【正文】 it have written it out have written it out to write it out5.—Shall I tell John about it?—No, you 39。39。39。t 39。t have 39。s nearly seven o39。t 39。39。t can39。t won39。m ______ have turned off the alarm clock and gone back to sleep should have been there, but I _______ not find the sister met him at the Grand Theatre yesterday afternoon, so he ___ your 39。t have attended39。t have attended you ing to Jeff39。m not ________go to the concert ．mustB．wouldC．shouldD．might is on time for _________ it be that he was late for the opening ceremony?A．can B．shouldC．mayD．mustHe hesitated for a moment before kicking the ball, otherwise he ________ a ．had scored B．scoredC．would score D．would have scored20.—Write to me when you get home.—_________A．I mustB．I shouldC．I willD．I can was really anxious about _____ home without a 39。t have left39。t leave, I’m not feeling well in the stomach, I______so much fried chicken just ’t ’t have eaten’t have ’t eat heard they went skiing in the mountains last _____ be true because there was little snow may not be B won’t be C couldn’t be D mustn’t be has been announced that candidates_____ remain in their seats until all the papers havebeen can B will C may D shall leftluggage office is a place where bags ______ be lefe for a short time, especially ina railway don39。m not asking you for 39?！痶 often see lights in that empty you think I _____ report it to the police? _____ at 8:30 for the meeting, but he didn’t’ show have arrive be arriving have had arrived ______ be tiredyou39。 39。這是情態(tài)動(dòng)詞的一種虛擬語氣用法。表達(dá)了說話人的埋怨，后悔的語氣。根據(jù)要表達(dá)的意思，有如下結(jié)構(gòu)：should have done / ought to have done：本應(yīng)該…… shouldn’t have done / oughtn’t to have done：本不該…… could have done：本來可以…… needn’t have done：本來沒必要…… would like to have done：本來很想…… would rather not have done: 本來不愿意…… could / might / have done: 不然早就情態(tài)動(dòng)詞講解與訓(xùn)練高考重點(diǎn)要求：1．掌握情態(tài)動(dòng)詞的基本含義和用法，并能根據(jù)語境準(zhǔn)確使用表達(dá)情感的情態(tài)動(dòng)詞。3．掌握情態(tài)動(dòng)詞后接不定式完成體的不同意義。如：Since the ditch is full of water, it must have rained last ，想必昨晚一定下雨了。I can’t find my may / might have left them at the school ，也許昨天丟到學(xué)校了吧。例如：You ought not to make fun of is not the one you laugh at but learn 。You should have finished your positon by 。例如： You needn’t have wakened me up。注：表示推測過去某動(dòng)作發(fā)生的可能性時(shí)，就表示的可能性程度而言，must最大，could其次，may更次之，might最小。2)must表對現(xiàn)在的狀態(tài)或現(xiàn)在正發(fā)生的事情的推測時(shí)，must 后面通常接系動(dòng)詞be 的原形或行為動(dòng)詞的進(jìn)行式。（對現(xiàn)在情況的推測判斷）He must be working in his 。He must stay 。I didn39。否定推測用can39。If Tom didn39。clock, he can39。表示推測的用法對不同時(shí)間段發(fā)生的事情的推測對現(xiàn)在（一般現(xiàn)在）的推測情態(tài)動(dòng)詞＋V原 對過去的推測情態(tài)動(dòng)詞＋have + 對現(xiàn)在進(jìn)行的動(dòng)作的推測情態(tài)動(dòng)詞＋be + Vingcan, could, may, might, must 皆可表示推測，其用法如下：1）情態(tài)動(dòng)詞+動(dòng)詞原形。I don39。表示對現(xiàn)在或?qū)碚谶M(jìn)行的情況進(jìn)行推測。3）情態(tài)動(dòng)詞+動(dòng)詞完成時(shí)。We would have finished this work by the end of next 。4）情態(tài)動(dòng)詞+動(dòng)詞的現(xiàn)在完成進(jìn)行時(shí)。Your mother must have been looking for 。t, couldn39。Mike can39。注意：could, might表示推測時(shí)不表示時(shí)態(tài)，其推測的程度不如can, may。其中might, may, could表示“可能”，should, ought to表示“料想/按常理說應(yīng)該”，will, must表示“肯定，一定”（must的推測把握最大，它表示沒有其它的可能性了，肯定是某種情況；而will是一種主觀感覺，并沒有排除所有其它可能性）。其中might not / may not意思是 “可能不”，should not / ought not to意思是“料想/按常理不會(huì) ”，won’t意思是“肯定不”，“ couldn’t / can’t”表示“不可能”。他可能認(rèn)識(shí)你。2)情態(tài)助動(dòng)詞+ be doing： 對說話時(shí)的行為進(jìn)行推測(但will be doing還可以表示對將來某個(gè)時(shí)候正發(fā)生的行為進(jìn)行推測)It’s already midnight and all lights are off students must be sleeping.(= There can’t be another possibility.)已經(jīng)半夜了，所有的燈也都熄了。It’s already students will be sleeping now.(對說話時(shí)的行為推測)(= I’m quite sure the students are sleeping now.)已經(jīng)半夜了。Our airplane flies very we will be flying over the Pacific when we wake up tomorrow morning.(對將來某個(gè)時(shí)候正發(fā)生的行為進(jìn)行推測)我們的飛機(jī)飛得很快。3)情態(tài)助動(dòng)詞+ have done：對發(fā)生過的動(dòng)作行為進(jìn)行推測We can’t find Tom might / may / could have left town.(= Maybe he has left town.)我們到處都找不到Tom。The girl in red must have been said she would wear a red blouse and no other girls were in red then.(= There can’t be another possibility.)那個(gè)穿紅衣的女子一定是Lucy。4)情態(tài)助動(dòng)詞+have been doing: 對過去某時(shí)候正在發(fā)生的行為進(jìn)行推測(也可以表示一直持續(xù)到現(xiàn)在的行為)I heard a lot of people may have been having a party.(=Maybe they were having a party.)我當(dāng)時(shí)聽到很多人唱歌。The girl doesn’t want to talk to his must have been quarreling.(= I’m sure they have been quarreling.)這個(gè)女孩不想和她男朋友說話?！⒁猓?)mustn’t不能表示推測，而表示禁止；表示不可能是couldn’t / can’t；can只能在否定句（即“不可能”）和疑問句中（＂可能．．．．．．嗎＂）表示推測?！敝荒苷f“She could / may / might be Lucy.” Can可以用在否定句中和疑問句中表示對事實(shí)推測，can’t表示不可能，和couldn’t 同義，如前所述；用在一般疑問句中，如Can that be Tom?表示“可能......嗎？”用在特殊疑問句中，如What can it be?” 表示“可能是什么/為什么/在哪兒............呢？”3)但是can可以用在肯定句中，表示理論可能上的或泛泛而談的可能性，可翻譯為“(有時(shí))可能”，它不是表示對具體事實(shí)的推測。The road is always can be blocked at any 。對比：It’s very cold could /may / might be as low as minus 15 。（對事實(shí)推測）The traffic ahead is not road could / may / might be blocked 。(對事實(shí)推測)情態(tài)動(dòng)詞+ have +過去分詞1)may(might)have + done sth, can(could)have + done sth 表示過去，推測過去時(shí)間里可能發(fā)生的事情。Linda has gone to work, but her bicycle is still must have gone by )ought to have done sth, should have done sth本應(yīng)該做某事，而事實(shí)上并沒有做。You ought to(should)have been more careful in this ought not to have thrown the old clothes away.（事實(shí)上已扔了。4)needn39。t have done weather was )would like to have done sth本打算做某事I would like to have read the article, but I was very busy They must be in the library, aren’t they? 他們一定還在圖書館，對吧？They must have gone to the library, haven’t they? 他們一定去圖書館了，對吧？ They must have been to the library yesterday, didn’t they? 他們昨天一定去了圖書館，是不是？ Let me do it, will you? 讓我來做，好么？ Let me help you, may I? 請讓我?guī)湍?，可以嗎?Don’t move, will you? 請你別動(dòng)！Go quickly, can you? 你能不能快點(diǎn)？Let’s go for a walk, shall we? 咱們?nèi)ド⒉剑妹?？He used to live in the countryside, didn’t/usedn’t he? 他過去住在農(nóng)村，對吧？情態(tài)動(dòng)詞，在英文中主要用來表示說話人的看法、態(tài)度等。從用法上來說，它有這樣幾個(gè)特點(diǎn)：1）各個(gè)情態(tài)動(dòng)詞自身都有一定的詞義。3）情態(tài)動(dòng)詞在句中不受任何人稱,性,數(shù)變化的影響。英文中的情態(tài)動(dòng)詞主要有：can , could。must。need。例如：He can speak five 。We should study hard for our 。t be in such a hurry for there is enough timefor ，用不著這么慌張。當(dāng)然could也有自己獨(dú)特的用法。但是were / was able to的肯定形式也可以表示過去實(shí)現(xiàn)了的具體能力（即表示過去某個(gè)時(shí)候某人成功地做成某事），此時(shí)不能用could替代He was able to flee Europe before the war broke out.= He managed to flee Europe before the war broke out Although the pilot was badly hurt, he was