road is wet this morning,_ last night.A.it must rain B.it must h

10、ave rained C.it must be rained D.it must have been rained 5.Lets go to the library this afternoon,_?A.shall weB.will we C.can we D.should we 6.Where are my keys?I _ lost them.A.ought to B.should have C.will have D.must have 7.Even if he has time,he _ shopping in town on Sunday.A.wont go B.will go C.

11、wont go to D.doesnt go 9.He _ finished earlier.A.shall have B.ought to C.could have D.must have 10.In case I _,I would try again.A.will fail B.would miss C.should fail D.shall miss 13.Everyone _ do his best to make the world safe and clean.A.can B.may C.should D.had to14._ to have lunch with us toda

12、y?A.Do you like B.Would you like C.Will you like D.Have you like 15.Will you lend me your book?Yes,I _.A.will B.need C.can D.must 16.If I had time,_ see that new movie at the Capital Theater.A.I will B.I may C.I shall D.I would 17.The English of her composition is too good.She cant _ it herself.A.ha

13、ve to write B.have written C.write D.be written 18.You _ the look on his face when he won the lottery.A.would have seen B.can be seeing C.must see D.may see 19.The light is out in her room;she _ to bed.A.must have gone B.had gone C.must be going D.must go 20.They _ that far;but they stopped to have

14、a snack on the way.A.might be gone B.needed go C.could have gone D.ought have gone 21.As physics is hard enough,I _ study it.A.am not able B.couldnt C.am not able to D.cannot 22.You _ to the meeting this morning if you have something important to do.A.neednt to come B.dont need come C.dont need comi

15、ng D.neednt come Correct the mistakes and say why.John shoulds go to school on time.At that time we thought we musted hand in our paper.You must to finish your homework in time.We dont can be there tomorrow.They should may do that.shouldmustcantshould/may从方框中选择合适的情态动词并用其适从方框中选择合适的情态动词并用其适当形式（包括否定式）填

16、空。当形式（包括否定式）填空。must,can,may,ought to,have to,should1.He _ tell a lie,because he is an honest boy.2.The last bus has gone.We _ take a taxi.3.Harrys been driving all day he _ be tired.musthave tocant4.I knew things are hard with you,but you _ try to get over the difficulties.5.The girl _ know the trut

17、h,but I am not sure.maymust/ought to/should高考链接高考链接1.I often see lights in that empty house.Do you think I _ report it to the police?(2004全国卷全国卷III)A.should B.may C.will D.can2.Tom,you _ leave all your clothes on the floor like this!(2005全国卷全国卷I)A.wouldnt B.mustnt C.neednt D.may notAB3.Is Jack on du

18、ty today?No,it _ be him.Its his turn tomorrow.(四川四川2006)A.mustnt B.wont C.cant D.neednt4.Liza _ well not want to go on the trip she hates traveling.(2008全国卷全国卷II)A.will B.can C.must D.mayCD5.Must we finish copying all these articles this morning?No,you _.A.mustnt B.havent C.not have to D.dont have to D