高考英語語法精講與精練 :第十章 情態(tài)動詞與虛擬語氣
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1、高考英語語法精講與精練 :第十章 情態(tài)動詞與虛擬語氣 高考英語 第十章 情態(tài)動詞與虛擬語氣精講與精練 一、情態(tài)動詞與虛擬語氣講前練:用所給單詞的適當形式填空 Tom: Hi,Mr.Smith.[1] you give me a hand? Mr.Smith: Of course. You [2] hesitate to ask me for help. What’s the matter with you? Tom: My mum is always complaining about my going back home late after school.
2、Mr.Smith: What do you usually do after school? Tom: I usually go to the playground to play basketball. But I know that I [3] go home first. Mr.Smith: Why don’t you go home directly? Tom: My mother usually says,“Every student [4] do their homework first after school, and that is a rul
3、e for all of you students.”You see, if I [5] (do)my homework first now, I couldn’t have a rest and relax. I am so tired. Mr.Smith:Both you and your mum are reasonable. As a mother, she believes that you [6] never work too hard, while you think you need some time to have a rest. Does you
4、r mother know what you think? Tom: No. Even if I [7] (tell)her before, she wouldn’t have understood it. Mr.Smith: I don’t think you are right. I think you should tell your mother what you think and she would understand you. Besides, you had better not hide your feelings from your mother and
5、 you [8] as well learn to communicate with her. Tom: Thank you for your advice. It is high time I [9] (talk)with her. Mr.Smith: I [10] agree more. 1、Can 2、needn’t 3、should 4、shall 5、did 6、can 7、had told 8、might 9、talked 10、can’t 二、情態(tài)動詞考點精講: 情態(tài)動詞考點1、??嫉那閼B(tài)動詞 類 情態(tài)動詞
6、 含義 用法 例句 推 測 must 一定、肯定 只用于肯定句 You’re Tom’s good friend, so you must know what he likes best. can/could 可能、也許 用于否定句和問句,can’t/couldn’t表“不可能” It can’t be Mr Li, for he has gone to America. may/might 可能、也許 用于肯定句和否定句,may not/might not表“可能不” Your mother may /might not know the truth. 能力
7、 can/could 能夠 can只有現(xiàn)在和過去時 Mary can speak three languages. be able to 能夠 be able to有更多的形式(如:will be able to, have been ble to )。當成功地完成某一具體動作時,不用could而用was/were able to。這時was/were able to 相當于managed to,表示經(jīng)過一番努力,終于能夠完成某事。 He was able to go to the party yesterday evening in spite of the heavy ra
8、in 許可 can/could 可以 ①問句中用could/might更顯客氣和委婉。②肯定回答一般用can,顯得語氣肯定干脆。 --Could I come to see you tomorrow? -- Yes, you can. (No, I’m afraid not. ) may/might 可以 May I come in? 必 要 must 必須 表主觀要求,注意must提起的一般疑問句的肯定回答和否定回答的不同,見例句。 --Must we hand in our exercise books today? -- Yes, you must./ N
9、o, you don’t have to / you needn’t. have to 不得不 表客觀需求 It is raining heavily,so we have to stay at home. ought to 應該 與should用法同 Yong people should show respect for the old. should 應該 shouldn’t/oughtn’t to不應該 You are his father and ought to take care of him. 其他 need 需要 1)用作實義動詞后接to do
10、 2)用作情態(tài)動詞后接 do,只用于否定句和問句 You don’t need to do it yourself. dare 敢 She dare not go out alone at night. 情態(tài)動詞+完成時態(tài) 情態(tài)動詞 含義 例句 must have done 肯定做過/發(fā)生過 It must have rained last night,for the ground is wet. can’t/couldn’t have done 不可能做過某事 Mr. Smith can't have gone to Beijing,for I saw him
11、 in the library just now. may/might have done 可能已經(jīng)..... You might have read about it in the papers could have done 本來可以.....,本來能夠 I could have arrived on time,but I was held up by the traffic jam. Should have done 本應該做..... You should have finished the task yesterday. ought to have done 本
12、應該做..... needn’t have done 本沒有必要做某事但又做了 I needn't have bought so much wine—only five people came. 句型 can not/never.....too 無論怎么.....也不過分越.....越好 While crossing the street, you can never be too careful. Can not.....enough 情態(tài)動詞考點2、情態(tài)動詞后必須接動詞原形,在語法填空中,如果空格在主語和動詞原形之間,那么可能要填情態(tài)動詞。(也可能填do和will,sh
13、all的適當形式)例如: 1.What is acceptable in one country [1]be considered extremely rude in another. Key:may 2.He had no time or energy to play with his children or talk with his wife, but he [2]______ bring home a regular salary. Key:did 考點對練1 單項填空【雖然許多地區(qū)不考此題型,但依舊是掌握知識的很好的訓練方式】 1.【2020·天津卷單項填空】Jim sa
14、ys we ______ stay in his house as long as we leave it clean and tidy . A.must B.can C.need D.should Key: B【解析】考查情態(tài)動詞。句意:吉姆說我們可以住在他的房子里,只要我們保持它干凈整潔。A. must必須;B. can能,可以;C. need需要;D. should應該。根據(jù)后面的“as long as we leave it clean and tidy”可知,Jim許可我們待在他的房子里,即:我們”能,可以”待在他的房子里。故選B。 2.【2
15、020·天津卷單項填空】You ____________ have scolded him for his poor performance. After all, he had done his best. A.must B.should C.mustn’t D.shouldn't Key: D【解析】考查情態(tài)動詞+ have done。句意:你本不應該因為他表現(xiàn)不好而責罵他。畢竟,他已經(jīng)盡力了。根據(jù)前后句關(guān)系可知此處表示“本不該”是 shouldn't have done指做了本不該做的事,must have done表示對過去發(fā)生的事情的肯定性推測
16、;should have done表示應當做某事而實際上未做;mustn’t不和have done連用。故選D。 知識拓展: 1)must have done表示對過去事情的肯定推測,指“一定做過某事”,該結(jié)構(gòu)只用于肯定句: EG1. It must have rained last night, for the ground is wet.昨晚一定下雨了,因為地面還是濕的。 EG2. You must have been mad to speak to the servant.你和仆人說話,一定是發(fā)瘋了。 2)should have done意思是“本來應該做某事,而實際沒做。”
17、 3)shouldn't have done表示本來不應該做某事,而實際做了。含有指責對方或自責的含意. EG3.Tom, you are too lazy. The work should have been finished yesterday.湯姆,你太懶惰了,這項工作本來應該昨天就做完的。 EG4.Look, Tom is crying. I shouldn't have been so harsh on him.看,湯姆哭了,我本來不應該對他如此嚴厲。 3.【2018·北京】In today’s information age, the loss of data ______
18、___ cause serious problems for a company. A. need B. should C. can D. must Key:C【解析】考查情態(tài)動詞。句意:在今天的信息時代,數(shù)據(jù)的丟失有時會對一個公司造成嚴重的問題。數(shù)據(jù)丟失造成嚴重問題是客觀上會發(fā)生的情況,即“客觀可能性”,故該空應用情態(tài)動詞can。C選項正確。其余情態(tài)動詞均沒有該用法。need需要;should應該,竟然;must必須,
19、肯定。 知識拓展:can的基本用法:1)(表示能力、功能)能,會;2)(表示推測)可能,可能會;3)(表示允許,請求)可以;4)(表示客觀可能性)有時會。 4.【2017·北京卷】Samuel, the tallest boy in our class, ______ easily reach the books on the top shelf. A. must B. should C. can D. nee
20、d Key: C【解析】:考查情態(tài)動詞A. must 必須;B. should應該;C. can能;D. need需要。句意:Samuel,我們班最高的男生,能很輕松地夠著書架頂上的書。此處需要一個表示能力的詞,故用can,答案為C。 三、虛擬語氣考點精講: 虛擬語氣考點1、非真實條件句中的虛擬語氣 類別 用法 例句 If引導的條件從句 與現(xiàn)在事實相反 從句動詞:過去式(be用were) 主句動詞:should/would/could/might+do If he were here, he would help us. 與過去事實相反 從句動詞:had+done
21、主句動詞:should/would/could/might+have+done If I had been free,I would have visited you. 與將來事實相反 從句動詞: 過去式/should+do/wereto +do 主句動詞: should/would/could/might+do If it should rain tomorrow, we would not go camping. 省略if的虛擬條件句 將虛擬條件從句中的were,had, should放到主語之前,構(gòu)成主謂倒裝 ①Should he come ,tell him to
22、ring me up. ②Were I you,I would not do it. ③Had I been free,I would have visited you. 錯綜虛擬語氣 條件從句與主句表達的時間不一致 If I had followed your advice, I would be in college now. 虛擬語氣考點2、表命令、要求、建議的詞后的賓語從句,表語從句和同位語從句的虛擬語氣。動詞insist, order, command, advise, suggest,propose,recommend, desire, demand, require,
23、 request, urge后接的賓語從句以及他們相應的名詞后的表語從句和同位語從句中動詞為should+do。(should可以省略)(記憶口訣:一個堅持,兩個命令,四個建議,五個要求) EG1:He suggested that we (should)not change our mind. 虛擬語氣考點3、其他從句中的虛擬語氣 1、wish后的從句中分別用過去式,過去完成式和would/could/might+do表示與現(xiàn)在,過去和將來情況相反 EG1: I wish I had gone to Shanghai last month. 2、句型It is time
24、 that…句型中動詞用過去式或should+do EG2: It’s high time that we left/should leave. 3、would rather(寧愿)所接的從句中動詞用過去式或者過去完成式 EG3: I would rather you stayed at home now. 4、If only(要是....該多好)句型中動詞常用過去式或者過去完成式,表示強烈的愿望 EG4: If only our dream had come true! (與條件句中的虛擬語氣用法一樣) 考點對練2: 1. 【2020·江蘇卷
25、單項填空】If I hadn’t been faced with so many barriers, I _____where I am. A. won’t beB. wouldn’t have been C. wouldn’t be D. shouldn’t have been Key: C【解析】考查虛擬語氣。句意:如果我沒有面對那么多的障礙,我現(xiàn)在就不會在這里。分析句子成分可知,此處是錯綜時間虛擬語氣,根據(jù)空后where I am可知,此處是與現(xiàn)在事實相反的假設,主句謂語動詞應使用would/could/might/should+do。故選C。 2.【201
26、9·天津卷·單項填空】The workers were not better organized, otherwise they ____________ the task in half the time. A. accomplished B. had accomplished C. would accomplish D. would have accomplished Key: D【解析】考查虛擬語氣。句意:工人們沒有被更好的組織起來,否則他們用一半的時間就能完成任務。根據(jù)上句the workers were not better organized可知,這是
27、對過去事情的虛擬。與過去事實相反的假設。其句子結(jié)構(gòu)為:從句:If+主語+過去完成時+其他,主句:主語+should(would, could, might)+現(xiàn)在完成時+其他,故選D。 3.【2018·江蘇】It’s strange that he _______have taken the books without the owner’s permission. A. would B. shouldC. could D. might Key :B【解析】考查虛擬語氣。句意:真奇怪,他竟
28、然沒有主人的允許就拿走了這些書。在句型”It is important/necessary/strange/impossible/natural that...”中,其中由that引導的主語從句通常用“should+動詞原形”這樣的虛擬語氣,其中的should可以省略。故選B。 4.【2018·江蘇】There is a good social life in the village, and I wish I _______ a second chance to become more involved. A. had B.
29、 will haveC. would have had D. have had Key: A【解析】考查虛擬語氣。句意:在村里有很好的社交生活,并且我希望我再有機會去更多的參與。本題考查wish引導的賓語從句,表示與現(xiàn)在事實相反的愿望,所以從句用一般過去時。故選A。 知識拓展:由wish引起的表示愿望的虛擬語氣: 1)用wish表示對現(xiàn)在的愿望時,它所引起的賓語從句中謂語動詞形式為:過去式(be動詞用were)。 2)用wish表示對將來的愿望時,它所引起的賓語從句中謂語動詞形式為:would, could, might+ 動詞原形。 3)wish用于對過去的事實表
30、示一種不可能實現(xiàn)的愿望時,賓語從句中的謂語動詞形式為:had+動詞過去分詞或could, would + have +動詞過去分詞。 5.【2018·天津】15. If we ___________the flight yesterday, we would be enjoying our holiday on the beach A. had caught B. caughtC. have caught D. would catch Key: A【解析】考查虛擬語氣。句意:如果我們昨天趕上飛機的話,現(xiàn)在我們正在海灘享受我
31、們的假日了。根據(jù)時間狀語yesterday可知,從句表示與過去事實相反,故用had + v-ed。故選A。 四、情態(tài)動詞與虛擬語氣應考技巧: 1、情態(tài)動詞與虛擬語氣在全國卷中不是考查的重點,但偶爾也會考到,如填空題中填情態(tài)動詞can,should,may等詞,考含有虛擬語氣的句子中用所給動詞的適當形式填空。 2、在語法改錯題中,情態(tài)動詞后接動詞原形是考查的重點,含虛擬語氣的句子中的動詞形式的錯誤也時有考到。 EG1:(2016·全國Ⅱ,短文改錯)We can chose between staying at home and taking a trip.Key:chose-choose
32、 EG2:(2016·全國Ⅱ,短文改錯)Some classmates suggest we can go to places of interest nearby. Key:can-should或劃掉can 3.在聽力和閱讀中,要注意情態(tài)動詞尤其是情態(tài)動詞+have done和虛擬語氣對文章理解的影響。 EG3:看下面聽力中的對話: A.Oh, dear. I wish we had taken the lift. B.If I had known it was so far up, I wouldn’t have suggested walking. What are the
33、 two speakers doing? A.Walking down a hill. B.Climbing stairs. C.Discussing a trip. 解析:解這道題,不僅要聽懂,而且要理解好兩句虛擬語氣的句子。I wish we had taken the lift. 意為“我希望我們乘坐了電梯”,言外之意是我們現(xiàn)在沒有坐電梯;第二句虛擬語氣“If I had known it was so far up, I wouldn’t have suggested walking.”意為“如果我知道上來有這么遠,我就不會建議走路了”,言外之意是現(xiàn)在他們現(xiàn)在在爬樓梯,沒有坐
34、電梯。 五、情態(tài)動詞與虛擬語氣考點精練 (一)單句語法填空(真題改編):在空格處填上適當?shù)脑~或用所給詞的適當形式填空。 1.【2021.3 天津卷單選改編】It used to be that you drive for miles here without seeing another person, but now there are houses and people everywhere. Key:could【解析】考查情態(tài)動詞辨析。句意:以前你可以開車到這里走好幾英里,而看不到別的人,但現(xiàn)在到處都是房子和人??崭袂懊媸侵髡Z后面是動詞原形所以應該填情態(tài)動詞
35、,有根據(jù)句意本空應填could。 2.【2019·江蘇卷·單項填空改編】What a pity! You missed the sightseeing, or we _________(have)a good time together. Key :would have had【解析】考查虛擬語氣。句意:真遺憾!你錯過了這次觀光,否則,我們本應該在一起度過一段愉快時光的。根據(jù)上文,可知是對過去事情的虛擬,與過去事實相反的假設。其句子結(jié)構(gòu)為:從句:If+主語+過去完成時+其他,主句:主語+should(would, could, might)+現(xiàn)在完成時+其他,所以填would have h
36、ad 3.【2018·天津改編】10. I can't find my purse. I___________(leave)it in the supermarket yesterday, but I'm not sure. Key: could have left【解析】考查情態(tài)動詞表推測和虛擬語氣。句意:我不能找到我的錢包了,昨天我有可能把它落到超市了,但我不確定。根據(jù)句中時間狀語yesterday可知,是對過去事情的推測,故用情態(tài)動詞+ have done,再根據(jù)后句but I’m not sure.可知,此推測為不能肯定的推測,故用情態(tài)動詞could have left ,表示“可
37、能把它忘記在超市了”。故選D。 4.【2018·北京改編】They might have found a better hotel if they _________(drive)a few more kilometers. Key:had driven【解析】考查虛擬語氣。句意:如果他們多開幾公里的話,他們也許會找到一個更好的旅館。由“they might have found a better hotel”可知,該句是表示對過去的虛擬。if ____ a few more kilometers是條件句部分,表示對過去的虛擬,條件句部分要用過去完成時態(tài),故填had driven 5.【
38、2017·北京卷改編】If the new safety system _______ to use, the accident would never have happened. Key: had been put 【解析】考查虛擬語氣。句意:如果這個新的安全系統(tǒng)被投入使用過的話,這個事故就不會發(fā)生了。根據(jù)主句確定是對過去情況的虛擬,所以從句謂語用had done形式,此外根據(jù)句意可知是被動,用被動語態(tài),故填had been put。 6.【2016·全國Ⅰ,閱讀A改編】When Sandra Day O’Connor finished third in her class at S
39、tanford Law School in 1952, she ________not find work at a law firm because she was a woman.Key:could 7.【2014·湖南,25改編】—I've prepared all kinds of food for the picnic. —Do you mean we________ (not)bring anything with us? Key:needn’t 8.【2014·北京,27改編】________ I have a word with you? It won't take lo
40、ng. Key: can 9.【2016·北京,31改編】I love the weekend, because I_______get up early on Saturdays and Sundays.Key:needn’t 10.【2016·浙江,17改編】George ________(go) too far .His coffee is still warm. Key:can’t have gone 11.【2015·北京,29改編】—Can't you stay a little longer? —It's getting late.I really ________ g
41、o now.My daughter is home alone.Key:must 12.【2015·重慶,12改編】You _______ be Carol.You haven't changed a bit after all these years.Key:must 13.【2015·陜西,21改編】You ________feel all the training a waste of time,but I'm a hundred percent sure later you'll be grateful you did it.Key:may 14.【2015·福建,27改編】—S
42、orry, Mum! I failed the job interview again. —Oh, it's too bad.You ________ have made full preparations. Key:should/ought to 15.【2015·天津,7改編】I ________have worried before I came to the new school, for my classmates here are very friendly to me.Key:needn’t 16.【2015·北京,34改編】If I ________(not see)it
43、 with my own eyes, I wouldn't have believed it.Key:hadn’t seen 17.【2015·重慶,7改編】Without his wartime experiences, Hemingway ________(write)his famous novel AFarewelltoArms.Key:wouldn't have written 18.【2015·陜西,23改編】Ellen is a fantastic dancer.I wish I ________(dance)as well as her.Key:danced 19.【20
44、15·天津,13改編】I wish I ________(be)at my sister's wedding last Tuesday, but I was on a business trip in New York then.Key:had been 20.【2015·安徽,32改編】It is lucky we booked a room, or we ________(have)nowhere to stay now.Key:would have 21.【2014·湖南,22改編】If Mr.Dewey________(be) present,he would have offer
45、ed any possible assistance to the people there.Key:had been 22.【2014·陜西,23改編】We would rather our daughter________(stay) at home with us,but it is her choice,and she is not a child any longer.Key:stayed 23.It is high time we _________ (get) down to discuss this plan.Key:got/should get 24.I insiste
46、d he ________(go) to see a doctor, but he insisted nothing _________ (be) wrong with him.Key:(should) go/was 25.Her pale face suggested that she ______ (be) ill, and her colleagues suggested that she _______(have) a medical examination. Key: was/(should) have (二)單句語法改錯 1.【2018·全國II】As a kid, I lo
47、ved to watch cartoons, but no matter how many times I asked to watch them, my parents would not to let me.Key:劃掉to 考查情態(tài)動詞。would后跟動詞原形,故把to刪除。 2.【2018·江蘇改編】It’s strange that he would have taken the books without the owner’s permission. Key:would→should 3.【2018·江蘇改編】27. There is a good social life
48、 in the village, and I wish I have a second chance to become more involved. key : have→had 4.【2018·天津改編】10. I can't find my purse. I should have left it in the supermarket yesterday, but I'm not sure. Key: should→could 5.【2018·北京改編】13. They might have found a better hotel if they have driven a few
49、 more kilometers. Key:have→had (二)情態(tài)動詞與虛擬語氣語篇填空訓練 I am a middle school student.I have many dreams.If there [1]________(be) not so much homework, I would have more time to do what I like to do.How I wish I [2]________(listen) to my favorite music for an hour a day and [3]________(play) table tennis
50、 for an hour in the morning!It's my desire that we [4]________(hold) evening parties or [5]_______(organize) some interesting activities at weekends.I suggest that there [6]________(notbe)so many tests.You can imagine what life [7]_______ (will) be if I [8]_______(realize) my dream.But I must face t
51、he exams.Without good marks, I [9]________(will) not enter my ideal university.Anyway, it's high time that I [10]________(encourage) myself and worked hard from now on. Keys:1.were 2.listened 3.played 4.(should)hold 5.(should)organize 6.(should)be 7.would 8.realized/should realize/were to realize 9.would 10.encouraged /should encourage
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