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肯定程度遞增。 錯(cuò)因二 否定形式混淆 例 The man in the office___be Mr. Black because he went home just now. ’t not ’t ’t 【分析】 由下文 he went home just now 可知,作者判斷辦公室里那個(gè)人(不可能是Mr. Black 。 mustn’t 意為“千萬別”, may not 意為 “可能不”, needn’t意為“不必”?! ?can’t 意為不可能, 故選C?! ?答案 C 【錯(cuò)因透視】 情態(tài)動(dòng)詞的否定式含義不同,要牢記每個(gè)否定式的不同含義?! ?錯(cuò)因三 相似詞語混淆 例Can you go surfing with us this afternoon? I’d like to , but I __ look after my sister at home , because my mother is ill. to 【分析】 由題干my mother is ill 為客觀要求可知, 選C. 答案 C [錯(cuò)因透視] 相似詞組must 表示主觀愿望,have to 則為客觀要求。 學(xué)生由于不清楚這一點(diǎn)而誤選B項(xiàng)?! ″e(cuò)因四 疑問答語 易錯(cuò)解 例 May I take this book out of the reading room? ______. Please read it here. A. Certainly , you needn’t , you mustn’t , you may not 【分析】 May I …? 的否定答語為 No, you can’t/ mustn’t. 。 Must I …?否定答語為 No,you needn’t/don’t have to.。 Can I …? 的否定答語為 No, you can’t. 在口語交際中, 要體會(huì)句子中的情感差別。 【答案】 C 【錯(cuò)因透視】學(xué)生由于看到問句中用的情態(tài)動(dòng)詞may 而誤選D項(xiàng)。應(yīng)該注意在有問話與答語的上下文中,下文不一定要填上文出現(xiàn)的情態(tài)動(dòng)詞,而要注意情感的細(xì)微變化?! 』顚W(xué)巧練 _____ you help me answer the telephone? OK. A. Can B. May C. Need D. Must Tom is young but he ____ fly a kite by himself. A. can B. may C. need D. must ——Listen! Is that Kate playing the piano in the room? No. It_____ be Kate. She has gone to London. A. may not B. needn’t C. mustn’t D. can’t 用can ,could 填空 ____ he swim ? Yes, he ____. But he ______ swim two months ago. Tom said he ___ help me with my English. ____ you tell me the way to the museum? Certainly. Could I cross the street here? Of course you _____. able to Mum , _____ I play puter games? Yes, you can, but you have to finish your home work first. A. would She ____ know the answer, but I’m not sure. be Tom, don’t drive too fast, you ____ hit the others’ cars. OK. A. must to Cars and buses ____ stop when the traffic lights turn red. A. can _______ we attend the party? No, you needn’t. You are free. A. Must B. Can Must I hand in all my money , Mum? No, you ___ . You can use it to buy some school things. A. mustn’t B. can’t ’t You __ be tired after walking such a long way. Do sit down and have a rest. A. can You ___ to the meeting this afternoon if you have something important to do. A. needn’t to e ’t need e C. don’t need ing E. needn’t e Let’s go to Taishan Park by taxi. It’s not far. We ___take a taxi. ’t ’t ’t ’t How ___ you talk to me like that? A. dare B. dared C. daring She said it as loudly as she ____. A. dare to 用dare 的適當(dāng)形式填空 You told him? How did you ____? I hardly ___ to hope she’d remember me. I ___ say you know it already. They ___ not ask for any more money.