1、考前必讀高考研究英語中常用的情態動詞主要有can，could，may，might，must，will，would，shall，should，ought to，dare，need，used to，had better等。在學習情態動詞時應注意以下幾點：同一情態動詞表示不同的意義的情況；情態動詞后跟各種形式的用法；特別是注意“情態動詞+完成式是高考中的重點所在。高考中的虛擬語氣一般與情態動詞結合進行考查。每年高考試題中都會出現一定的題目。易錯點睛易錯點1 混淆“情態動詞+have done各種句式的不同含義【易錯題1】he did not regret saying what he did but

2、 felt that he         it differently.a. could express                        b. would expressc. could have expressed     

3、;            d. must have expressed【易錯題2】where is my dictionary? i remember i put it here yesterday.you it in the wrong place.a.must put b.should have putc.might put d.might have put【解析】考生容易誤選a項，原因是受漢語表達習慣的影響，認為“你一定是把它放錯地方了。根據前面的語境可判斷出，此題考查情態動詞表

4、推測的用法。所以要用“might have done。“should havedone"表示“(過去)本來應該做某事。must意為“一定，是肯定的推測，與所提供的情景矛盾。might put表示現在發生的事。【答案】d【錯因透視】maymight have done表示“過去可能做了(某事)。如：一where is my pen?我的鋼筆哪里去了?一you might have put it in your pocket你可能把它放到你的口袋里了。【易錯題3】mr. white _ at 8:30 for the meeting, but he didn't' sho

5、w up. a. should have arrived b. should arrivec. should have had arrived d. should be arriving【易錯題4】she looks very happy. she _ have passed the exam. i guess so. its not difficult after all.a. should b. could c. must d. might【錯因透視】must+have+過去分詞表示對過去情況的推測，表示“(過去)一定、必定做了某事。must接動詞原形表示對現在情況的猜想。如：tom mu

6、st have finished his homework yesterday because he went camping with his parents湯姆昨天一定是完成作業了，因為他和父母去野營了。【易錯題5】-catherine, i have cleaned the room for you. -thanks. you_it. i could manage it myself.aneedn't do bneedn't have done cmustn't do dshouldn't have done【解析】考生容易誤選d項，認為是“你本來不應該做

7、那件事情。句子意思是：“凱瑟琳，我已經給你清掃了房間。“謝謝。你本來沒有必要清掃的，我自己能夠對付。neednt have done表示“過去本來沒有必要做而做了；shouldnt have done表示“過去本來不應該做而做了。【答案】b【錯因透視】neednt have done表示“本來沒必要做而做了，是對過去情況的虛擬。如：you neednthave told him that你本沒必要告訴他那件事。易錯點2對情態動詞的根本用法掌握不熟練【易錯題l】 its the office! so you know eating is not allowed here. oh, sorry.a

8、. must b. will c. may d. need【易錯題2】some people who dont like to talk much are not necessarily shy; they _ just be quiet people.a. must b. may c. should d. would【解析】考生容易誤選c項，認為是“一定是，實際上這里表示可能性。句子意思是：有些不愿多講話的人并不是真的害羞；他們可能只是一些喜歡安靜的人。【答案】b【錯因透視】maymight接動詞原形表示對現在情況的推測，意思是“可能。如：she thought itmight be wis

9、e to try her luck here她認為在這兒碰碰運氣也許不錯。【易錯題3】一what does the sign over there read? 一“no person _ smoke or carry a lighted cigarette，cigar or pipe in this areaawill bmay cshall d. must【解析】考生容易誤選a項，認為是will在這里表示將來或意愿。shall在本句中用于第三人稱，表示警告和禁止，因此答語的意思是：任何人都不準在這個區域吸煙、或攜帶點著的香煙、雪茄或煙斗。will表示現在的意志、愿望等，意為“要，希望；may

10、表示許可，或用于請求許可，意為“可，可以；must意為“必須，要，應當。【答案】c【錯因透視】shall用于第一、三人稱的疑問句，表示征求對方意見。此外它也可以用來表示說話人的命令、警告、允諾、威脅或決心等，這時它用于第二、三人稱的肯定句。如：shall she go to the concert with us this evening?(征求意見)you shall go to the front at once(命令)dont worryyou shall get theanswer this very afternoon(允諾)he shall be sorry one dayi te

11、ll you(警告)nothing shall stop us fromfighting against pollution(決心)易錯點3 對虛擬語氣在條件句中應用的根本用法了解不夠【易錯題1】this printer is of good quality. if it _ break down within the first year, we would repair it at our expense.a. would b. should c. could d. might【易錯題2】but for their help, we _ the program in time. a. ca

12、n not finish b. will not finish c. had not finished d. could not have finished【解析】考生容易誤選c項，原因是沒有注意到but for their help這一含蓄條件。由語境可知，這里表示與過去的事實相反，所以主句應該用wouldcouldmightshould+have done結構。【答案】d 【錯因透視】含蓄條件句的用法：【易錯題3】it is hard for me to imagine what i would be doing today if i _ in love, at the age of se

13、ven, with the melinda cox library in my hometown. a. wouldn't have fallen b. had not fallen c. should fall d. were to fall【錯因透視】錯綜條件句就是虛擬條件主句和從句的動作發生的時間不一致，因此，主句和從句的謂語動詞要根據各自所指的不同時間選擇適當的動詞形式。如：if 1 were you，1 would not have missed thefilm last night如果我是你，我就不會錯過昨晚的電影了。if they had started in the e

14、arly morning，theywould arrive in half an hour如果他們清早就出發，那么再有半個小時就到了。易錯點4 無視名詞性從句中虛擬語氣的用法【易錯題】the doctor recommended that you swim after eating a large meal.a. wouldnt b. couldnt c. neednt d. shouldnt 【解析】考生容易誤選b項，原因是不知道recommend的賓語從句中要用虛擬語氣。【答案】d【錯因透視】虛擬語氣經常用于表示意愿、建議、命令、提議、請求等動詞后的that賓語從句中，這類動詞有：advi

15、se建議，command命令，demand要求，desire渴望，insist堅持，intend打算，propose提議，order命令，require需要，request要求，recommend勸告。這些動詞的賓語從句中用should+動詞原形表示虛擬語氣，should可以省略。如：i suggest that we(should)set off at once我建議我們應該立刻出發。【易錯題2】how i wish every family _ a large house with a beautiful garden!春招)ahas bhad cwill have dhad had【易錯

16、題3】it is important that we ashall close the window before we leave bwill close the window before we 1eavecmust close the window before we leave dclose the window before we 1eave【解析】考生容易誤選c項，原因是沒有掌握主語從句中用虛擬語氣的用法。it is important(necessary，strange)that主語從句中，謂語用should+動詞原形表示虛擬語氣，should可以省略。【答案】d【錯因透視】虛擬

17、語氣用于it is+形容詞名詞過去分詞+主語從句的句式中，主語從句中用should+動詞原形，should可以省略。這類形容詞或分詞有：determined決定的，commanded命令的，arranged安排的，anxious焦急的，important重要的，desired想要，asked請求，natural自然的，insisted堅持，necessary必要的，suggested建議，ordered命令，proposed提議，requested要求的，required要求的，recommended推薦，possible可能的，a pity可惜的是，等。如：it is necessary t

18、hat he(should)besent there at once有必要立刻派他去那里。it is suggested that the meeting(should)be dut off till nextweek有人建議會議推遲到下星期。跟蹤練習市高三年級第一次質量檢測試題英語i was busy the other day, otherwise i _ to help you.awould have comebwould comechad comedcame市高三年級第一次質量檢測試題英語if you _ smoke, you could at least go to the smok

19、ing area.acanbmustcwilldshall【答案】b【解析】 考查情態動詞。句意：如果你非要抽煙，起碼可以去吸煙區抽。此處 must 表示“硬要；非要；偏要。市高中畢業年級第一次質量預測英語could i watch tv for 10 more minutes, mum?oh, dear, if you _.acanbmustcmaydshould市高中畢業班第一次調研測試英語just as jane is doing her homework, _ you bother her with playing the piano now?amaybcancmustdshall【答

20、案】c【解析】 考查情態動詞。句意：jane 正在寫作業，你偏要現在彈鋼琴打攪她嗎？這里 must 表示“偏要，非得，其他選項都無此用法，應選c項。市東城區高三第一學期期末教學統一檢測英語the driver _ have drunk a lot before the accident, but i am not quite sure of that.amightbmustcshoulddwould【答案】a【解析】 考查情態動詞。從后半句 “but i am not quite sure of that 可知空處是對過去發生事情的不肯定推測，因此選a市西城區高三上學期期末考試英語why ar

21、e you in such a hurry?dont you remember that we _ be home by 8 p. m. to see our favorite tv show?acanbwouldcmustdmay市重點高中高三尖子生綜合素質展示英語god! my cell phone is missing. you _ have left it at home. i heard you telephone our daughter in the bathroom.ashallbmustcwoulddcould市高三年級第一次模擬考試英語life _ be very hard

22、 for people living in the north of canada as it is very cold there in the winter.yes, the weather there _ be as low as 60 below zero.amust; canbshall; mustcwill; shoulddhas to; can【答案】a【解析】 考查情態動詞。根據后面的 “as it is very cold there in the winter 可知第一空表示肯定推測，故用 must，而第二空是對那兒天氣的一種可能性猜想，故用 can。市高三第一次教學質量檢

23、測英語come to supper with us, peter.great! i _ bring a bottle of wine.awillbcancmaydmust【答案】a【解析】 考查情態動詞。此處 will 表示的是說話人的主觀意愿，意為“愿；要。市高三第一次教學質量檢測英語the constant rise of meat price requires that effective measures _ by the government.amust be takenbbe takencwill be takendshould take省豐、樟、高、宜四市高三聯考英語our te

24、acher insisted that the key words worth paying attention _ before class.ato underlinedbwas underlinedcto be underlineddto being underlined【答案】c【解析】 考查虛擬語氣。分析句子結構可知，worth paying attention to 作 the key words 的后置定語；insist 表示“堅持主張時，其賓語從句使用虛擬語氣，謂語動詞使用 should do, should 可以省略，因此該從句謂語為 (should) be underlined，因此選擇c。解該題的關鍵在于弄清句子結構，不要受思維定勢的干擾而誤選d。省普通高中高三教學質量監測英語im really very busy, otherwise i _ certainly go there