that is your twin brother,----?反义疑问句是 isn't he 还是isn't it?
问题描述：
that is your twin brother,----?反义疑问句是 isn't he 还是isn't it?
答
反义疑问句：isn't he your twin brother
答
在反意疑问句中，附加疑问句的主语要用相应的代词。当陈述句的主语是 this，that，something，everything，nothing 和动词不定式短语，（V-ing）动名词等时，附加疑问句的主语应为it;当陈述句的主语是these, those时, 附加疑问句的主语应为they。
所以这里应该用isn't it ?
答
hat is your twin brother,isn't he?
反义疑问句前面肯定后面否定
前面否定后面肯定
这边前面是【is】是肯定,所以填【isn't he】