1、1 误：He was here just now, so he mustnt be at home.正：He was here just now, so he cant be at home.析：表示“不可能”时应用cant，而不用mustnt。2 误：Will your parents go to visit thatmountain village?They cant, but Im not so sure.正：Will your parents go to visit that mountain village?They may not, but Im not so sure.析：此处表
2、示“可能不”，不表示“不可能”，因此cant应改为may not。3. 误：Might I use your dictionary to look up a word in?Of course, you might.正：Might I use your dictionary to look up a word in?Of course, you may.析：might用于一般疑问句，强调语气委婉时应用may做回答。4 误：Could I trouble you to answer me a question?Yes, you could.正：Could I trouble you to ans
3、wer me a question?Yes, you can.析：could用于一般疑问句，强调语气委婉时应用can做回答。5 误：May our teacher still be in his office correcting our papers?No, he cant.正：Can our teacher still be in his office correcting our papers?No, he cant.析：may表示推测时不可用于否定句和疑问句，而只能用于肯定句，因此May应改为Can。6 误：Must she be doing her homework in the c
4、lassroom?No, she cant.正：Can she be doing her homework in the classroom?No, she cant.析：must表示推测时不可用于否定句和疑问句中，而只能用于肯定句，因此Must应改为Can。7 误： Sometimes girls must be careless when they do their homework.正： Sometimes girls can be careless when they do their homework.析：此处表示“有时会”，应用can。8 误：She must have found
5、 her lost pen yesterday, mustnt she?正：She must have found her lost pen yesterday, didnt she?析：may, must, can表示推测时，反意疑问句动词不可再用may, must, can，而应和其后的实义动词保持一致。若用于“may / must / cant + have done +过去时间状语”句型，反意疑问句应用一般过去时。9 误：The man may be our new headmaster, wasnt he?正：The man may be our new headmaster, isnt he?析：may / must / cant + 动词原形表示对现在情况推测时，反意疑问句应用一般现在时。10 误：May I leave this with you?Yes, you might.正：May I leave this with you?Yes, you may.析：含may的疑问句的肯定回答应用may。
