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. .情態(tài)動(dòng)詞語法填空一、情態(tài)動(dòng)詞的基本用法(表能力)【典例1】 Im going to Europe on vacation together with John if I _ find the money.(2012全國) 解析句意:如果我現(xiàn)在能有足夠的錢,我將和約翰一起去歐洲度假。本題考查情態(tài)動(dòng)詞表能力。 答案can【典例2】 The fire spread through the hotel very quickly but everyone_get out.(全國) 解析was able to表示經(jīng)過努力能夠做到,強(qiáng)調(diào)成功。句意:大火很快蔓延了整個(gè)賓館,但是大家都成功地離開了。根據(jù)語境可知,強(qiáng)調(diào)成功地逃出。 答案was able to 例句: We_finish it ahead of time,though it was such a tough task. 解析句意:盡管這是一項(xiàng)艱巨的任務(wù),我們還是提前完成了。be able to表示經(jīng)過一番努力做成某事。 答案were able to She was very brave.Even though shed hurt her leg,she_go back alone. 解析句意:她很勇敢,盡管她腿受了傷,她仍然設(shè)法獨(dú)自回家。was able tomanaged to表示設(shè)法成功做某事。 答案was able to幾個(gè)基本情態(tài)動(dòng)詞的用法:cancould1.表許可(和may可互換)、能力2.表懷疑、猜測、可能性(用于否定和疑問句中)3 .could可表比can更委婉的語氣及用于虛擬語氣。You can/may sit here./He can swim. Could you come again tomorrow?He cant be sixty.can和be able to都可表能力,但be able to可表達(dá)“某事終于成功”,有更多的時(shí)態(tài)。may&might1. 表可以(問句中表請求,might更婉轉(zhuǎn))2. 表可能,或許(might語氣更加不肯定)3. 表祝愿(用于倒裝句中)a. May/Might I use your bike?b.He may/might be at home.c. May you succeed!注意: 回答Maydo?的否定用 mustnt/cant 回答May/Mightdo?的否定用 cant/might notmust1.表必須,應(yīng)該(表主觀要求)2.表推測(用于肯定句),譯為“準(zhǔn)是,一定”1 You must study hard.2 She must be tired.否定式mustnt表不準(zhǔn),禁止;否定回答用neednt/dont/doesnt have to(不必)have to只好,不得不(客觀的必須,有時(shí)態(tài)人稱變化)Without help, I had to do it myself. 其中must表主觀意識。have to有多種時(shí)態(tài)。ought to應(yīng)當(dāng)(表示義務(wù)責(zé)任,口語中多用shouldYou ought to obey laws.否定用oughtnt 疑問句用Oughtto do?shall1.用于一三人稱的疑問句,表征詢意見2.用于二三人稱, 表示許諾、命令、警告等例句:1 Shall we go now?2 The sign there reads, “No person shall smoke here.”should1.表建議或勸告,譯為“應(yīng)該”2.本該(含有責(zé)備意味)例句:1 You should learn from each other.2 You should have given him help.will&would1.表意志或決心2.疑問句中用于第二人稱表請求,would比較委婉例句:1 He promised he would never smoke again.2 Will/Would you like some tea?would表示過去的習(xí)慣或喜好,不涉及現(xiàn)在; used to表示過去常常做現(xiàn)在已經(jīng)不再有的習(xí)慣.dare敢(常用于否定句、疑問句和條件從句中)例句:He dare not/darent sleep alone.Dare you touch it?過去式dared;可作實(shí)義動(dòng)詞need需要,必須(常用于否定句和疑問句中)例句:You neednt do the work now.Needdo?肯定回答:Yes,must. 可作實(shí)義動(dòng)詞used to過去常常(現(xiàn)在已不再)He used to play football.否定式usednt/usent to do/didnt use to do; 疑問Usedtodo?Diduse to do?3、表示“能力”的情態(tài)動(dòng)詞有:can,could,be able to(1)情態(tài)動(dòng)詞can只有兩種時(shí)態(tài)形式,現(xiàn)在時(shí)can和過去式could,而be able to有多種時(shí)態(tài)形式。Mary can play the piano.She has been able to play it since she was five.瑪麗會(huì)彈鋼琴,她5歲起就會(huì)彈了。(2)表示過去能力時(shí),was/were able to表示經(jīng)過一番努力后取得了成功。相當(dāng)于manage to do或succeed in doing,而could沒有這個(gè)含義。Yesterday I was able to get home before the heavy rain.昨天我在下大雨前趕到了家里。 情態(tài)動(dòng)詞的基本用法(表必要、義務(wù)、責(zé)任)【典例3】 I dont care what people think.Well,you_ 解析句意:我不介意別人怎么想。噢,你應(yīng)該那么做。根據(jù)語境可知,應(yīng)選should,意為“應(yīng)該”,表示一種建議,勸說。 答案should【典例4】I _ use a clock to wake me up because at six oclock each morning the train comes by my house.(2012新課標(biāo)全國) 解析句意:我不必用鐘表喚醒自己,因?yàn)榛疖嚸刻煸缟狭c(diǎn)經(jīng)過我的房子。根據(jù)原因狀語從句的內(nèi)容可知此處表示的是“不必”。 答案neednt3Parents_send their children to school when they reach six years old. 解析句意:當(dāng)孩子滿六歲時(shí),家長應(yīng)當(dāng)送孩子去上學(xué)。根據(jù)語境可知,應(yīng)填ought to,表示有責(zé)任,從法律或道義上“應(yīng)該”做。 答案ought to4What do you think we can do for our aged parents?You_do anything except to be with them and be yourself. 解析句意:為了我們年邁的父母,你認(rèn)為我們可以做些什么事呢?你不必做任何事情,只要能真情地陪伴他們。dont have toneednt表示“不必”,符合語境。 答案dont have to或neednt表示“必要性”的情態(tài)動(dòng)詞通常有:must,should,ought to,have to注意:(1)ought to與should意思大體相同,但ought to語氣比should重,往往表示從法律或道義上“應(yīng)該”。You are his father and ought to take care of him.你是他父親,應(yīng)當(dāng)照顧他。(有責(zé)任,從道義上應(yīng)該)Young people should show respect to the old.年輕人應(yīng)該尊重老年人。(2)have to表示“必須,不得不”,這個(gè)意義與must很接近,但must表示主觀意志,而have to表示由于客觀因素不得不做某事。I told her that she must give up smoking.我叫她必須戒煙。I have to hand in my term paper before 5:00 pm.today.我必須今天下午5點(diǎn)前交學(xué)期論文。 4、情態(tài)動(dòng)詞的基本用法(表請求、允許、命令、禁止)【典例5】 The new law states that people _ drive after drinking alcohol.(2012上海) 解析句意:新頒布的法律禁止人們酒后駕車。 答案mustnt【典例6】 One of our rules is that every student _ wear school uniform while at school.(2012遼寧) 解析句意:我們的規(guī)章制度之一就是在校時(shí)每個(gè)學(xué)生都應(yīng)該穿校服。shall用于第二、三人稱陳述句中,表示法律規(guī)定時(shí),意為“應(yīng)該”。 答案shall【典例7】 Will you read me a story,Mummy?OK.You _ have one if you go to bed as soon as possible.(2011陜西) 解析句意:媽媽,給我講個(gè)故事好嗎?好,如果你盡快上床睡覺,我就給你講一個(gè)。shall在此處表示“允諾”。 答案shall 5You _ park here!Its an emergency exit. 解析句意:你不可以在此停車!這是緊急出口。mustnt表示“禁止”。 答案mustnt6_ I take the book out?Im afraid not. 解析句意:我可以把書帶出去嗎?恐怕不能。請求對方允許時(shí)常使用can或may。 答案May或Can7I cant leave.She told me that I _ stay here until she comes back. 解析句意:我不能離開。她告訴我在她回來之前我必須待在這里。 答案must 5、 “偏義”大本營情態(tài)動(dòng)詞(1)表示過去經(jīng)過努力而成功地做了某件具體的事情時(shí),只能用was/were able to,不用could。(2)must有一種含義,即“偏要”。(3)shall可以用于第二、第三人稱,表示說話人的允諾、命令、警告、威脅等;在法律、條約、協(xié)定等文件中可以表示義務(wù)、規(guī)定等。(4)will可以表示意愿。will還可以表示經(jīng)常性、習(xí)慣性、傾向性等,意為“經(jīng)常,慣于,總是”。(5)should表示驚異、意外等情緒,經(jīng)常用于疑問句和肯定句中,多譯為“竟然,居然”。6、情態(tài)動(dòng)詞表推測的用法(肯定推測)【典例8】 Good morning.Ive got an appointment with Miss Smith in the Personnel Department.Ah,good morning.You _ be Mrs.Peters.(2010北京) 解析第一個(gè)說話人說和史密斯小姐有約,那下面的人就回應(yīng)說,“那您一定就是Mrs.Peters了”,因此用must。 答案must【典例9】 What do you mean,there are only ten tickets?There _ be twelve. 解析你這是什么意思,只有十張票嗎?應(yīng)該有十二張。should表示“應(yīng)該,應(yīng)當(dāng)”。 答案should【典例10】 Some people who dont like to talk much are not necessarily shy;they _ just be quiet people. 解析言語不多的人未必就靦腆,他們可能只是好靜而已。may或許。 答案may 8“You _ have a wrong number,”she said.“Theres no one of that name here.” 解析考查情態(tài)動(dòng)詞。從“Theres no one of that name here.”可知“你一定弄錯(cuò)號碼了”。此處表示“肯定的推測”,故用must。 答案must9Peter _ be really difficult at times even though hes a nice person in general. 解析根據(jù)句意中的at times可知,Peter有時(shí)真的很難相處。can表示推測,意為“可能會(huì)”。 答案can10Where will you start your work after graduation?Mmm,its not been decided yet.I_continue my study for a higher degree. 解析由its not been decided yet可知,“我”對此并不確定,因此后面的情態(tài)動(dòng)詞用might,表示可能性不是很大。 答案might 注意:1must用于肯定句,表示較有把握的推測,意為“準(zhǔn)是,一定”。2should用于肯定句中,語氣次之,意為“很可能,應(yīng)該”,指按常理推測。3can用在肯定句中,表示理論上的可能性。如:Smoking can cause cancer.吸煙有可能引起癌癥。4may用在肯定句中,表示對現(xiàn)在把握不大的推測,意為“也許,可能”。5could,might也可表示推測意義,常用在過去時(shí)態(tài)中;但在某些場合下,為了使語氣更緩和、更委婉,常用could,might代替can,may。如:They saw something in the sky last night.It could/might be a UFO.昨天晚上他們看見天空中有個(gè)東西。它有可能是不明飛行物。 二用適當(dāng)?shù)那閼B(tài)動(dòng)詞或虛擬語氣填空1(2013北京,35)You neednt take an umbrella. It isnt going to rain.Well,I dont know. It_do. 解析考查情態(tài)動(dòng)詞。第一個(gè)人說不會(huì)下雨,第二個(gè)人回答I dont know,因此可知,到底下不下雨是不能肯定的事情,故使用might表推測“有可能”。答案might2(2013遼寧,31) Harry is feeling much too uncomfortable. He _(drink) too much at the party last night. 解析考查情態(tài)動(dòng)詞。此處考查情態(tài)動(dòng)詞對過去發(fā)生事情的推測。句意:Harry感覺不舒服。昨晚的聚會(huì)上他肯定喝得不少。對過去發(fā)生事情的肯定推測,用must have done。答案must have drunk3(2013四川,5) Why are your eyes so red? You_have slept well last night. Yeah,I stayed up late writing a report. 解析考查情態(tài)動(dòng)詞。根據(jù)語境“眼睛那么紅,昨晚不可能睡得很好”可知,此處考查情態(tài)動(dòng)詞can的否定式cant表推測,意為“不可能”。cant have done表示對過去的推測,意為“過去不可能”。答案cant4(2013天津,9)No one_ be more generous;he has a heart of gold. 解析考查情態(tài)動(dòng)詞。句意:不可能有人比他更慷慨;他有一顆善良的心。cant/couldnt表不可能。答案could5(2013新課標(biāo),29)The door_open,no matter how hard she pushed. 解析考查情態(tài)動(dòng)詞。此處描述主語the door的特點(diǎn)“老是打不開”,其固有的特性,用情態(tài)動(dòng)詞would(will)描述。答案wouldnt6(2013北京,34)If we_(book)a table earlier,we couldnt be standing here in a queue. 解析考查虛擬語氣。句意:如果我們早點(diǎn)訂桌的話,我們就不可能在這里站著排隊(duì)了??芍猧f從句是對過去的虛擬,用過去完成時(shí)態(tài)。答案had booked7(2013福建,30)Do you think George has passed the driving test?No.If so,he _(drive)his car to our college yesterday. 解析考查虛擬語氣。句意,如果這樣的話(喬治已經(jīng)通過駕照考試),他昨天就駕車來我們大學(xué)了,可知是對過去的虛擬。If soIf he had passed the driving test,主句使用情態(tài)動(dòng)詞 have done。答案would have driven8(2013陜西,12)My mom suggests that we _ eat out for a change this weekend. 解析考查虛擬語氣。題干關(guān)鍵詞為suggest,表示建議,其后所接的名詞性從句應(yīng)用“(should)動(dòng)詞原形”的虛擬語氣。 答案should9(2013浙江,8)Eye doctors recommend that a childs first eye exam _(be)at the age of six months old. 解析考查虛擬語氣。題干關(guān)鍵詞為recommend,表示“推薦,建議”,后接賓語從句時(shí)應(yīng)用(should)動(dòng)詞原形的虛擬語氣,此處省去了should。 答案be10(2013安徽,28)I_(go)to my cousins birthday party last night,but I was not available. 解析考查虛擬語氣。句意:昨晚我本想要去參加我表親的生日聚會(huì),但我沒空。表示對過去虛擬用情態(tài)動(dòng)詞過去式后加have done表示。 答案would have gone7、情態(tài)動(dòng)詞表推測的用法(否定與疑問推測)【典例11】 I dont really like James.Why did you invite him?Dont worry.He _ come.He said he wasnt certain what his plans were.(2011北京) 解析根據(jù)he wasnt certain可知,James可能不來。 答案might not【典例12】 Hows your new babysitter?We _ ask for a better one.All our kids love her so much.(2011浙江) 解析考查情態(tài)動(dòng)詞的用法。句意:你的新保姆怎么樣?找不到更好的了。我們的孩子們很喜歡她。couldnt不可能。 答案couldnt【典例13】 _it be Tom that stole the managers mobile phone?No.As far as I know,Tom is very honest. 解析考查情態(tài)動(dòng)詞表示推測的用法。can可用于否定句或疑問句中表示推測;句意:有可能是Tom偷了經(jīng)理的手機(jī)嗎?不可能。就我所知,湯姆是非常誠實(shí)的。 答案Can 11(2011江西)It _ be the postman at the door.Its only six oclock. 解析根據(jù)Its only six oclock推知,那不可能是郵遞員,否定形式推測要用cant或couldnt。因?yàn)閙ust表推測時(shí),只能用于肯定句。 答案cant12I _ thank you too much for all your help to my son while we were away from home. 解析cant.too.為固定結(jié)構(gòu),意為“無論也不過分;越越好”。 答案cant13If you dont want to go swimming,you _ as well stay at home.Actually,it is up to you to decide. 解析may/might as well構(gòu)成習(xí)慣搭配,意為“倒不妨”。 答案may 8、情態(tài)動(dòng)詞表推測的用法 (否定與疑問推測)1)否定推測(1)表示否定的推測時(shí),cant/couldnt語氣最強(qiáng),指“不可能”,帶有驚異、懷疑的感情色彩。如:The story sounds reasonable,but it cant be true.這個(gè)故事聽起來合情合理,但不可能是真的。(2)語氣不很肯定時(shí),常用may not或might not表否定推測,意為“可能不,也許不”。如:He may not/might not be at home.他可能不在家。2)疑問句中的推測疑問句中的推測,常用can或could,意為“可能”。如:Who can it be?Can it be Jenny?那能是誰呢?是瑪麗嗎?3)情態(tài)動(dòng)詞表推測的三種時(shí)態(tài)(1)對將來情況的推測,用“情態(tài)動(dòng)詞動(dòng)詞原形”。She must arrive before 5.5:00前她一定到。(2)對現(xiàn)在或一般情況的推測,用“情態(tài)動(dòng)詞be”,“情態(tài)動(dòng)詞be doing”或“情態(tài)動(dòng)詞動(dòng)詞原形”。He must/may be listening to the radio now.他一定/可能正在聽收音機(jī)。 4)“情態(tài)動(dòng)詞have done”表推測的用法 (1)“情態(tài)動(dòng)詞have done”表推測的真題【典例14】 Happy birthday!Thank you!Its the best present I _(wish)for.(2012江蘇) 解析句意:生日快樂!謝謝!這是我原來希望能夠得到的最好的禮物。 答案could have wished【典例15】 We _ have bought so much food now that Suzie wont be with us for dinner.(2012江西) 解析考查情態(tài)動(dòng)詞。句意:既然Suzie不和我們一起吃晚飯,那我們就沒有必要買這么多食物。根據(jù)“now that Suzie wont be with us for dinner”可知答案,neednt have done表示“本沒有必要做某事而實(shí)際上卻做了”。 答案neednt【典例16】 He did not regret saying what he did but felt that he _(express)it differently. 解析掌握情態(tài)動(dòng)詞的完成結(jié)構(gòu)的用法是解此題的關(guān)鍵。could have expressed本來能夠表達(dá)。 答案could have expressed 14We _(face)the difficulty together,but why didnt you tell me? 解析考查情態(tài)動(dòng)詞。句意:我們本可以共同面對困難,但是你為什么不告訴我呢?后半句用的是一般過去時(shí),由此可知前半句是對過去情況的一種虛擬,所以用“情態(tài)動(dòng)詞have done”形式。could have done表示過去本可以做某事,而實(shí)際上卻沒有做,符合句意。 答案could have faced15Jack described his father,who _(be)a brave boy many years ago,as a strongwilled man. 解析根據(jù)語境可知,此處表示的是對過去事實(shí)的推測,所以用must have done結(jié)構(gòu)。注意句中有一個(gè)非限制性定語從句將主句分隔開了。 答案must have been16I left my handbag on the train,but luckily someone gave it to a railway official.How unbelievable to get it back!I mean,someone _(steal)it. 解析句意:我把手提包落在火車上了,不過,幸運(yùn)的是,有人把它交給了乘警。把包拿回來是多么不可思議?。∥业囊馑际?,有人可能偷了你的包??疾榍閼B(tài)動(dòng)詞。might have stolen可能已經(jīng)偷了,符合語境。 答案might have stolen (2)“情態(tài)動(dòng)詞have done”表推測的用法(注意)(1)must have done“一定已經(jīng)做了”,表肯定推測,否定式為cant/couldnt have done;(2)can/could have done表示“本來能夠做,卻沒有”,或“過去可能會(huì)”;(3)may/might have done不用于疑問句,表示“也許;或許已經(jīng)做了”;(4)should/ought to have done意為“本該做了,但未做”,否定式shouldnt/ought not to have done意為“本不該做,但做了”。它們都暗含對其責(zé)備;(5)neednt have done表示“做了本沒有必要做的事”;(6)would rather have done意為“寧愿當(dāng)時(shí)做過某事”,否定式would rather not have done意為“寧愿當(dāng)時(shí)沒有做過某事”。它們表示后悔之意。 9、虛擬語氣(在條件句中的運(yùn)用) 【典例17】 Sorry,I am too busy now.If I _(have)time,I would certainly go for an outing with you.(2012湖南) 解析句意:對不起,我現(xiàn)在太忙了。如果我現(xiàn)在有時(shí)間的話,我會(huì)和你一起出去郊游。根據(jù)句意以及句中的now可知,此處表示對現(xiàn)在情況的一種假設(shè),所以從句中謂語動(dòng)詞要用過去式,而主句用“could/would/should/might動(dòng)詞原形”。 答案had【典例18】 Maybe if I _(study)science,and not literature then,I would be able to give you more help.(2011北京) 解析考查錯(cuò)綜時(shí)間的虛擬語氣。主句用的是would be able to.表示對現(xiàn)在情況的假設(shè),但由if從句中的then可知,從句表示對過去情況的虛擬,故用had studied。 答案had studied【典例19】 This printer is of good quality.If it _ break down within the first year,we would repair it at our expense. 解析第一句話用了一般現(xiàn)在時(shí),第二句話的主句卻出現(xiàn)了would,這暗示條件句中使用了虛擬語氣。由語境可知這里是對將來的虛擬,條件狀語從句中可以用“動(dòng)詞過去式/should動(dòng)詞原形/were to動(dòng)詞原形”這三種形式中的某一種?!皊hould”此時(shí),常譯為“萬一”。 答案should 17If he _(follow)my advice,he wouldnt have lost his job. 解析考查虛擬語氣。此處表示與過去的事實(shí)相反,故從句應(yīng)用過去完成時(shí)。句意:如果他當(dāng)初聽我的勸告的話,他就不會(huì)失去工作了。 答案had followed18_ I be free tomorrow,I would go with you. 解析與將來事實(shí)相反的虛擬語氣,should I be free tomorrow是省略的倒裝形式,正常結(jié)構(gòu)是If I should be free tomorrow。句意:如果明天我有空的話,我將與你一起去。 答案Should19_(understand)the problem,he wouldnt have committed those mistakes. 解析表示與過去事實(shí)相反的虛擬語氣。had he understood the problem是省略的倒裝形式,正常結(jié)構(gòu)是If he had understood the problem。句意:如果他理解了這個(gè)問題,他就不會(huì)犯那些錯(cuò)誤。 答案Had he understood(或If he had understood) 虛擬語氣(在名詞性從句中的運(yùn)用)【典例20】 Where are the children?The dinners going to be completely ruined.I wish they _(be)always late.(2011北京) 解析句意:孩子們都到哪里去了?這頓飯就要被他們徹底破壞了。我希望他們不要總是遲到。wish后跟that從句,從句部分采用虛擬語氣,與現(xiàn)在事實(shí)相反的用一般過去時(shí),與過去事實(shí)相反的用過去完成時(shí)。本題表示與現(xiàn)在事實(shí)相反,所以用一般過去時(shí)。 答案werent【典例21】 Jack is a great talker.Its high time that he _(do)something instead of just talking.(2012遼寧) 解析句意:Jack總愛夸夸其談,他該做點(diǎn)事了,而不是僅僅空談。這里是“Its(high/about)time that.”句型,從句謂語應(yīng)用過去式或“should動(dòng)詞原形”。 答案did 20Its suggested that some activities _(hold)to celebrate the 30th anniversary of the Reform and Opening up. 解析考查主語從句的虛擬語氣。題干中的suggest意為“建議”,所以that引導(dǎo)的主語從句要用虛擬語氣,表達(dá)形式為“should動(dòng)詞原形”,should可以省略。句意:有人建議應(yīng)當(dāng)舉辦一些活動(dòng)來慶祝改革開放第30周年。 答案be held21He gave us advice that this work _(cancel) 解析“工作”與“取消”之間為被動(dòng)關(guān)系。advice的同位語從句用虛擬語氣。句意:他建議我們不要取消這項(xiàng)工作。 答案not be cancelled22I would rather they _(come)tomorrow. 解析would rather后的賓語從句中表示對將來的愿望時(shí),要用過去時(shí)。句意:我寧愿他們明天來。 答案came 10、虛擬語氣在名詞性從句中的運(yùn)用(1)用于賓語從句中wish后面的賓語從句一般用虛擬語氣,表示一種不可能實(shí)現(xiàn)的愿望。其謂語動(dòng)詞構(gòu)成形式為:過去時(shí)(賓語從句動(dòng)作與wish同時(shí))過去完成時(shí)(賓語從句動(dòng)作先于wish)could/would/might動(dòng)詞原形,即過去將來時(shí)(賓語從句動(dòng)作后于wish)表示建議、愿望、命令等詞后的賓語從句常用虛擬語氣,常見的動(dòng)詞有:demand,order,require,insist,suggest等。賓語從句中的虛擬語氣結(jié)構(gòu)為“should動(dòng)詞原形”,should可以省略。如:He suggested that we should start off early the next day.他建議我們第二天早點(diǎn)出發(fā)。(2)用于主語從句中It is desired / suggested/ necessary /important / strange / naturalthat從句,從句中的謂語動(dòng)詞用“should動(dòng)詞原形”,should可省略。(3)用于表語從句和同位語從句中在suggestion,proposal,order,plan,idea,request等名詞后的表語從句和同位語從句中要用虛擬語氣,其構(gòu)成是“should動(dòng)詞原形”,should可省略。My idea is that we(should)think it over before accepting it.我的意見是在接受之前要反復(fù)考慮。 虛擬語氣(在其他句式中的用法)【典例22】 Grace doesnt want to move to New York because she thinks if she _(live)there,she wouldnt be able to see her parents very often.(2012安徽)解析句意: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。根據(jù)wouldnt 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”。答案were to live【典例23】 Dont handle the vase as if it _(be)made of steel.(2012北京)解析句意:不要這么拿著這個(gè)花瓶,就好像它是鋼制成似的。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,并且所述情況是對現(xiàn)在事實(shí)的假設(shè),因此使用一般過去時(shí)。答案were【典例24】 We lost our way in that small village,otherwise we _(visit)more places of interest yesterday.(2012福建)解析句意:我們在那個(gè)小村莊迷路了,要不然,我們昨天能參觀更多的名勝。根據(jù)語境可知空格處所表達(dá)的意思與過去事實(shí)相反,需用“should/would/could/mighthave過去分詞”結(jié)構(gòu)。答案would have visited 23I _(come)sooner but I didnt know that they were waiting for me.解析考查虛擬語氣。本題選項(xiàng)中既有表示過去事實(shí)的動(dòng)詞,又有表示過去動(dòng)作的虛擬。句意:我不知道他們一直在等我,要不然我肯定會(huì)迅速點(diǎn)兒。根據(jù)句意可知,這里是對過去的虛擬,故用“would have done”的形式。答案would have come 黃金口訣虛擬用在名從中,should do結(jié)構(gòu)要記清;一個(gè)堅(jiān)持兩命令,三個(gè)建議四要求;It做主后有形,奇怪重要自然行;Wish之后有賓從,虛擬時(shí)態(tài)退一層;As if/if only/would rather,時(shí)態(tài)也要退一層;Its high time that sb did sth.此種形式要記清。 11、用適當(dāng)?shù)那閼B(tài)動(dòng)詞或虛擬語氣填空1He _(become)fatter but he eats too little.解析根據(jù)語意知道我們可以在but he eats too little前加上一個(gè)省去的條件狀語從句if he ate much,由此可知是與現(xiàn)在時(shí)相反所以主句用would become。答案would become2He _(praise)if he works hard for the people.解析句意:如果他為人民努力工作,他會(huì)受到表揚(yáng)。說話人希望他受到表揚(yáng),而will表示的是句子的主語的意愿,那樣意思就是“他愿意受到表揚(yáng)”,顯然不對。答案shall be praised3There was a lot of fun at yesterdays party.You _ come,but why didnt you?解析該空含你本來應(yīng)來但實(shí)際未來之意,應(yīng)填ought to have。答案ought to have4I was really anxious about you.You _(leave)home without a word.解析該空含你本不應(yīng)該一句話不說就離開家但實(shí)際已這么做之意,所以應(yīng)填shouldnt have left。答案shouldnt have left5Must I go there right now?No,you _You _ go there before supper.解析Must I.?肯定回答用Yes,you must.否定回答是No,you neednt或No,you dont have to,不能用mustnt,因?yàn)閙ustnt表示“不許;不準(zhǔn);禁止”,本題后半部用may表示允許。答案neednt;may6Could I borrow your dictionary?Yes,of course you _解析本題中的could也表示請求(而非表示過去時(shí)),語氣委婉,主要用于疑問句,不可用于肯定句,答語應(yīng)該用can(即could不能用于現(xiàn)在時(shí)態(tài)的簡略答語中)。答案can7Are you coming to Jeffs party?Im not sure.I _ go to the concert instead.解析根據(jù)Im not sure判斷,表示說話者不確定,有可能去音樂會(huì)。答案might8Mr.Bush is on time for everything.How _ it be that he was late for the opening ceremony.解析can表示可能性的推測,常用于疑問句或否定句中。答案can9My sister met him at the Grand Theatre yesterday afternoon,so he _(attend)your lecture.解析cant(couldnt)have done表示對過去的否定性推測,意為“不可能”。所提供的情境My sister met him at the Grand表示他不可能參加講座。答案couldnt have attended10He hesitated for a moment before kicking the ball,otherwise he _(score)a goal.解析根據(jù)otherwise可以判斷出要用虛擬語氣表示過去發(fā)生的事要用would have scored。答案would have scored

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