情態(tài)動(dòng)詞can_的用法小結(jié)[1]

1、【精品文檔】如有侵權(quán)，請(qǐng)聯(lián)系網(wǎng)站刪除，僅供學(xué)習(xí)與交流情態(tài)動(dòng)詞can_的用法小結(jié)1.精品文檔.情態(tài)動(dòng)詞can 的用法小結(jié)情態(tài)動(dòng)詞是高考的考點(diǎn)，對(duì)中學(xué)生來(lái)說(shuō)也是個(gè)難點(diǎn)，而can的用法較其他情態(tài)動(dòng)詞多，現(xiàn)根據(jù)中學(xué)課本和近幾年的高考試題，將其重點(diǎn)內(nèi)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(shí)態(tài)?！霸O(shè)法做成某事” 相當(dāng)于 managed to do sth. / succeeded in doing sth.。 2. can / could 只能表示現(xiàn)在或過(guò)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(jīng)過(guò)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(wèn)句. 2在以could, might 表示征詢對(duì)方意見(jiàn)或表示請(qǐng)求時(shí)，回答應(yīng)相應(yīng)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(qǐng)求用could，所以回答時(shí)相應(yīng)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(qǐng)求用might，所以回答時(shí)相應(yīng)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(qǐng)求用could，回答時(shí)相應(yīng)用can, 但選項(xiàng)中沒(méi)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(yīng)當(dāng), 很可能2.must：表示肯定

5、的猜測(cè)3.may /might：表示可能的猜測(cè)4.can/could：表示否定或疑問(wèn)的猜測(cè)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(jù)情景，應(yīng)表示可能的猜測(cè)，選might可能會(huì)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(jù)he isn

6、t very sure，表示可能的猜測(cè)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(jù)for he is much too short，可以判斷是表示否定的猜測(cè)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(wèn)和否定的猜測(cè)，第二句表示肯定的猜測(cè)。四. can /could have done1 過(guò)去有能力做到而實(shí)際上沒(méi)有做到的事情.含有責(zé)備或勸告之意。2 用于否定句,對(duì)過(guò)去發(fā)生事情的否定猜測(cè).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(jù)上下文，已經(jīng)有5個(gè)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(cè)。而第一句的時(shí)態(tài)用過(guò)去時(shí)，所以是對(duì)過(guò)去發(fā)生事情的否定猜測(cè).2） You made a lot of mistakes in your composition yesterday. You _ it much bet