含情态动词must的反义疑问句
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含情态动词must 的反义疑问句
陈述部分有must,且表示”必须”时,附加疑问句部分用must n't,如果表示"必要"则用needn't。
陈述部分中是mustn't 表示"禁止"时,附加疑问句部分用must。
陈述部分中的must 表示"一定"、"想必"等推测意义时,附加疑问句部分而是根据陈述部分的谓语动词或其助动词来定。
They must clean the floor, mustn't they/needn't they?
他们必须擦地板,是不是?
We must stay at home, mustn't we?
我们必须留在家里,是不是?
We mustn't be late, must/may we?
我们不许迟到,是不是?
They must work hard, must n't they ?(必须)
They must take medical less ons, n eed n't they?必要)
He must be lying to me, ___?
A. mustn't be
B. must be
C. isn't be
D. is be
"他肯定在对我说谎。"must be doing 是对正在进行的事情的推断。还有must have done 是对
过去情况的肯定推断。must这种用法的反意疑问句不用must提问。
推断用法:
He must be lying to me.
xx 用法:
He is lying to me.
xx 用法反意疑问句:
He is lying to me, isn't he? 推断用法反意疑问句:
He must be lying to me, isn't he? 推断用法:
He must have been abroad.
xx 用法:
He has been abroad.
xx 用法反意疑问句:
He has been abroad, hasn't he? 推断用法反意疑问句:
He must have been abroad, hasn't he? 推断用法:
He must have gone swimming yesterday.
xx 用法:
He went swimming yesterday.
xx 用法反意疑问句:
He went swimming yesterday, didn't he? 推断用法反意疑问句:
He must have gone swimming yesterday, didn't he?He must be a visitor, isn't he?(对现在情况的推测)
You must have see n him at his birthday party yesterday, did n't you?对过去情况的推测,且句中有过去的时间状语)
You must have seen him at his birthday party,haven't you?强调动作的完成)1 带have to时,附加疑问用do或have的相应形式,用do更常见。
You don ' t have to go to school on Sundays , do you ?
We have to work today , don 't we ? (haven ' t we ?)
2 带must 时
A表示必须”附加疑问部分用mustn 't
We must work hard , mustn ' t we ?
B表示有必要”时,附加疑问部分用needn ' t.
The teacher must show concern for each pupil , needn ' t he ?
C表示推测”时,附加疑问部分要与陈述部分的谓语动词相呼应。
He must be a teacher, isn ' t he ?
Dmust + have + do ne是对过去情况的推测,当陈述部分没有明确的表示过去的时间状语时,附加疑问要用have的相应形式;当陈述部分有明确的过去时间状语时,附加疑问要用过去时。You must have lived here for a long time , haven ' t you ?
You must have seen him yesterday , didn ' t you ?
E 当陈述部分是must not ,表示“一定不要”、“禁止”时,附加疑问除用must 外,还可以用may.
I must not tell him , must I ? ( may I ?)
3带used to时,附加疑问用usedn '或didn '但口语中倾向于后者。
Thereused to be an apple tree in the garden , didn 't there ? (usedn 带need 时,附加疑问用do 或need ,应该与陈述部分need 用法相呼应。
I needn 't tell you the answer , need I ?
You need to buy a better dictionary , don 't you ?
5 带ought to 时,附加疑问用ought. ,但在美国英语中用should
We ought to help each other , oughtn 't we ? / shouldn 't we ?