高中英语情态动词课件.pptx

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1、会计学1高中英语情态高中英语情态(qngti)动词课件动词课件第一页，共27页。情态动词的基本用法特点情态动词的基本用法特点1） 情态动词情态动词 除除 ought 和和 have 外，后面只能外，后面只能接动词接动词 原型。原型。2） 情态动词没有人称，数的变化情态动词没有人称，数的变化(binhu)，即情态动词第即情态动词第 三人称单数不加三人称单数不加-s。3） 情态动词没有非谓语形式，即没有不定式情态动词没有非谓语形式，即没有不定式，分，分 词，等形式。词，等形式。 第1页/共27页第二页，共27页。高中阶段都学过哪些情态高中阶段都学过哪些情态(qngti)动词呢动词呢1 can /

2、could / be able to2 may/might3 must / have to4 shall / should5 will / would6 need / dare7 ought to第2页/共27页第三页，共27页。1 can / could / be able to1 Some of us can use computers now, but we couldnt last year.（能力）（能力）2 It will be sunny in the day time ,but it can rain later on this evening（客观可能性）（客观可能性）3 -

3、Can I go now ? yes ,you can （请求和允许）（请求和允许）4 Could you wait a few days for the memory?（请求）（请求）5 1 Can this news be true? 2 It cant be our headmaster.he has gone to Beijing.（表推测，主要（表推测，主要(zhyo)用于否定和疑问）用于否定和疑问）第3页/共27页第四页，共27页。 *be able to 能用于各种时态。能用于各种时态。 can / could 只能表示现在只能表示现在(xinzi)或过去的能力。或过去的能力。

4、*was / were able to : “设法做成某事设法做成某事” 相当于相当于 managed to do sth. succeeded in doing sth.。1. can 与与be able to 有何区别有何区别(qbi)？第4页/共27页第五页，共27页。1. A computer _ think for itself; it must be told what to do. A. cant B. couldnt C. may not D. might not2. The fire spread through the hotel very quickly but ever

5、yone _ get out. A. had to B. would C. could D. was able toA A D D 3. They will _ run this machine on their own in three months.A. can B. could C. may D. be able toD D 第5页/共27页第六页，共27页。2 may / might1 May I watch Tv after supper? Yes you may /No ,you mustnt.（请求（请求(qngqi)许可许可)2 It may be true ./ she ma

6、y come tomorrow/ He might have some fever（推测）（推测）3 May you succeed ! May you have many more days as happy as this one（祝愿）（祝愿）may/ might as well 还是还是(hi shi) -好好we may as well stay where we are第6页/共27页第七页，共27页。5. Could I borrow your dictionary? Yes, of course you _. A. might B. will C. can D. should6

7、. Might I watch TV after supper? Yes, you _. A. may B. must C. might D. canC C A A 第7页/共27页第八页，共27页。3 must 语语 have to 的的 用法用法(yn f)1 You must come to school on time .You mustnt waste any more time（必须（必须(bx),禁止）禁止）2 Must I come back before ten ? Yes ,you must. No, you neednt./ dont have to3 It must b

8、e our headteacher. You must be hungry after a long walk.（推测（推测(tuc)4 I really must go now. I have to go now,because my mother is in hospital.( 不得不）不得不）第8页/共27页第九页，共27页。He must be reading, _ he?You must do it yourself, _ you?He must have gone over the article, _he?It must have rained last night, _ it

9、?3、表推测、表推测(tuc)语气的反意疑问句的构语气的反意疑问句的构成成isntdonthasntdidnt另外另外must 还有偏偏一定还有偏偏一定(ydng)要的意思要的意思why must you play the piano while othersare sleeping.第9页/共27页第十页，共27页。7. You _ return the book now. You can keep it till next week if you like. A. cant B. mustnt C. neednt D. may not8. Johnny, you _ play with t

10、he knife, you _ hurt yourself. A. wont ; cant B. mustnt ; may C. shouldnt ; must D. cant ; shouldntC C B B 第10页/共27页第十一页，共27页。9. -Will you stay for lunch? -Sorry, _. My brother is coming to see me. A. I mustnt B. I cant C. I neednt D. I wont10. -May I pick a flower in the garden? - _. A. No, you nee

11、dnt B. Not, please. C. No, you mustnt D. No, you wontB B C C 第11页/共27页第十二页，共27页。4 shall 与与 should1用于一，三人称疑问句表示征求对方用于一，三人称疑问句表示征求对方(dufng)的意见的意见和和 向对方向对方(dufng)请示请示 Shall the driver wait ?What shall we do next ?2 用于用于 二二 三人称三人称(rnchng)陈述句表示命令警告，允诺，陈述句表示命令警告，允诺，威胁以及法律条文规定威胁以及法律条文规定You shall go with me

12、 / He shall be punished You shall have the book when I finish itAll the children shall go to school at the age of seven.第12页/共27页第十三页，共27页。3表示劝告表示劝告(qungo)和建议和建议You should study hard.4 表推测表推测(tuc)They should have arrived by two oclock5用于用于if 条件句表示条件句表示(biosh)万一万一Ask Tom to ring me up if you should s

13、ee him.Shoud I be free tomorrow ,I will come.6 表竟然表竟然I dont know why you should be so rude to your mother第13页/共27页第十四页，共27页。Toms father promised, “You _have a new computer if you pass the coming examination,” A.can B.should C.shall D.mayC第14页/共27页第十五页，共27页。B 第15页/共27页第十六页，共27页。C第16页/共27页第十七页，共27页。5

14、will 与与 would 的用法的用法(yn f)1 表示表示(biosh)意志和意愿意志和意愿I will never do it again.They said that they would help us.2 表请求表请求(qngqi)，建议，建议Will you please take a message for me?Would you please pass him the book?3 表功能表功能This machine wont work.4 表示习惯性动作与表示习惯性动作与used to有何区别有何区别Fish will die without water.Every

15、evening ,he would sit by the window.第17页/共27页第十八页，共27页。6 need 语语 dare的用法的用法(yn f)既可做实意动词又可做情态动词。做情态动词用于既可做实意动词又可做情态动词。做情态动词用于否定和疑问句而做实意动词可用于肯定否定和疑问句而做实意动词可用于肯定(kndng)，否定疑问，否定疑问How dare you say such a thing?How dare you to say such a thing?He darent to speak English before such a crowd, did he?He dar

16、ent speak English before such a crowd, dare he?第18页/共27页第十九页，共27页。C第19页/共27页第二十页，共27页。7 ought to 的的 用法用法(yn f)1 表应该表应该(ynggi)与与 should 的的 区别区别You ought to take care of him.You are his father .You ought to get him to receive good education2 表推测表推测(tuc)He ought to be home by now.He must be home by now

17、.第20页/共27页第二十一页，共27页。一一 情态动词情态动词+ 完成完成(wn chng)时表对过去的推测时表对过去的推测1 must have done（仅用于肯定句（仅用于肯定句)2 cant /couldnt have done(用于否定疑问句）用于否定疑问句）3 may have done （肯定，否定均可（肯定，否定均可)4 might have done（肯定，否定均可（肯定，否定均可)二二 表虚拟表虚拟(xn)1 should / could /would /might have done三三 neednt have done would rather have done had better have done 第21页/共27页第二十二页，共27页。A第22页/共27页第二十三页，共27页。D第23页/共27页第二十四页，共27页。D第24页/共27页第二十五页，共27页。CDD第25页/共27页第二十六页，共27页。D第26页/共27页第二十七页，共27页。