1、以Let's开头的祈使句,反意疑问句用shall we。如:
Let's go, shall we?
2、如果陈述句的谓语动词为used to,反意疑问句既可以用didn't,也可以用usedn't。如:
You used to go to school on foot, didn't you/ usedn't you?
3、 must have+过去分词+具体的过去时间,反意疑问句用didn't。如:
The boy must have got there yesterday,didn't he?
4、如果陈述句是复合句,且主句的主语和谓语分别是I think, I guess, I suppose, I believe, I imagine等时,反意疑问句的人称和数要与从句保持一致;如果主句的主谓不是以上结构时,则反意疑问句的人称和数要与主句保持一致。如:
I don't think the boy is a student, is he?
He believed Mary could do it well, didn't he?
5、 如果陈述句的主语是none of+名词,反意疑问句的人称和数要与该名词保持一致。如:
None of the chalk is yellow, is it?
None of the boys are university students, are they?
6、如果陈述句的主语是no one, none, nobody, nothing等含有否定意义的不定代词时,反意疑问句要用肯定式(但含有否定前后缀的否定词除外)。如:
No one was there that day, was he/ were they?
7、如果陈述句的主语是someone, anyone, everyone, no one, somebody, anybody, everybody, nobody时,反意疑问句的主语可以用they,也可以用he,为避免性别歧视,现代英语多用they。如:
Everyone likes him, don't they/ doesn't he?
8、如果陈述句的主语是不定式、动名词、主语从句或this, that时,反意疑问句的主语用it;如果陈述句的主语是these, those时,则用they。如:
This is yours, isn't it?
Seeing is believing, isn't it?
Whether we will come to the party or not is up to him, isn't it?
These are not yellow in color, are they?
