1.当陈述部分的主语是I,而句子又用来征询对方的意见时,附加疑问句中的主语用you
如: I find English very interesting, don’t you
I don’t like that film, do you
2.当陈述部分的主语是everybody, everyone, someone, nobody, no one, somebody, anybody, anyone, none, neither 等合成代词时,附加疑问句中的主语通常用they
但亦可用he,尤其是nobody, no one 等作主语,具有否定概念时
如: Everyone is here, aren’t they
No one knows about it, do they
Somebody phoned while I was out, didn’t they
Everyone enjoyed the party, didn’t they
Nobody wants to go there, does he
3.当陈述部分的主语是不定代词 everything, nothing, anything, something 时,反意疑问句中的主语一般用it,不用they
如: Everything seems all right now, doesn’t it
Nothing is kept in good order, is it
Something must be done to stop pollution, isn’t it
Something is wrong with my radio, isn't it
当陈述部分的主语是指示代词 this, that 或 these, those 时,附加疑问句中的主语分别用it 和 the