初中英語語法：情態(tài)動詞講解與練習有答案資料-預(yù)覽頁
【正文】 I have to go now. 我得走了?！ eed 是一個情態(tài)動詞，他的用法完全和其他情態(tài)動詞一樣，但 need 還可當作實義動詞使用，這時 need 就象其他動詞一樣，有第三人稱，單復(fù)數(shù)， 后面加帶 to 的動詞等特性?！ ou needn39。 Dare you catch the little snake? 你敢抓小蛇嗎? dare 除用作情態(tài)動詞外，更多的是當實義動詞使用， 用法同實義動詞一樣，要考慮人稱，單復(fù)數(shù)，時態(tài)等?！ ou ought to read these books if you want to know how to repair the motorcar. 如果你想知道如何修理汽車,你應(yīng)該讀這些書?！ ou ought to have been here yesterday. 你昨天就應(yīng)該來?！ ?. will (would) 表決心、愿望?！ ? a. Surely we will support all the people in the world in their struggle for peace. b. He would not let me try it . 3）表示對對方的請求，用于第二人稱作主語的疑問句中，would的語氣比will委碗,疑問句中一般用some, 而不是any。必須39?！ ? a. He had to look after his sister yesterday. 3） 在否定結(jié)構(gòu)中： don’t have to 表示“不必” mustn’t 表示 “禁止” . a. You don‘t have to tell him about it. b. You mustn‘t tell him about it. amp?！ ?)實義動詞:need+ n. / to do sth 2)情態(tài)動詞： need，只用原形need后加do，否定形式為need not?！ ?better表示最好 had better 相當于一個助動詞，它只有一種形式，它后面要跟動詞原形?！ ou had better have e earlier. 問句 肯定回答 否定回答 Need you…?Yes, I must. No,I needn‘t Must you…?Yes, I must. No, I needn’t. /don’t have to. May I …? Yes, of course. No, you mustn’t. Could you…? Yes, you can. No, you can’ Yes,you could. No,you couldn’t. must 用于肯定句 can 用于否定句或疑問句 May 用于肯定句或否定句 should 用于肯定句 can, could, may, might, must 皆可表示推測，其用法如下： 1）情態(tài)動詞+動詞原形?！ ”硎緦ΜF(xiàn)在或?qū)碚谶M行的情況進行推測。The road is wet. It must have rained last ，昨天晚上一定下雨了。 5）推測的否定形式，疑問形式用can39。t have found his car, for he came to work by bus this morning. 邁克一定還沒有找回他的車，因為早上他是坐公共汽車來上班的?！ inda has gone to work, but her bicycle is still here. She must have gone by bus. 3) ought to have done sth, should have done ，而事實上并沒有做?！ ?) needn39。 B. Cans dangerous. A. needn39。 water. B. is going tot B. mustn39。t B. can39。t C. needn39。根據(jù)句意應(yīng)選D。你不必做某事了。t表示“ 禁止、不能”。9．答案B 解析：依據(jù)題意：在火車進站之前，你絕不能打開車門?？芍銢]必要。故選A。t. mustn39。我們打掃一下好嗎？用should來表示征求、詢問。t B. may not C. needn39。t B. can39。 may not C. may。t( ) 2 Shall I get one more cake for you, Dad?Thanks, but you___, I39。t work out this problem, so itt B. can C. mustn39。t have to D. don39。t D. may not4( ) 1 His arm is all right. He___ go and see the doctor.A. has not to B. don39。t C. does D. doesn39。t5( ) 1 He had better stay here, ___ he?A. didn39。t( ) 2 You39。d better ___ your hair ___ once a month.A. had。 cutted( ) 4 You___ ask that man over there. Maybe he knows the way. A. had better not to B. had not better C. had better D. had better not6( ) 1 Shall we go and visit the History Museum next Sunday?A. Here you are B. Sorry, I can39。t. You____read it only here.A. Must。 must參考答案：1. 15 A D A B B2. 15 C D B C A3. 13 C A A4. 13 D B C5. 14 C B C C6. 13 B A B16
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