Question

一个关于反义疑问句的问题， I don't think he could have done such a stupid thing last night _____?

A .do I? B could he ? C.did he? D.has he?
这样的I think /imgine /suppose 的类型是针对从句反问么？如果从句中含有could /should /might /would have done怎么选呢？

Answer 1

did he 当主句主语为第一人称时，要看从句。否定前移。所以这句的否定意义在后面的宾语从句中，从句为否定句，后用肯定。情态动词表推测时，不用情态动词来完成问句，有过去时间用过去时。所以这句要did he.

Answer 2

B. 这是否定前置。 原句应该是 I think he couldn't have done such a stupid thing last night .但是因为有有think 要否定前置，这时要反义疑问句的话应该是看后面的 是couldn't he 的反义 就是 could he ？

Answer 3

could he I think 插入语 和它没关系

Answer 4

选B. could he?
另例如：I don't believe that he can translate this book, can he?