英语have been doing反意疑问句You must have been playing tennis at the time,反意疑问句怎么问?句中有“have been doing"，和“at the tiem"，不是应该用weren't

英语have been doing反意疑问句You must have been playing tennis at the time,反意疑问句怎么问?句中有“have been doing"，和“at the tiem"，不是应该用weren't
英语have been doing反意疑问句
You must have been playing tennis at the time,
反意疑问句怎么问?
句中有“have been doing"，和“at the tiem"，不是应该用weren't

英语have been doing反意疑问句You must have been playing tennis at the time,反意疑问句怎么问?句中有“have been doing"，和“at the tiem"，不是应该用weren't
做反义疑问句的时候 首先要搞清楚助动词是哪一个
You must have been playing tennis at the time, _? 这句话中have做助动词 引导现在完成进行时 故应该是
You must have been playing tennis at the time , haven't you ?
She must have a kind mother,_?这句话中must表示推测,而不是表“必须”,反意疑问句应该提取后面的助动词 have做的是实意动词 表示“有”的意思 其助动词应该是do
因为是第三人称单数 所以应该是She must have a kind mother,doesn't she?

You must have been playing tennis at the time , haven't you ?
She must have a kind mother,doesn't she?
must表猜测时，反意疑问句提取后面的助动词，第一句是用have，第二句是用does

You must have been playing tennis at the time , haven't you ?
must表猜测时1）对现在情况的推测，问句部分用主动词（do,be)一般现在时的适当形式。若是现在进行时，问句部分用现在进行时的适当形式表示。若是there be结构，问句用isn't/aren't there。如：1)He must be there, isn't...

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You must have been playing tennis at the time , haven't you ?
must表猜测时1）对现在情况的推测，问句部分用主动词（do,be)一般现在时的适当形式。若是现在进行时，问句部分用现在进行时的适当形式表示。若是there be结构，问句用isn't/aren't there。如：1)He must be there, isn't he? 2)He must have a big family, doesn't he?
3)He must be waiting outside, isn't he?
4)There must be some students in the room, aren't there?
2）对已发生的过去情况的推测，若陈述句谓语部分有“must have done”，而且有表示过去的时间状语，问句部分用didn‘t；若没有表示过去的时间状语，问句部分用haven’t或hasn‘t。如：1)They must have gone there last night,didn't they?
2)They must have arrived by now,haven't they?（根据by now判断）
3)They must have been to the Great Wall,haven't they?
She must have a kind mother,mustn't she?
当must表示“必须”时,反意疑问句要重复must。如: All the studeots must respeet thoir teae五ers,mustn’they?全体学生必须尊敬老师,是吗?

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1:haven't you.2:doesn't she?