【正文】 。15．We ________ here at lunch time。14．For environmental reasons，we ________ as well take these waste products and have them recycled. A．should B．would C．might D．could 【解析】 C　考查情態(tài)動(dòng)詞。s hard to believe that such a greedy man________ donate so much to Project Hope. A．may B．need C．can D．shall 【解析】 C　考查情態(tài)動(dòng)詞的特殊用法。shall在這里表示強(qiáng)制，用于法令、條約、規(guī)章中，意為“必須，應(yīng)該”。12．—What does the sign over there read? —No person ________ smoke or carry a lighted cigarette in this area. A．will B．shall C．may D．must 【解析】 B　考查情態(tài)動(dòng)詞的特殊用法。t have thought 【解析】 D　考查“情態(tài)動(dòng)詞＋完成式”的用法。11．When the ship sailed out from Thailand, the 16 sailors on board ______ that only half of them would return again. A．will never think B．can never think C．needn39。句意為：這個(gè)足球隊(duì)在這個(gè)季度訓(xùn)練得很好，因此，他們應(yīng)該會(huì)贏得冠軍。9． Look at the floor, Tom！________you watch TV while having a meal? A．Should B．Could C．Would D．Must 【解析】 D　must 表示與說(shuō)話人愿望相反或不耐煩“非得、偏要”。句意為：三月份在我們家鄉(xiāng)通常比較暖和，但有時(shí)也會(huì)非常冷。在一般疑問(wèn)句或特殊疑問(wèn)句中表推測(cè)時(shí)常用can或could，推測(cè)發(fā)生過(guò)的事情時(shí)情態(tài)動(dòng)詞后要接完成式，只能選B。t Jack e back yet？________anything have happened to him? —I39。s (high) time that…中，從句謂語(yǔ)動(dòng)詞通常用一般過(guò)去式(即虛擬語(yǔ)氣)，意為“該是做……的時(shí)候了”。 will take D．will take。 took B．have taken。4． When I lived with my roommates in the university, we ________ often talk into the night. A．might B．must C．should D．would 【解析】 D　這里描述的是過(guò)去經(jīng)常發(fā)生的動(dòng)作(或過(guò)去經(jīng)常做的事情)。3． —Why didn39。t like to talk much are not necessarily shy；they ________ just be quiet people. A．must B．may C．should D．would 【解析】 B　句意為：有些人不喜歡講話不一定是害羞，他們可能是安靜的人。”2． [2009句意為：“我們班上每個(gè)人都通過(guò)了考試。對(duì)過(guò)去進(jìn)行推測(cè)，表示“一定不”應(yīng)使用 can39。t have been C．must be D．mightn39。1．—Everyone in my class passed the exam. —Oh，really？It ________ difficult. A．can39。若條件句為否定句，則只把were, had, should提前，not仍放在主語(yǔ)之后。8． 【誤】 Hadn39。will通常與第二人稱連用，即Will you…？7． 【誤】 The plant is dead. Maybe I should give more water. 【正】 The plant is dead. Maybe I should have given more water. 【解析】 根據(jù)第一句可知，植物已經(jīng)死亡，所以應(yīng)該是自責(zé)：本應(yīng)該多澆些水的。5． 【誤】 The fire spread through the hotel quickly, but everyone could get out. 【正】 The fire spread through the hotel quickly, but everyone was able to get out. 【解析】 表示在過(guò)去成功地做到了某事，肯定句中通常用was/were able to do sth.。t find my keys. I may/might forget them on the playground yesterday. 【正】 I can39?？芍颂幉⒎菍?duì)現(xiàn)在的狀態(tài)進(jìn)行推測(cè)，而是一種理論上的可能性，因此用can。t see Mary at the meeting yesterday. She might have been ill, I guess. 【解析】 猜的事情發(fā)生在昨天，因此要用情態(tài)動(dòng)詞＋have done形式，當(dāng)動(dòng)詞是be時(shí)，很容易忽略它的時(shí)態(tài)意義，要特別留意。2． 【誤】 I didn39。t 或couldn39。 it can39。 it mustn39。如： May you succeed！祝你成功！ Long live the People39。 If only he could e tomorrow. 他明天能來(lái)就好了。如： If only you hadn39。如： I would rather you came tomorrow. 我寧愿你明天來(lái)。s high time we got up/should get up. 我們?cè)缭撈鸫擦?。從句中，謂語(yǔ)動(dòng)詞可以使用過(guò)去式，也可使用should＋動(dòng)詞原形；表示“早該……了”，其中should不可省略。5． 虛擬語(yǔ)氣在其他一些句型中的用法(1) It39。如： I39。4． 虛擬語(yǔ)氣在狀語(yǔ)從句中的用法 在as if/though引導(dǎo)的狀語(yǔ)從句中，謂語(yǔ)動(dòng)詞用過(guò)去式表示與現(xiàn)在相反的情況；用過(guò)去完成式，表示與過(guò)去相反的情況等。 It39。s a pity，a shame等名詞＋ that 從句中，謂語(yǔ)動(dòng)詞可以使用should do。如： What type of puter do you remend/ suggest we (should) buy? 你建議我們買(mǎi)什么類型的電腦呢？(5) 在It39。s required that every student be on time for school. 要求每個(gè)學(xué)生準(zhǔn)時(shí)到校。(3) 在It be suggested (ordered, demanded, proposed, … )that… 結(jié)構(gòu)中，主語(yǔ)從句中也要使用虛擬語(yǔ)氣。(2) 與上述動(dòng)詞相對(duì)應(yīng)的名詞suggestion, order, demand , proposal 等后的表語(yǔ)從句、同位語(yǔ)從句中也要使用虛擬語(yǔ)氣(should可省略)。如： He suggests that she (should) leave the house at once. 他要她立刻離開(kāi)這所房子。(將來(lái)) I wish that he had not made so much fuss about it. 我希望他不要把事情搞大了。(介詞短語(yǔ)with your help充當(dāng)虛擬條件句)2． 虛擬語(yǔ)氣在wish從句中的用法專題八 │ 正面解讀　賓語(yǔ)從句愿望I wish　　主語(yǔ)＋動(dòng)詞過(guò)去式現(xiàn)在不能實(shí)現(xiàn)的愿望主語(yǔ)＋had＋過(guò)去分詞過(guò)去不能實(shí)現(xiàn)的愿望主語(yǔ)＋would/might＋動(dòng)詞原形將來(lái)不能實(shí)現(xiàn)的愿望I wish I were a doctor. 我希望我是個(gè)醫(yī)生就好了。如： But for air and water, there would be no life on the earth. 要是沒(méi)有空氣和水，地球上就沒(méi)有生命。如：If he were to e, I would join him in the discussion. ＝ Were he to e, I would join him in the discussion. 如果他來(lái)，我將和他一道參加討論。t do it much better like this. 如果他不聽(tīng)我的建議，他就不會(huì)干得這么好了。如： If they had studied hard, they could do it easily now. 如果他們以前努力學(xué)習(xí)的話，現(xiàn)在干得就會(huì)容易些了。但在if I were you中，不能說(shuō)成if I was you。(可惜當(dāng)時(shí)沒(méi)能及時(shí)做) 注意：(1) 主句中的should通常用于第一人稱，would可用于任何人稱。1． 虛擬語(yǔ)氣在條件句中的用法 　if從句主句與現(xiàn)在事實(shí)相反if＋主語(yǔ)＋動(dòng)詞過(guò)去式主語(yǔ)＋should/would/could/might＋動(dòng)詞原形與過(guò)去事實(shí)相反If ＋主語(yǔ)＋had＋過(guò)去分詞主語(yǔ)＋should/would/could/might＋ have＋ 過(guò)去分詞與將來(lái)事實(shí)相反(1) if＋主語(yǔ)＋動(dòng)詞過(guò)去式主語(yǔ)＋should/would/could/ might＋動(dòng)詞原形(2)if＋主語(yǔ)＋were to＋動(dòng)詞原形(3) if＋主語(yǔ)＋should＋動(dòng)詞原形If it were to rain tomorrow, I should not drive my car. 如果明天下雨的話，我就不開(kāi)車了。t have to go to work today.t have wakened me up。 couldhave done；would have done本來(lái)可能做……而未做；本可以做……而未做；本來(lái)會(huì)做……而未做①He might have given you more help, even though he was very busy.②We could have walked there, and it was so near.與過(guò)去事實(shí)相反的虛擬表達(dá) 情態(tài)動(dòng)詞意義 例句 備注 should/ought to have done本應(yīng)該做……而未做 Your brother has failed English exam again. You ought to have given him more help. 表示責(zé)備need