1．当陈述部分含有：not, no, little, few, hardly, nobody, nothing等表示否定意义的词时，反问部分用肯定。如： Nothing is wrong with your car, is it? 你的小汽车没坏，是吗？ He has never been to the Great Wall, has he? 他从没去过长城，是吗？

　　2．当陈述部分的主语为someone, somebody, everyone, everybody, nobody时，反问部分主语用相应的代词they。如： Everybody is excited at the wonderfull news, aren't they? 每个人都因这个好消息而流动，是吗？ Nobody came here while I was out, did they?我出去时没有人来过这儿，是不是？

　　3．当陈述部分含'd like或'd rather时，反问部分助动词用would。如： You'd like that book, wouldn't you ? We'd rather stay at home htan go to the cinema, wouldn't we?

　　4．当陈述部分含'd better或had better时，反问部分的助动词用had。如： You'd better stay here for another two weeks, hadn't you? 你最好在这儿再过两周，是吗？ We had better not get off the bus here, had we? 我们最好不要在这儿下车，是吗？

　　5．当陈述部分含have to, has to, had to时，反问部分应用相应的助动词do, does或did。如：I have to clean the room now, don't I? She had to look after her mother last week, did't she?

　　6．当陈述部分带有否定前缀或否定后缀词时，陈述部分视为肯定句，而反问部分用否定的。如：It's too unfair, isn't she? 太不公平了，是吗？ Helen is careless, isn't she?海伦粗心，是吗？

　　7．当陈述部分为肯定句且含有used to时，反部分可用usedn't或didn't。但当陈述部分为否定形式时，反问部分助动词应和陈述部分保持一致。如： There used to be a hospital in this street, didn't there? 这条街上曾经有一所医院，是吗？ She usedn't to go to the park, used she? 她过去不常去那个公园，是吗？