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, noone, 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?4.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 they。如：This is important, isn’t it?That isn’t correct, is it?This is a plane, isn't it?These are grapes，aren't they?These are your friends Tom and Jack, aren’t they?5.如果陈述部分是以代词 one 作主语，附加疑问句中的主语在正式场合用 one，非正式场合用 you,在美国英语中，在非正式场合还可以用he。如：One should be ready to help others, shouldn't one?One can’t be too careful, can one?或 can you?One should do his duty, shouldn’t he?6．如果陈述部分用 I’m…结构，附加疑问部分一般用 aren’t I/ain’tI/am I not。如：I am strong and healthy, aren’t I.I am working now, ain’t I.7．当陈述句为 there be 结构时，附加疑问句中的主语也用 there。如：There’s no help for it, is there?There’s something wrong, isn’t there?8．陈述部分带有seldom, hardly, never, rarely, few, little,nowhere,nothing, not, no, no one, nobody, none, neither, never 等否定词或半否定词时，...
