九年級(jí)英語(yǔ)情態(tài)動(dòng)詞表推測(cè)用法總結(jié)

1、九年級(jí)英語(yǔ)情態(tài)動(dòng)詞表推測(cè)用法總結(jié)(一)情態(tài)動(dòng)詞表推測(cè)的三種句D能用于表推測(cè)的情態(tài)動(dòng)詞：must, can, could, will, would, may, might, should, ought to1 .在肯定句中一般用 must 定)，may (可能)，might / could (也許，或許)。(1) He must/may/might know the answer to this question?他一定/可能/也許知道這個(gè)問(wèn)題的答案。(2) It is cold in the room. They must have turned off the heating.屋里很冷，他們

2、肯定把暖氣關(guān)了。2 .否定句中用 can' t / couldnf可能),tmay not/might not風(fēng)能不)。(1) It can ' t/couldn ' t be the headmaster. He has gone to America.這不可能是校長(zhǎng)，他去美國(guó)了。(2) He may not/might not know the scientist.他也許不認(rèn)識(shí)那位科學(xué)家。(3) 問(wèn)句中用can/could能2)(1) Could he have finished the task?他可能把任務(wù)完成了嗎？(2) Can he be at home n

3、ow?他現(xiàn)在能在家嗎？注：以上三種句式中情態(tài)動(dòng)詞的語(yǔ)氣按程度都是依次遞減的。Might, could并非may, can的過(guò)去式，而表示語(yǔ)氣較為委婉或可能性較小。(二)情態(tài)動(dòng)詞表推測(cè)的三種"態(tài)1.對(duì)將來(lái)情況的推測(cè)，用情態(tài)動(dòng)詞+動(dòng)詞原形”。(1) She must / may / might / could arrive before 5.5:00前她一定/可能/也許到。(2) She must/may/might/could walk miles and miles among the hills without meeting anyone.她一定/可能/也許會(huì)在山里一連走好幾英里

4、而遇不到一個(gè)人。2 .對(duì)現(xiàn)在或一般情況的推測(cè)，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”。(1) He must / may / might / could be listening to the radio now.他一定/可能/也許正在聽(tīng)收音機(jī)。(2) He can ' t ( couldn ' t ) / may ( might ) not be at home at this time.這個(gè)時(shí)候他不可能/可能不在家。(3) Mr. Bush is on time for everything .How can ( co

5、uld ) he be late for the opening ceremony ?布什先生一向準(zhǔn)時(shí)，這次開(kāi)幕式他怎么可能遲到呢？3 .對(duì)過(guò)去情況的推測(cè)，用|情態(tài)動(dòng)詞+ have包去分詞。(1) It must / may / might / could have rained last night .The ground is wet.地濕了，昨晚肯定/可能/也許下雨了。(2) The door was locked. He can ( could ) not / may ( might ) not have been at home .門(mén)鎖著，他不可能/可能不在家。(3) Can / C

6、ould he have gotten the book ?難道他找到書(shū)了嗎？注：情態(tài)動(dòng)詞 should /ought to表推測(cè)時(shí)，意為 想必會(huì)，理應(yīng) "但與"have過(guò)去分詞”連用時(shí)，則又可構(gòu)成虛擬語(yǔ)氣意為茶應(yīng)該做某事卻沒(méi)做例如：(4) It ' s seven o ' clock. Jack should/ought to bnyhmoment.現(xiàn)在七點(diǎn)鐘了，杰克理應(yīng)隨時(shí)到達(dá)。(推測(cè))(5) She should / ought to have attended your birthday party, but she had to look afte

7、r her mother in hospital.(虛擬)她本該出席你的生日晚會(huì)的，可是她得在醫(yī)院照顧她媽媽。(6) Tom should not /ought not to have told me your secret, but he meant no harm. (虛擬)湯姆本不該告訴我你的秘密，可是他并無(wú)惡意。補(bǔ)充強(qiáng)調(diào)：推測(cè)的句型特點(diǎn)(對(duì)某一次的推測(cè)句型有兩部分：語(yǔ)氣和時(shí)態(tài))(1)語(yǔ)氣部分：(以下情態(tài)動(dòng)詞語(yǔ)氣由強(qiáng)至弱)肯定何： must、may、might (=could)否定句：can' (=couldn ') t> mayn'、t mightn &#

8、39; t疑問(wèn)句：can、could (語(yǔ)氣更加委婉不確定)(2)時(shí)態(tài)部分：be表示對(duì)匠|的推測(cè)have done表示對(duì)|過(guò)去卜勺推測(cè)be doing表示對(duì)正在進(jìn)行的推測(cè)語(yǔ)氣部分寫(xiě)在前時(shí)態(tài)部分寫(xiě)在后，組合在一起就是推測(cè)(三)幾組表推測(cè)的情態(tài)動(dòng)詞用法情態(tài)動(dòng)詞+完成時(shí)”是歷年高考的熱點(diǎn)，在做此類(lèi)練習(xí)時(shí)，既需要掌握這一結(jié)構(gòu)的基本用法，又應(yīng)該仔細(xì)體會(huì)題干所提供的語(yǔ)言信息，準(zhǔn)確理解語(yǔ)言環(huán)境和說(shuō)話人的含義，尤其要注意題干中時(shí)態(tài)給予的暗示。l.must have done表示對(duì)已經(jīng)發(fā)生的事情的推測(cè)，意為定，想必”句子中表示的是一種肯定的推測(cè)。這種結(jié)構(gòu)一般只用于肯定句，其否定形式是can ' ( co

9、uldn )' have done ,表示 不可能，肯定不會(huì)”。例 如:He didn ' t hear the phone . He must have been asleep.他沒(méi)有聽(tīng)到電話響，他肯定是已經(jīng)睡著了。He must have been to Shanghai.他一定去過(guò)上海。They can t have gone out , because the light is on .他們不可能出去，因?yàn)闊袅林?. can （could） have done表示對(duì)過(guò)去的時(shí)間內(nèi)可能發(fā)生的事情的猜測(cè)，can have done 一般只用于否定句和疑問(wèn)句。could ha

10、ve done 還可以用于肯定句，常用來(lái)表示本來(lái)可能完成而實(shí)際未完成的動(dòng)作。例如：He can t have finished the work so soon.這項(xiàng)工作他不可能完成得這樣快。We could have walked to the station , it was so near .我們本來(lái)是可以走到車(chē)站去的，路很近。3. may（ might） have done（ 1）表示對(duì)已經(jīng)發(fā)生的事情的不太肯定的推測(cè)，意為“可能已經(jīng)，或許已經(jīng)”。（ 2）虛擬用法表示本可以做，但卻沒(méi)做（表示很委屈地責(zé)備）If we had taken the other road , we might

11、have arrived earlier.如果我們選擇另一條路，我們可能會(huì)到得早一些。He might have given you more help, he was very busy.他本來(lái)是可以給你更多幫助的，盡管他很忙。4. needn ' t have don際上做了本來(lái)不必要做的事，意為茶來(lái)不必”。例如：There was plenty of time . She needn t have hurried.時(shí)間很充裕，她本不必匆忙。You needn t have told him the news.他本來(lái)不必把這個(gè)消息告訴他。5. should （ ought to ） have done 指本該做而實(shí)際未做的事，意為“本來(lái)應(yīng)該 ”。其否定式shouldn t（ oughtn ） t have done 則表示某種行為不該發(fā)生但卻發(fā)生了。例如：You should have started earlier , but you di dn t.你本應(yīng)該早一點(diǎn)出發(fā)，但是你沒(méi)有。You ought to have helped him （but you didn ）'. t你本應(yīng)該幫助他。We