【正文】 (說話人認(rèn)為必須現(xiàn)在干)I have to go 。值得注意的是：（1）must + have + 過去分詞，表示現(xiàn)在對過去事物的推測。 “必須；應(yīng)該；一定；準(zhǔn)是”，表示說話人認(rèn)為有必要做某事，命令、要求別人做某事以及對事物的推測。(might)“可以”，表示說話人同意，許可或請求對方許可。t carry the heavy 。May I have your name? 我能知道你的名字嗎？Shall we begin now? 我們現(xiàn)在就開始嗎？You must obey the school 。例如：You must be tired after working so ，肯定累了吧。5）will用于表示決心（可譯成“一定要,決心，等”）We will never talk about that subject 。They had to obey whether they would or 。）will , would（would可以看作是will的過去式，這兩個(gè)詞除了時(shí)態(tài)不相同外，在表達(dá)意思的許多方面是相近的。If it had not been for the doctor39。The effect of the tax should be felt in higher 。主要用于下面幾個(gè)方面。You shall do as you are 。” I don39。It’s amazing that she should be the only student who has won the ，真是神了。t后接完成式可以表示過去做了一件本來不必要做的事情shall的基本用法(1)shall用作情態(tài)動(dòng)詞時(shí)，用于第二、三人稱，表示說活人的意愿，可表示“命令”、“警告”、“強(qiáng)制”、“威脅”或“允諾”等意，如：He shall go first, whether he wants to or not.(2)在疑問句中，shall用于第一、三人稱，表示說話人的征詢對方意見或請求指示，Shall用于第一人稱和第三人稱的疑問句中是向聽話人征求意見或命令。t(or , you don39。如果使用might，語氣就比較婉轉(zhuǎn)或更加不肯定，如：Mary might have learned some Chinese before.②可以表示過去本來可以做到而實(shí)際沒有做到的事情，有“勸告”或“責(zé)備”的語氣，如：You didn39。t)have to(不必)來回答，而不用mustn39。如： May you have a good 。將情態(tài)動(dòng)詞置于主語之前即構(gòu)成其疑問式，在情態(tài)動(dòng)詞之后加not既構(gòu)成其否定式。t give you any definite answer at this 。He couldn39。Now people can skate on the 。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 able to explain what had ，他還是將事情的經(jīng)過解釋清楚了（而不是“他有能力解釋清楚”）。例如：He can speak five 。3）情態(tài)動(dòng)詞在句中不受任何人稱,性,數(shù)變化的影響。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。對比：It’s very cold could /may / might be as low as minus 15 。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。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。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”。t, couldn39。3）情態(tài)動(dòng)詞+動(dòng)詞完成時(shí)。clock, he can39。He must stay 。例如： You needn’t have wakened me up。如：Since the ditch is full of water, it must have rained last ，想必昨晚一定下雨了。這是情態(tài)動(dòng)詞的一種虛擬語氣用法。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。t have attended39。39。t 39。ve only been working for an 39。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．canB．shouldC．mayD．mustHe hesitated for a moment before kicking the ball, otherwise he ________ a ．had scoredB．scoredC．would scoreD．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。 won39。s nearly seven o39。39。第一篇：高中英語情態(tài)動(dòng)詞語法題高中英語情態(tài)動(dòng)詞練習(xí)題第一組題 was really anxious about home without a ’t ’t have ’t have ’t leave John ing by train?He should, but he ________ likes driving his leftluggage office is a place where bags _______ be left for a short time, especially at a railway ’t that Ann’s husband over there?No, it _______ be himI’m sure he doesn’t wear ’ ’ not ________ be tiredyou’ve only been working for an ’tC can’ not6, I 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 have had be arriving graduated from college at a very young , he ________ have been a very smart boy is the girl standing over there?Well, if you ________ know, her name is under 12 years of age in that country ________ be under adult supervision when in a public 11.“The interest ________ be divided into five parts, according to the agreement made by both sides,” declared the shall don’t mind telling you what I ’m not asking you for ’ ’tD needn’t _______ pay Tracy a visit, but I’m not sure whether I will have time this ’ll tell Mary about her new job _________ her last to have have told this the right way to the Summer Palace?Sorry, I am not it _______ me, but I want to use your puter to type a _________ have my puter if you don’t take care of shan’ ’’t, I’ve been studying English since 8 o’ I go out and play with Tom for a while?No, I am afraid , it’s raining outside Can’’ ’t, you _______ leave all your clothes on the floor like this!’tB mustn’’ not, look at the you play the piano at such a late hour?A ________ have been more than six years old when the accident ’tB couldn’’’t第二組題 ________ have pleted his work。t39。 be here at any 8..When he was there, he______ go to that coffee shop at the corner after workevery 9..Sir, you _____ be sitting in this waiting is for women and children 39。t I39。t 39。 39。t be39。t fire spread through the hotel very quickly but everyone ______ get able to can I e for the photos? I need them tomorrow _____be ready by 12:12..I stayed at a hotel while in New , did you? You_ ____with have stay have stayed13.－Will you stay for lunch?－Sorry,＿＿＿＿＿ ,My brother is ing to see mustn39。t have 39。t mind telling you what I 39。表示說話人所講的與所發(fā)生的事實(shí)相反。You couldn’t have met my died before you were ，因?yàn)樗缭谀愠錾熬退懒恕 don’t have to go to work ，因?yàn)槲医裉觳簧习唷?)must 表示對已發(fā)生的事情的推測時(shí)，must 要接完成式。t be home ，他此時(shí)一定還未到家。表示對過去情況的推測。t表示。是哪種時(shí)間取決于情態(tài)助動(dòng)詞后面的主動(dòng)詞形式，分別表述于下：1)情態(tài)助動(dòng)詞+do：對現(xiàn)在的一般情況或?qū)磉M(jìn)行推測That man smiled at may know you.(= Maybe he knows you.)那個(gè)男的朝你笑了?？赡芪覀兠魈煸绯啃褋淼臅r(shí)候會(huì)在飛越太平洋。他們肯定一直在吵架來著?，F(xiàn)在的氣溫可能低達(dá)零下15度。）ought to 在語氣上比should 要強(qiáng)。