2013屆高考英語(yǔ) 考點(diǎn)語(yǔ)法歸納復(fù)習(xí)題8
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1、2013高考英語(yǔ)考點(diǎn)語(yǔ)法單選超級(jí)歸納: 八、情態(tài)動(dòng)詞和虛擬語(yǔ)氣 情態(tài)動(dòng)詞 I.情態(tài)動(dòng)詞基本用法 情態(tài)動(dòng)詞 用 法 否定式 疑問式 簡(jiǎn)答式 can 能力(體力,智力,技能)允許或許可(口語(yǔ)中常用) 可能性(表猜測(cè),用于否定句或疑問句中) can not / cannot /can’t do Can…do…? Yes,…can. No,…can’t. could couldn’t do may 可以(問句中表示請(qǐng)求) 可能,或許(表推測(cè)) 祝愿(用于倒裝句中) may not do May…do…? Yes,…may. No,…mustn’
2、t/can’t. might might not do Might…do…? Yes,…might No,…might not. must 必須,應(yīng)該(表主觀要求) 肯定,想必(肯定句中表推測(cè)) must not/mustn’t do Must…do…? to. Yes,…must. No,…needn’t/don’t have have to 只好,不得不(客觀的必須,有時(shí)態(tài)和人稱的變化) don’t have to do Do…h(huán)ave to do…? Yes,…do. No,…don’t. ought to 應(yīng)當(dāng)(表示義務(wù)責(zé)任,口語(yǔ)中多
3、用should) ought not to/oughtn’t to do Ought…to do…? Yes,…ought. No,…oughtn’t. shall 用于一三人稱征求對(duì)方意見 用于二三人稱表示許諾、命令、警告、威脅等 shall not/shan’t do Shall…do…? Yes,…shall. No,…shan’t. should 應(yīng)當(dāng),應(yīng)該(表義務(wù)責(zé)任) 本該(含有責(zé)備意味) should not/shouldn’t do Should…do…? will 意愿,決心 請(qǐng)求,建議,用在問句中would比較委婉 will
4、 not/won’t do Will/Would…do…? Yes,…will. No,…won’t. would would not/wouldn’t do dare 敢(常用于否定句和疑問句中) dare not/daren’t do Dare…do…? Yes,…dare. No,…daren’t. need 需要,必須(常用于否定句和疑問句中) need not/needn’t do Need…do…? Yes,…must. No,…needn’t. used to 過去常常(現(xiàn)在已不再) used not/usedn’t/usen’t to
5、do didn’t use to do Used…to do…? Did…use to do…? Yes,…used. No,…use(d)n’t. Yes,…did. No,…didn’t. II.情態(tài)動(dòng)詞的重點(diǎn)知識(shí) 表示“能力、許可”的can和may 表示能力的情態(tài)動(dòng)詞用can/could A computer_____think for itself; it must be told what to do. A.can’t B.mustn’t C.may not D.might not 表示許可時(shí)用may/might ,ca
6、n/could 都可以,但在問句中用could…?或might…? 以使口氣委婉客氣,其回答一定要用can或may,以使回答口氣明確(must表示一定,必須,mustn’t表示禁止,不許可)。 ①—Could I call you by your first name? —Yes, you______ A.will B.could C.may D.might ②Johnny, you_____play with the knife, you_____hurt yourself. A.won’t/can’t B.mustn’t/may C
7、.shouldn’t/must D.can’t/shouldn’t 在肯定句中could不可以用來表示過去某一特定場(chǎng)合的能力,而要用was/were able to。 The fire spread through the hotel very quickly but everyone_____get out. A.had to B.would C.could D.was able to 表示“推斷、判斷”的can may,must 在肯定句中都可以用來表示可能。在含義上must語(yǔ)氣最肯定,may表示的是事實(shí)上的可能性。 Peter
8、______come with us tonight, but he isn’t very sure yet. A.must B.may C.can D.will 而can表示的是邏輯上的可能性: Mary is in poor health. She can be ill at any times. 在否定句中只能用can和may。所以can’t時(shí)用以代替mustn’t,語(yǔ)氣比may更肯定。中文可以翻譯為不可能。 Michael______be a policeman, for he’s much too short. A.needn’t
9、 B.can’t C.should D.may 在疑問句只能用can,不能用may和must。 He may be very busy now. Can he be very busy now? He must be very busy now. Can he be very busy now? need need作為情態(tài)動(dòng)詞只有一種形式,只用于否定句和疑問句。 dare dare作為情態(tài)動(dòng)詞用時(shí)有兩種形式:dare和dared兩個(gè)詞形,除了可以用于否定句和疑問句外,還可以用于條件從句或表示懷疑的句子中。 If he da
10、re come,I will kick him out. I don’t know whether he dare say. 注意:He doesn’t dare(to)answer the question.(否定句) Does she dare(to)enter the dark room?(疑問句) shall 用于第一人稱:征求對(duì)方的意見。 What shall we do this evening? 用于第二、三人稱:警告、命令、允諾、威脅等。 You shall fail if you don’t work harder. 警告 He shall have th
11、e book when I finish reading.允諾 He shall be punished.威脅 should 勸告、建議、命令、應(yīng)該做、道義上的責(zé)任。 You should(ought to) go to class right away. I should(ought to) help him because he is in trouble. will/would 請(qǐng)求、建議,would比will委婉客氣。 Would you pass me the book? 表示意志、愿望和決心。 I will never do that again.
12、 They asked us if we would do that again would可表示過去反復(fù)發(fā)生的動(dòng)作或某種傾向。 During the vacation he would visit me every week The wound would not heal.(傷口老是不能愈合) would表示估計(jì)或猜想。 It would be about ten when he left home. What would she be doing there? 情態(tài)動(dòng)詞+have done的用法 could+have done:本可以做而實(shí)際上未能做。 You
13、 could have done better, but you didn’t try your best. cannot+ have done:表示對(duì)現(xiàn)在或過去行為的否定推測(cè)。 He cannot have been to that town. can+主語(yǔ)+ have done:表示對(duì)過去行為的懷疑或不肯定(用在疑問句中)。 Can he have got the book? might(may)+ have done:對(duì)過去發(fā)生的行為不太肯定的推測(cè)。 He may not have finished the work. If we had taken the other r
14、oad, we might have arrived earlier. must+ have done:對(duì)過去發(fā)生的行為肯定的推測(cè)。 其否定式為:cannot have done。 You must have seen the film. You cannot have seen the film. needn’t+ have done:本來不必要做的而實(shí)際上又做了。 You needn’t have watered the flowers,for it is going to rain. 注意:didn’t need to(have to)do: 沒有必要做而實(shí)際上也沒有做
15、 I didn’t need to clean the windows.My sister did it 2 hours ago. should(ought to)+ have done:本來應(yīng)該做而實(shí)際上又沒有做。其否定形式表示某中行為不該發(fā)生卻發(fā)生了。 You should have started earlier, but you didn’t. She shouldn’t have taken away my measuring tape, for I worked to use it. 注意:He should have finished the work by now.(
16、表推測(cè)) 虛擬語(yǔ)氣 類 別 用 法 例 句 If引導(dǎo)的 條件從句 與現(xiàn)在事實(shí)相反 從句動(dòng)詞:過去式(be用were) 主句動(dòng)詞:should/would/could/might+do If he were here, he would help us. 與過去事實(shí)相反 從句動(dòng)詞:had+done 主句動(dòng)詞:should/would/could/might+have+done If I had been free,I would have visited you. 與將來事實(shí)相反 從句動(dòng)詞:過去式/should+動(dòng)詞原形/were+to do 主句動(dòng)
17、詞:should/would/could/might+動(dòng)詞原形 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(yǔ)之前,構(gòu)成主謂倒裝 ①Should he come ,tell him to ring me up. ②Were I you,I would not do it. ③Had I been free,I would have visited you. 混合虛擬條件句 不同時(shí)間的虛擬:各遵守各的規(guī)則 ①If he had listene
18、d to me, he would not be in trouble now. ②If he had told me yesterday,I should know what to do now. ③If I were you, I would have gone to her birthday party. 虛擬與陳述的混合:各遵守各的規(guī)則 ①He could have passed the exam,but he wasn’t careful enough. ②You should have come earlier.The bus left a moment ago. 含
19、蓄虛擬 條件句 but for+名詞表示虛擬條件 句子或主句中的謂語(yǔ)動(dòng)詞的形式視具體情況而定。這是考查考生應(yīng)變能力的最佳試題。 ---But for your timely warning,we ______ into great trouble. ---You know we’re friends. A. would get B. must have got C. would have got D. can’t have got without+名詞表示虛擬條件 Without the air to hold some of the su
20、n's heat, the earth at night would be freezing cold. 動(dòng)詞不定式表示虛擬條件 It would be only partly right to follow in this way. 如果用這種方式,僅僅對(duì)了一半。 現(xiàn)在分詞表示虛擬條件 Having known in time ,we might have prevented the accident.要是及時(shí)得知的話,我們也許能阻止這場(chǎng)事故。 過去分詞表示虛擬條件 Given more attention, the tree could have grown better.
21、 如果多留心的話,這樹本來可以長(zhǎng)的更好。 副詞otherwise表示虛擬條件 I was too busy at that time.Otherwise,I would have called you.我當(dāng)時(shí)太忙,否則我就給你打電話了。 連詞but連接的句子表示虛擬條件 He _____fatter but he eats too little . A. would become B. would have become C. must become D. must have become 其它 狀語(yǔ)從句 as if/as though引導(dǎo)的狀語(yǔ)從
22、句中動(dòng)詞用did或had+done或would/could/might+do。 注意:as if/as though引導(dǎo)的狀語(yǔ)從句中也可以用陳述語(yǔ)氣: 當(dāng)說話者認(rèn)為所述的是真實(shí)的或極有可能發(fā)生或存在的事實(shí)時(shí): It sounds as if it is raining.聽起來像是在下雨。 He talks as if he is drunk.從他談話的樣子來看他是醉了。 ①與現(xiàn)在事實(shí)相反 He talks as if he knew where she was. ②與過去事實(shí)相反 He talks about Rome as if he had been there befor
23、e. ③與將來事實(shí)相反 He opened his mouth as if he would say something. in order that/so that引導(dǎo)的狀語(yǔ)從句中動(dòng)詞用can/could/may/ might/ would等+do Turn on the light so that we can see it clearly. 賓語(yǔ)從句 demand, suggest, order, insist后接的從句中動(dòng)詞為should+do He suggested that we not change our mind. wish后的從句中分別用過去式,過去完成式
24、和should/would+do表示與現(xiàn)在,過去和將來情況相反 I wish I could be a pop singer. I wish I would have gone to Shanghai last month. 主語(yǔ)從句 在It is necessary / important / strange that… It is suggested / demanded/ ordered / requested that…等從句中, 謂語(yǔ)動(dòng)詞用should+do It is strange that such a person should be our friends. 其它 句型中 It is time that…句型中動(dòng)詞用過去式或should+do It’s high time that we left/should leave. would rather所接的從句中動(dòng)詞用過去式或者過去完成式 I would rather you stayed at home now. If only句型中動(dòng)詞常用過去式或者過去完成式,表示強(qiáng)烈的愿望 If only our dream had come true!
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