unit1-grammer肖云(存儲(chǔ)版)
【正文】 ____________________________________ eg. They can39。Modal Verbs 情態(tài)動(dòng)詞 情態(tài)動(dòng)詞用來表示說話人對(duì)一個(gè)動(dòng)作或狀態(tài) 的 看法 ， 態(tài)度 或者說話人的 情感 。t /couldn’t have gone out because the light is still on. Can (Could) he have heard the news? can /could have done 過去否定或疑問的猜測(cè) Given more time, I could have done it even better. I could have lent him money, but he didn’t ask me. could have done 表示虛擬語氣，用于肯定句。t you sit down? 請(qǐng)坐下，好嗎？ 疑問句中用于第二人稱，提出請(qǐng)求 3. _____________________________________ Fish will die out of water. When I was at school, I would ask such questions. 表示習(xí)慣和傾向性 “總是” 4. _________________________ Would you help us, please? 請(qǐng)您幫助我們，好嗎？ Yes , I will. 好的，我愿意。 should have done表示本該干卻沒干 shouldn’t have done表示本不該干某事而干了 。t. /don’t have to. I don’t like this TV set. We must buy a new one. There was no more bus. They had to walk home. 表示“必須”這個(gè)意思時(shí)， must 和 have to 稍有區(qū)別。 it ____ cleaned. A. can’t have been B. couldn’t be C. may have been D. would be A 4. How____ you say that you really understand the whole story if you have covered only part of the article? A. can B. must C. need D. may A 5. There ____ be any difficulty about passing the road test since you have practised a lot in the driving school. A. mustn’t B. shan’t C. shouldn’t D. needn’t C 6. Jane has just e back from China and she looks happy. She _________ her trip very much
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