he has come late,isn't it?反义疑问句为什么要用isn't it?

that is your twin brother,----?反义疑问句是 isn't he 还是isn't it? He thinks it isn't good for you,___ ____?反义疑问句 Someting must be wrong with your car.为什么反义疑问句是isn't it而不是Mus 关于反义疑问句He isn't often late for school ,is he?回答:____.He alwa It isn't worth it 中为什么后面要加it?而不是It isn't worth 反义疑问句 It is a hot day,isn't? yes,it is. 中文翻译 谢了 关于英语否定疑问句：isn't it Isn't he a Isn't he a student?这句话是不是反义疑问句?如何回答? say it isn`t no,it isn't isn't it nice it seems that he is right,isn't right?为什么要用right?