初中英語語法：情態(tài)動詞講解與練習有答案資料(編輯修改稿)
2024-07-20 06:47 本頁面
【文章內容簡介】 用時, 后面的to 時?？梢员皇÷??！ ?)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。 . a. Need you go yet? Yes, I must.\No, I needn39。t. 3) need 的被動含義：need, want, require, worth（形容詞）后面接doing也可以表示被動： need doing = need to be done 和ought to 都為“應該”的意思，可用于各種人稱。 Ought he to go? Yes. I think he ought to. 表示要求，命令時，語氣由 should（應該）、had better最好）、must（必須）漸強。 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。had better do sth .had better not do It is pretty cold. You39。d better put on my coat. She39。d better not play with the dog. had better have done sth表示與事實相反的結果，意為本來最好?！ 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)在或將來的情況的推測，此時動詞通常為系動詞。I don39。t know where she is, she may be in Wuhan. 2）情態(tài)動詞+動詞現(xiàn)在進行時?！ ”硎緦ΜF(xiàn)在或將來正在進行的情況進行推測。 At this moment, our teacher must be correcting our exam papers. 這時，我們老師想必在批改試卷 3）情態(tài)動詞+動詞完成時?！ ”硎緦^去情況的推測?！ e would have finished this work by the end of next 。The road is wet. It must have rained last ，昨天晚上一定下雨了?！ ?）情態(tài)動詞+動詞的現(xiàn)在完成進行時。 表示對過去正在發(fā)生事情的推測。 Your mother must have been looking for ?！ ?）推測的否定形式，疑問形式用can39。t, couldn39。t表示。 Mike 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?！ ∽⒁猓篶ould, might表示推測時不表示時態(tài)，其推測的程度不如can, may?！ ? have +過去分詞 1) may(might) have + done sth, can (could) have + done sth表示過去，推測過去時間里可能發(fā)生的事情?！ hilip may (might) have been hurt seriously in the car can (could) have been hurt seriously in the car accident. 2) must have +done sth，對過去時間里可能發(fā)生的事情的推測，語氣較強，具有肯定，諒必的意思。 Linda 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。否定句表示不該做某事而做了。You ought to (should) have been more careful in this experiment. He ought not to have thrown the old clothes away.（事實上已扔了。） ought to 在語氣上比should 要強?！ ?) needn39。t have done sth 本沒必要做某事 I dressed very warmly for the trip, but I needn39。t have done so. The weather was hot. 5) 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 then. 的情態(tài)動詞 帶to 的情態(tài)動詞有四個：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to為六個,它們的疑問，否定形式應予以注意： Do they have to pay their bill before the end of the month? She didn‘t use to play tennis before she was fourteen. You ought n
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