Question

I thought you had done it 怎样变反义疑问句

Answer 1

I thought you had done it，hadn't you?

含有think, believe, suppose, imagine, expect等动词后接宾语从句构成的主从复合句在构成反意疑问句时，视情况不同有两种不同的构成方式。 　　
(1)当主句的主语为第一人称时，其后的简短问句应与从句相一致。例如：
I expect our English teacher will be back this weekend, won't she/he?
I don't believe that he can translate this book, can he?
(2)当主句的主语为第二、三人称时，其后的简短问句则应与主句相一致（此时，否定只看主句，与从句无关）。例如： 　　Your sister supposes she needs no help, doesn't she?