2024屆高考英語一輪復(fù)習(xí)詞法課件：情態(tài)動(dòng)詞和虛擬語氣（全國通用）

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　　She 11.

　　have had supper earlier，or she could have taken a taxi，and indeed she needn’t 12.

　　(take) a bath in advance.When she reached the park finally，she found nobody was there.She remembered suddenly that it had been reported on the radio that there would be a heavy rain that night. should have taken 答案 B Reading books is a good hobby for all kinds of reasons. First，reading books 13.

　　(be) fun.You can always keep yourself

　　14.

　　(interest) and it can help you have an enjoyable time if you like reading.This is especially useful when the weather is bad.It is a 15.

　　(relax) hobby too. Next，you can read a book anywhere：in a car，in a waiting room，on a plane，in bed—even in the bath.16.

　　you need is a book! Reading is a convenient hobby as it is easy to stop and then start again. is interested relaxing What/All 答案 Another good reason for reading books is 17.

　　it is useful.If you read as a hobby，you 18.

　　(get) better and better at it.This means that you will read faster and will become 19.

　　(good) at understanding what you read.As your reading improves，you will probably find your school work becomes much easier.Many school subjects depend 20.

　　good reading and，as you read you learn more and more. Good readers are most likely to be good 21.

　　(write)，too.They are usually good at 22.

　　(spell) as well，and have more things to write about.Reading books is really a wonderful hobby. that will get better on writers spelling 答案返回注意：這種從句表示的是事實(shí)。如果人對(duì)這種事實(shí)表現(xiàn)出驚奇的情感，就可用虛擬語氣；反之，如果不表示驚奇等情感，that從句也可用陳述句語氣。 It is a pity that you can’t swim. 3.虛擬語氣在其他場(chǎng)合的運(yùn)用 (1)虛擬語氣在as if/as though，even if/even though等引導(dǎo)的表語從句或狀語從句中，如果從句表示的動(dòng)作發(fā)生在過去，用過去完成時(shí)；指現(xiàn)在狀況，則用一般過去時(shí)；指將來狀況則用過去將來時(shí)。 He did it as if he were an expert. Even if she were here，she could not solve the problem. (2)虛擬語氣用于定語從句中。這種從句常用于句型“It is (high)time (that)...”中，定語從句的謂語動(dòng)詞用一般過去時(shí)(be用were)或“should＋動(dòng)詞原形”，意為“(現(xiàn)在)該……”。 It’s time that I picked up/should pick up my daughter. It’s high time we were going/should go. (3)虛擬語氣用在if only引導(dǎo)的感嘆句中。 If only I were a pilot. If only I had taken his advice. (4)虛擬語氣在一些簡單句中的運(yùn)用。 ①情態(tài)動(dòng)詞的過去式用于現(xiàn)在時(shí)態(tài)時(shí)，表示說話人謙虛、客氣、有禮貌或語氣委婉，常出現(xiàn)在日常會(huì)話中。 It would be better for you not to stay up too late. Would you be kind enough to close the door? ②用于一些習(xí)慣表達(dá)法中。 Would you like a cup of tea? I would rather not tell you. 返回情態(tài)動(dòng)詞和虛擬動(dòng)詞在高考中的應(yīng)用 ◆情態(tài)動(dòng)詞、虛擬語氣與語法填空對(duì)于情態(tài)動(dòng)詞在語法填空中考查主要注意情態(tài)動(dòng)詞的一般用法以及“情態(tài)動(dòng)詞＋have done”；而對(duì)于虛擬語氣的考查除了注意情態(tài)動(dòng)詞的選用，還需注意一般過去時(shí)與過去完成時(shí)在虛擬語氣中的考查。典題試做1 在空白處填入適當(dāng)?shù)那閼B(tài)動(dòng)詞或括號(hào)內(nèi)所給動(dòng)詞的正確形式 1.You

　　be Carol.You haven’t changed a bit after all these years.(2024·重慶) 解析　根據(jù)be動(dòng)詞為原形，可判斷此處缺少情態(tài)動(dòng)詞或助動(dòng)詞。根據(jù)后句You haven’t changed a bit 可知，說話者完全認(rèn)出了Carol，猜測(cè)的語氣非常肯定，故填must。 must 解析答案 2.You

　　feel all the training a waste of time，but I’m a hundred percent sure later you’ll be grateful you did it.(2024·陜西) 解析　由句中的but及后一分句中的a hundred percent sure可知，此處表示語氣不強(qiáng)烈的推測(cè)，故填may。 3.Although you

　　find bargains in London，it’s not generally a cheap place to shop.(2024·大綱全國) 解析　由語境可知，此處表示“你可能在倫敦找到便宜貨”，指客觀上的可能性。故填can。 may can 解析答案 4.Mum：Are they there? Oh，my goodness.I

　　have put them in there when the phone rang.(2024·新課標(biāo)全國樣卷) 解析　動(dòng)詞原形前常跟情態(tài)動(dòng)詞或助動(dòng)詞。根據(jù)句意，是對(duì)過去的推測(cè)，故肯定句中用must have done形式。 5.—Sorry，Mum! I failed the job interview again. —Oh，it’s too bad.You

　　have made full preparations.(2024·福建) 解析　表示“本應(yīng)該做某事，但事實(shí)上卻沒有做”，用should have done sth.表示，故填should。 must should 解析答案 6.I still remember my happy childhood when my mother

　　take me to Disneyland at weekends.(2024·四川) 解析　由主句中的關(guān)鍵信息 my happy childhood可知，是小時(shí)候經(jīng)常被帶去迪斯尼樂園。表示“過去常常”要用情態(tài)動(dòng)詞would。 7.He walked in as if he

　　(buy) the school.And the word quickly got around that he was from New York City.(2024·廣東) 解析　這是由as if引導(dǎo)的虛擬語氣，因?yàn)槭桥c過去事實(shí)相反，故用過去完成時(shí)。 would had bought 解析答案 8.No one

　　be more generous；he has a heart of gold.(2024·天津) 解析　“No one could be more generous”是否定詞和比較級(jí)連用，表達(dá)最高級(jí)含義，can/could可以在否定句中表示推測(cè)。 9.Ellen is a fantastic dancer.I wish I

　　(dance) as well as her. (2024·陜西) 解析　wish后跟賓語從句時(shí)，從句中需要用虛擬語氣，主句用一般現(xiàn)在時(shí)，從句中用did表示對(duì)現(xiàn)在事實(shí)的虛擬。故填danced。 can/could danced 解析答案 10.It is lucky we booked a room，or we

　　(have) nowhere to stay now.(2024·安徽) 解析　or引導(dǎo)含蓄虛擬條件句，or后面是主句，相當(dāng)于if we hadn’t booked a room，we would have nowhere to stay now，根據(jù)“now”可知，是對(duì)現(xiàn)在進(jìn)行虛擬。故填would have。 would have 解析答案應(yīng)對(duì)策略1 1.若句中謂語動(dòng)詞為原形，在其前設(shè)純空格題時(shí)，注意考慮情態(tài)動(dòng)詞與助動(dòng)詞。然后根據(jù)句意或句式結(jié)構(gòu)填入恰當(dāng)?shù)那閼B(tài)動(dòng)詞或助動(dòng)詞。 2.一旦判斷所給動(dòng)詞在句中作為謂語后，就考慮其時(shí)態(tài)、語態(tài)、語氣、主謂一致等。注意虛擬語氣中的時(shí)態(tài)，除了if虛擬條件句，還應(yīng)注意虛擬語氣的標(biāo)志詞，如：suggest，would rather，as if，wish，otherwise，or，but for等。 ◆情態(tài)動(dòng)詞、虛擬語氣與短文改錯(cuò) 情態(tài)動(dòng)詞與虛擬語氣在短文改錯(cuò)中偶有考查。常考查情態(tài)動(dòng)詞后的動(dòng)詞形式錯(cuò)誤或be動(dòng)詞遺漏；情態(tài)動(dòng)詞混用或虛擬語氣中情態(tài)動(dòng)詞以及時(shí)態(tài)的錯(cuò)用。典題試做2 單句改錯(cuò)(每小題1處錯(cuò)誤) 1.If you are me，would you talk to them？(2024·四川) 解析　此處是虛擬語氣，表示與現(xiàn)在情況相反，所以要把a(bǔ)re改為were。答案　are→were 解析答案 2.We must found ways to protect our environment.(2024·全國Ⅰ) 解析　考查情態(tài)動(dòng)詞的用法。情態(tài)動(dòng)詞后面要接動(dòng)詞原形。答案　found→find 3.Thank you for all you have done for me.Mom，though I may often say it，I do love you.(2024·四川) 解析　根據(jù)句意，應(yīng)為“盡管我可能不經(jīng)常說，但是我真的很愛您”。答案　may后加not 解析答案 4.My punishment lasted a year.Meanwhile，I found out that with more patience I must make my toys last.My attitude changed from then on.(2024·新課標(biāo)全國) 解析　must必須，一定，用在此處語境不合適。句意為：同時(shí)，我發(fā)現(xiàn)耐心一些，我可以讓我的玩具玩得更久些，所以應(yīng)用could/might。答案　must→could/might 5.I have been practising for three weeks now，but I still couldn’t get used to it—in fact，I’ve nearly killed three people.(2010·四川)

　　答案

　　couldn’t→can’t 解析答案應(yīng)對(duì)策略2 做此類改錯(cuò)題時(shí)，需注意以下幾個(gè)方面： (1)看句中情態(tài)動(dòng)詞是否運(yùn)用正確； (2)看是否考查虛擬語氣；若是考查虛擬語氣，注意分清主句與分句中的時(shí)態(tài)關(guān)系以及不同句式中的虛擬語氣構(gòu)成形式。 ◆書面表達(dá)中情態(tài)動(dòng)詞與虛擬語氣易錯(cuò)點(diǎn)聚焦 1.表達(dá)的單調(diào)性例如在寫一封回信向好友表達(dá)建議時(shí)，重復(fù)使用You should...既顯得單調(diào)，同時(shí)強(qiáng)硬的語氣影響了交際效果。我們可以靈活多樣地表達(dá)建議，如You’d better.../You might as well.../Why not...？等。 2.情態(tài)動(dòng)詞搭配錯(cuò)誤 (誤)You’d not better quarrel with your neighbors whatever happens. (正)You’d better not quarrel with your neighbors whatever happens. —Need I tell him everything that has happened to his father? (誤)—Yes，you need. (正)—Yes，you must. (誤)The King was so hot-tempered that no one dared tell him the bad news. (正)The King was so hot-tempered that no one dare (dared to) tell him the bad news. 3.時(shí)間錯(cuò)綜句的虛擬語氣的表達(dá)錯(cuò)誤從句與主句或上下文所表達(dá)的時(shí)間不一致，部分考生仍照搬某種形式，因未按照句中所表述的時(shí)間關(guān)系，而用錯(cuò)虛擬形式。如： (誤)If his television set had not been stolen yesterday，he would have watched TV now. (正)If his television set had not been stolen yesterday，he would watch TV now. (誤)If I were you，I wouldn’t miss the film last night. (正)If I were you，I wouldn’t have missed the film last night. (誤)If she comes tomorrow，I would tell her the news. (正)If she came tomorrow，I would tell her the news. (正)If she should come tomorrow，I would tell her the news. (正)If she were to come tomorrow，I would tell her the news. (誤)If only she didn’t miss the train the other day. (正)If only she hadn’t missed the train the other day. (誤)It’s time that they go home. (正)It’s time that they went/should go home. (誤)Without your help，we didn’t make so much progress. (正)Without your help，we wouldn’t have made so much progress. (誤)If she didn’t miss the train，she is here now. (正)If she hadn’t missed the train，she would be here now. 返回模擬強(qiáng)化練 Ⅰ.單句語法填空 1.When I was a child，I

　　watch TV whenever I wanted to. 解析　根據(jù)空后watch可知，該空應(yīng)填情態(tài)動(dòng)詞could意為“可以，能夠”。 could 解析答案 2.If we

　　(book)a table earlier，we couldn’t be standing here in a queue. 解析　根據(jù)語境可知，此處是if引導(dǎo)的虛擬條件句，從句敘述的是與過去事實(shí)相反的情況，謂語動(dòng)詞用had done。 3.If he had spent more time practising speaking English before，he

　　(be) able to speak it much better now. 解析　句意為“如果以前他花更多時(shí)間練習(xí)說英語的話，現(xiàn)在他英語就會(huì)說得好多了”。由從句中的had spent可知從句與過去事實(shí)相反；由主句中的now可知主句與現(xiàn)在事實(shí)相反，故用would be。 had booked would be 解析答案 4.I would rather that they

　　(come) here tomorrow. 解析　根據(jù)語境“我寧愿他們明天來”可知他們已經(jīng)來過了，而這與說話人的意愿不符，表示將來的愿望，要用過去時(shí)，故填came。 5.My mom suggests that we

　　eat out for a change this weekend. 解析　suggest表示“建議”時(shí)，所跟賓語從句要用虛擬語氣，用should do構(gòu)成。 came should 解析答案 6.Grace doesn’t want to move to New York because she thinks if she

　　(live) there，she wouldn’t be able to see her parents very often. 解析　Grace不想搬到紐約去，因?yàn)樗J(rèn)為如果她住在那里，就不能經(jīng)常見到父母了。考查虛擬語氣。根據(jù)wouldn’t be able to see...及句意可知，該句為與將來事實(shí)相反的虛擬語氣，所以if從句謂語動(dòng)詞需用“were to＋do或should＋do或動(dòng)詞過去式”。 were to live/should live/lived 解析答案 7.Don’t handle the vase as if it

　　(make) of steel. 解析　考查虛擬語氣。as if意為“好像”，分析句意可知as if后面的句子須使用虛擬語氣，并且所述情況是對(duì)現(xiàn)在事實(shí)的假設(shè)，因此使用一般過去時(shí)的被動(dòng)語態(tài)。 8.We lost our way in that small village，otherwise we would

　　(visit) more places of interest yesterday. 解析　考查虛擬語氣。根據(jù)語境可知謂語動(dòng)詞部分所表達(dá)的意思與過去事實(shí)相反，需用“should/would/could/might＋have＋過去分詞”結(jié)構(gòu)。 were made have visited 解析答案 9.Sorry，I am too busy now.If I

　　(have) time，I would certainly go for an outing with you. 解析　考查虛擬語氣。根據(jù)第一句可知設(shè)空處是對(duì)現(xiàn)在的假設(shè)，故if從句謂語動(dòng)詞為過去式。 10.Jack is a great talker.It’s high time that he

　　(do) something instead of just talking. 解析　考查虛擬語氣句型It is high time that sb. did sth.或It is high time that sb. should do sth.到某人該做某事的時(shí)候了。 had did/should do 解析答案 Ⅱ.單句改錯(cuò)(每小題1處錯(cuò)誤) 1.Judging from what you say，he ought succeed. 答案　ought后加to 2.I would rather I stayed at home yesterday. 答案　stayed前加had 3.I can have lent you the money.Why didn’t you ask me? 答案　can→could 4.Something is wrong with my computer and it need repairing. 答案　need→needs 答案 5.I asked him whether he needs go there. 答案　needs→need 6.I would rather to work than play. 答案　去掉to 7.You’d better to wear rubbers，for it’s raining outside. 答案　去掉to 8.She could sang very well when she was a girl. 答案　sang→sing 9.It is high time that we take some measures to protect the wild animals. 答案　take→took或take前加should 答案 10.Was I to be a teacher in the future，first of all，I would try my best to give students lessons. 答案　Was→Were 答案 Ⅲ.語法填空 A(情態(tài)動(dòng)詞和虛擬語氣專練) Lucy is an outgoing lady.She 1.

　　play many kinds of musical instruments.Actually，she 2.

　　play the piano when she was 8 years old.Lucy also keeps taking exercise every day.She says that she has to do some sports because she 3.

　　keep slim.“You 4.

　　get fat soon if you don’t take exercise every day.” She usually says to her friends. can could must shall 答案 As for her，an elegant lady should try to keep fit.However，last week，she found that she 5.

　　put on weight and her husband suggested that she

　　lose weight.And these days she’d rather that she 7.

　　(take) more exercise every day.However，she is always lack of time because she ought to take care of her children. One night after supper，she walked quickly in order to go dancing at the Tomorrow Park and she was late.On her way，she thought that the dancing must 8.

　　(begin)，and the coach 9.

　　have taught or shown many new moves.She was afraid that her friends might 10.

　　(leave) before she got there.She was regretful then. might should took have begun could have left

　　答案第一部分

　　詞法篇——?jiǎng)釉~ 核心考點(diǎn)精析情態(tài)動(dòng)詞和虛擬動(dòng)詞在高考中的應(yīng)用模擬強(qiáng)化練 ◆情態(tài)動(dòng)詞的核心考點(diǎn) 1.can，be able to 和could (1)can和be able to都表示能力，意思上沒多大區(qū)別。但can只有現(xiàn)在和過去時(shí)，而be able to則有更多的形式。但當(dāng)成功地完成某一具體動(dòng)作時(shí)，通常不用could而用was/were able to來表示。這時(shí)was/were able to 相當(dāng)于managed to，表示經(jīng)過一番努力，終于能夠完成某事。 Her mother can speak French. The wounded man was still able to get to the village and was saved by the villagers in the end. 核心考點(diǎn)精析 (2)表示猜測(cè)“可能”，一般用于疑問句和否定句。 —Can the news be true? —It can’t be true. Someone is knocking at the door.Who could it be? (3)can可以表示理論上的可能性，指常有的行為或情形，意為“有時(shí)會(huì)……”。 Anybody can make mistakes. (4)表示請(qǐng)求、允許(表請(qǐng)求時(shí)，口語中常用could代替can使語氣更委婉，回答時(shí)用can)。 Can I go now? —Could I come to see you tomorrow? —Yes，you can.(否定答語可用No，I’m afraid not.) (5)表示驚異、懷疑、不相信的態(tài)度(主要用于否定句、疑問句或感嘆句中)。 How can that be true？I can’t believe my eyes and ears. How could you be so careless? (6)can的特殊用法。 can but只有；can’t but不得不；can’t...too再怎樣也不為過，越……越好 I can but wait. I can’t but wait. You can’t be too patient to the customers. 2.may和might的用法 (1)表示允許、請(qǐng)求，might比may的語言更委婉一些。 —May I watch TV now? —Yes，you may.(Yes，please.) —No，you mustn’t.(No，you’d better not.) (2)表示可能性時(shí)，might比may的可能性小，may表示的可能性比can小(主要用于陳述句、肯定或否定句，疑問句用can代替)。 The story may not be true. (3)表示祝愿(不用might) May you succeed! (4)may/might as well最好還是……，不妨 You might as well do it now. (5)may/might well很可能 He may well be late for class. 3.must，have to和ought to的用法 (1)must ①表示“必須，應(yīng)該，一定要”。強(qiáng)調(diào)主觀看法，只有現(xiàn)在時(shí)形式，否定式是must not(mustn’t)。must開頭的問句，其否定回答要用needn’t或don’t have to代替。 ②表示必然的結(jié)果。 All men must die. ③還可表示主語固執(zhí)、偏要做他人不希望做的事。 It can’t help；he must do that. (2)have to著重客觀需要，能用于更多時(shí)態(tài)(過去時(shí)或?qū)頃r(shí))。 He will have to be there before ten. (3)ought to表示義務(wù)和責(zé)任，“應(yīng)該”，比should語氣要強(qiáng)。 You ought to take care of yourself. 4.need和dare的用法 (1)need表示“需要，必要”，只能用于否定句和疑問句。在肯定句中，常用must和have to代替。 (2)dare表示“敢”，通常用于否定句、疑問句和條件狀語從句中。 Dare you go home alone at eleven in the evening? (3)need和dare的特殊用法 ①need表“需要”時(shí)，可用want，require代替。 The desk needs to be repaired./The desk needs repairing. ②dare作實(shí)義動(dòng)詞時(shí)，在肯定句中要接to，在疑問句和否定句中to可省去。 He dares to catch a snake. I do not dare (to) complain. Do you dare (to) swim in the river? 5.will和would的用法 (1)will ①表示請(qǐng)求、建議，常用于第二人稱。 Will you please go with me? ②表示意愿、決定、允許。 I will never do that again. ③表示習(xí)慣性動(dòng)作或某種傾向，“總是，慣于”，通常用于第三人稱。 Rosa will always be late for school. (2)would ①表示請(qǐng)求、建議，比will委婉，指現(xiàn)在時(shí)間，多用于第二人稱。 Would you like a cup of tea?

　　②表示過去習(xí)慣性動(dòng)作或某種傾向。 We would play badminton on Sundays. 6.shall和should的用法 (1)shall 用于第一、三人稱，在問句中表示征求對(duì)方意見或請(qǐng)求。 Shall I come in? 用于第二、三人稱的陳述句中，表示命令或威脅。 You shall do as your father says. (2)should ①表示責(zé)任、義務(wù)，意為“應(yīng)該”。 ②表示驚訝語氣，意為“竟然”。 You should wear slippers in class. ③用于條件句，表示“假如，萬一”，省去if，should可提至句首。 Should you be late，apologize to the teacher. 7.情態(tài)動(dòng)詞表示推測(cè)或判斷的用法下表即是表示推測(cè)的情態(tài)動(dòng)詞使用的場(chǎng)合：情態(tài)動(dòng)詞對(duì)現(xiàn)在和未來的推測(cè) 對(duì)過去的推測(cè) 使用場(chǎng)合 must must＋do must have done 肯定句 may/might may/might＋do may/might have done 肯定句、否定句 can/could can/could do can/could have done 否定句、疑問句(could可用于肯定句) should 用來表示一種估計(jì)的情況“按理會(huì)/估計(jì)會(huì)”should do should have done 肯定句、否定句、疑問句情態(tài)動(dòng)詞＋have done的用法 (1)should have done表示“本來應(yīng)該做某事而實(shí)際上未做”，而shouldn’t have done則表示“本不應(yīng)該做某事而實(shí)際上做了”。 You should have told me about it earlier. You shouldn’t have said such words to your parents. (2)ought to have done也表示“本應(yīng)該……”，而ought not to have done則意為“本不應(yīng)該……”。 You ought to have told me about it earlier. You ought not to have said such words to your parents. (3)needn’t have done表示“本無必要做某事而實(shí)際上做了”。 You needn’t have walked so quickly since time was enough. (4)could have done表示“本來有可能……而事實(shí)上未做到”。 I could have come on time，but my car broke down on the way. (5)may/might have done表示“過去可能發(fā)生過某事”或“本來應(yīng)該或可以做某事(實(shí)際上沒做)”。 You might have given him more help，but you were so busy. ◆虛擬語氣的核心考點(diǎn) 1.虛擬語氣用于條件狀語從句 (1)表示與現(xiàn)在事實(shí)相反的假設(shè)，條件狀語從句中的謂語動(dòng)詞用一般過去時(shí)(be動(dòng)詞用were)，而主句中的謂語動(dòng)詞用“would/should/could/might＋動(dòng)詞原形”。 If I were you，I would buy that house. If he had time，he should go with you. (2)表示與過去的事實(shí)相反，條件狀語從句中的謂語動(dòng)詞用過去完成時(shí)，主句中的謂語動(dòng)詞則用“would/should/might/could＋have＋過去分詞”。 If he had taken my advice，he would have succeeded in passing the examination. (3)表示與將來事實(shí)相反，條件狀語從句中的謂語動(dòng)詞用一般過去時(shí)或“should/were to＋動(dòng)詞原形”，而主句中的謂語動(dòng)詞則用“would/should/could/might＋動(dòng)詞原形”。 If it were to rain tomorrow，the football match would be put off. (4)當(dāng)條件狀語從句表示的行為和主句表示的行為所發(fā)生的時(shí)間不一致時(shí)，動(dòng)詞的形式要根據(jù)它所表示的時(shí)間作相應(yīng)調(diào)整。 If they had worked hard，they would be very tired now.(從句說的是過去，主句指的是現(xiàn)在) 2.虛擬語氣用于名詞性從句 (1)虛擬語氣在賓語從句中的運(yùn)用。 ①“wish＋賓語從句”表示不能實(shí)現(xiàn)的愿望，譯為“要是……就好了”等。表示現(xiàn)在不能實(shí)現(xiàn)的愿望，從句中的謂語動(dòng)詞用一般過去時(shí)；表示將來不能實(shí)現(xiàn)的愿望，從句中的謂語動(dòng)詞用“would/could＋動(dòng)詞原形”；表示過去不能實(shí)現(xiàn)的愿望，從句中的謂語動(dòng)詞用“had＋過去分詞”或“could/should＋have＋過去分詞”。 I wish it were spring all the year round. I wish I had known the answer. I wish I could fly like a bird. ②在表示建議、要求、命令等動(dòng)詞后的賓語從句中，謂語動(dòng)詞用“should＋動(dòng)詞原形”，should可以省略。常見的動(dòng)詞有：suggest，advise，propose，demand，require，insist，request，command，order等。 She suggested we (should) leave here at once. The doctor ordered she should be operated on. (2)虛擬語氣在同位語從句和表語從句中的運(yùn)用。表示建議、要求、命令等的名詞，如advice，idea，order，demand，plan，proposal，suggestion，request等，其后的表語從句和同位語從句中謂語動(dòng)詞用“(should＋)動(dòng)詞原形”，should可以省略。 His suggestion that we (should) go to Shanghai is wonderful. My idea is that they (should) pay 100 dollars. (3)虛擬語氣在主語從句中的運(yùn)用。在主語從句中，謂語動(dòng)詞的虛擬語氣用“(should＋)動(dòng)詞原形”的結(jié)構(gòu)，表示驚奇、不相信、理應(yīng)如此等。 It is necessary (important，natural，strange，etc.)that we (should) clean the room every day. It was a pity (a shame，no wonder，etc.)that you (should) be so careless. It will be desired (suggested，decided，ordered，requested，proposed，etc.)that she (should) finish her homework this afternoon.