2020天津公安消防考军校考试-特殊句型（四）

16.陈述部分为There (Here) + be + 主语时，问句部分用be+there(here)?形式。如：

①There are two cakes on the plate, aren’t there?

Here is a story about Mark Twain, isn’t here?

17.陈述部分用had better +原形动词表示建议时，问句部分用hadn’t +主语?形式。

①You’d better tell him about the matter, hadn’t you?②We had better do it by ourselves, hadn’t we?

18.陈述部分用used to +主语时，问句部分用didn’t + 主语?或usedn’t +主语?形式。

①He used to live in the country, didn’t he?/usedn’t he?

②They used to be good friends, didn’t they?/usedn’t they?

19.陈述部分用must(may, might) + have + V-ed表示推测时，若句中带有明显的过去时间的状语，问句部分动词用过去时形式。如：

①He might have forgotten his pen in the classroom yesterday, didn’t he? (不用mightn’t he?/ hasn’t he?)

②You must have got up late this morning, didn’t you?(不用mustn’t you?/haven’t you?)

20.陈述部分用must(may, might) + have + V-ed表示推测时，若句中没有带明显的过去时间的状语，问句部分动词用现在完成时形式。如：

①Everyone must have known the death of the waitress, haven’t they? (不用mustn’t they?)

②You must have worked there a year ago, didn’t you?(不用mustn’t you?/ haven’t you?)