情態(tài)動詞can_的用法小結[1]

1、【精品文檔】如有侵權，請聯系網站刪除，僅供學習與交流情態(tài)動詞can_的用法小結1.精品文檔.情態(tài)動詞can 的用法小結情態(tài)動詞是高考的考點，對中學生來說也是個難點，而can的用法較其他情態(tài)動詞多，現根據中學課本和近幾年的高考試題，將其重點內容列出。一表示能力1Can you type?2I can do it.can 與be able to 的區(qū)別 1. be able to 能用于各種時態(tài)。“設法做成某事” 相當于 managed to do sth. / succeeded in doing sth.。 2. can / could 只能表示現在或過去的能力。 例： 1） A comput

2、er _ think for itself; it must be told what to do. A. cant B. couldnt C. may not D. might not析：答案是A，表示能力.2）. The fire spread through the hotel very quickly , but everyone _ get out. A. had to B. would C. could D. was able to析：答案是D。表示經過努力才成功地逃出大火。二can/could 表示許可/允諾1Can/could Tom use the car?Yes , he

3、can.與may /might 的區(qū)別1might, could 比較委婉, 一般多用于疑問句. 2在以could, might 表示征詢對方意見或表示請求時，回答應相應使用can, may.例：1）. Could I borrow your dictionary? Yes, of course you _. A. might B. will C. can D. should析：答案是C。第一句的請求用could，所以回答時相應用can2.） Might I watch TV after supper? Yes, you _. A. may B. must C. might D. can析：答

4、案是A。第一句的請求用might，所以回答時相應用may.3）.-Could I call you by your first name? -Yes, you _.A. will B. could C. may D. might析：答案是C。第一句的請求用could，回答時相應用can, 但選項中沒有can，所以最佳的是may.三can指可能性He cant be at home. He has gone to Beijing.與must may , might, could /Should, ought to的區(qū)別1.should, ought to:按理應當, 很可能2.must：表示肯定

5、的猜測3.may /might：表示可能的猜測4.can/could：表示否定或疑問的猜測例：1） -when can I come for the photo ? I need them tomorrow.- They _ be ready by 12:00A. can B .should C. might D. need析：答案是B。根據情景，應表示可能的猜測，選might可能會走掉顧客2）Peter _ come with us tonight, but he isnt very sure yet. A. must B. may C. can D. will析：答案是B。根據he isn

6、t very sure，表示可能的猜測3）.Michael _ be a policeman, for he is much too short.A. neednt B. cant C. should D. may析：答案是B. 根據for he is much too short，可以判斷是表示否定的猜測4）-_he be watching TV now?Yes, he _ be watching TV now.No, he _ be watching TV now.A.Must; can; mustntB. Can; must; cantC. Can; can; mustnt D. May

7、; must; neednt析：答案是B。第一句和第三句分別表示疑問和否定的猜測，第二句表示肯定的猜測。四. can /could have done1 過去有能力做到而實際上沒有做到的事情.含有責備或勸告之意。2 用于否定句,對過去發(fā)生事情的否定猜測.例：1）. -There were already five people in the car, but they managed to take me as well. -It _a comfortable journey A. cant be B. shouldnt be C. mustnt have been D. couldnt have been 析： 答案是D。根據上下文，已經有5個人在車上，但還是把我?guī)?，所以，這次路途不可能是舒服的，屬于否定的猜測。而第一句的時態(tài)用過去時，所以是對過去發(fā)生事情的否定猜測.2） You made a lot of mistakes in your composition yesterday. You _ it much bet