谁能告诉我need、may、must的区别?那个.我对以need、may、must开头的一般疑问句的回答不太明白.比如May I go now这个疑问句,它的否定回答应该是怎样?
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![谁能告诉我need、may、must的区别?那个.我对以need、may、must开头的一般疑问句的回答不太明白.比如May I go now这个疑问句,它的否定回答应该是怎样?](/uploads/image/z/7513215-15-5.jpg?t=%E8%B0%81%E8%83%BD%E5%91%8A%E8%AF%89%E6%88%91need%E3%80%81may%E3%80%81must%E7%9A%84%E5%8C%BA%E5%88%AB%3F%E9%82%A3%E4%B8%AA.%E6%88%91%E5%AF%B9%E4%BB%A5need%E3%80%81may%E3%80%81must%E5%BC%80%E5%A4%B4%E7%9A%84%E4%B8%80%E8%88%AC%E7%96%91%E9%97%AE%E5%8F%A5%E7%9A%84%E5%9B%9E%E7%AD%94%E4%B8%8D%E5%A4%AA%E6%98%8E%E7%99%BD.%E6%AF%94%E5%A6%82May+I+go+now%E8%BF%99%E4%B8%AA%E7%96%91%E9%97%AE%E5%8F%A5%2C%E5%AE%83%E7%9A%84%E5%90%A6%E5%AE%9A%E5%9B%9E%E7%AD%94%E5%BA%94%E8%AF%A5%E6%98%AF%E6%80%8E%E6%A0%B7%3F)
谁能告诉我need、may、must的区别?那个.我对以need、may、must开头的一般疑问句的回答不太明白.比如May I go now这个疑问句,它的否定回答应该是怎样?
谁能告诉我need、may、must的区别?
那个.我对以need、may、must开头的一般疑问句的回答不太明白.比如May I go now这个疑问句,它的否定回答应该是怎样?
谁能告诉我need、may、must的区别?那个.我对以need、may、must开头的一般疑问句的回答不太明白.比如May I go now这个疑问句,它的否定回答应该是怎样?
may I do...?
Yes, you may.
No, you can't/ mustn't.
Can I do sth?
Yes, you can.
No, you can't.
Must I do sth?
Yes ,you must.
No, you needn't./ No, you don't have to .
Need I do sth?
Yes , you must.
No, you needn't.
1、在回答must开头的一般疑问句时,肯定回答用must,否定回答用needn't或don't have to. 如:
1)—Must I finish my homework before eight o'clock?
—Yes, you must.
2)—Must I attend the meeting?
—No, you needn't(No, you don't have to). You can ask Tom to go instead.
2、在回答may开头的一般疑问句时,肯定回答用may,否定回答用mustn't. 如:
1)—May I watch TV after supper?
—Yes, you may. / No, you mustn't.
2)—May I stop here?
—No, you mustn't.
3、在回答need开头的一般疑问句时,肯定回答用must,否定回答用needn't. 如:
1)—Need we stay behind after school?
—Yes, you must.
2)—Need he go now?
—No, he needn't.
must的反意疑问句
如果陈述部分含有表推测的情态动词must,其反问部分不能用情态动词,
应根据具体情况而定.
A.must表示“应该”,其疑问部分用mustn't(不应该),如:
You must work hard next term, mustn't you ?
下学期你应该努力学习,对吗?
B.must表示“必须”,其疑问部分用needn't(不必),如:
We must go at once, needn't we?
我们必须立刻走,是吗?
C.must表示推测,其疑问部分必须与must 后面的主要动词相呼应.如:
1)对现在动作或存在的情况的推测:
You must know the answer to the exercise, don't you?
你一定知道这项练习的答案,是不是?
That must be your bed, isn't it? 那一定是你的床,是吗?
2)对过去发生的动作或存在的情况的推测:
①表示肯定
You must have left your bag in the theatre, haven't you?
你一定是把包落在剧场了,是不是?
Aunt Liu must have got to the U.S.A. yesterday, didn't she?
刘大婶昨天准是到了美国了,对不?
②表示否定
表示推测时,否定式通常不是must not,而是can't (cannot).如:
He can't have been to your home; he doesn't know your address, does he?
他不可能去过你家;他不知道你的地址,是不是?
D.陈述部分含情态动词mustn't,表示禁止时,附加疑问部分就可以用must或may,如:
We mustn't be late, must we?(may we?)
我们不可以迟到,是吗?
need
带情态动词need的反意疑问句,疑问部分常用 need +主语.
We need not do it again, need we ?
当 need 为实义动词时,疑问部分用助动词do + 主语.
She doesn't need to go home alone, does she?