I am not as tall as your sister,aren’t I?这句话对吗

I am not as tall as your sister,aren't
我不如你姐姐高,对吗?
这个反意疑问句是对的,前面是肯定,后面是否定.陈述部分的主谓是I am,但am的否定式是没有缩写的,所以疑问部分要用aren't来代替am not.是aren't I还是are I因为前面是肯定，所以疑问部分是否定，填（aren't I）。有not哦，不好意思，审错题目了。题目的这句话是错的，要改为：I am not as tall as your sister，（am I）? 前面说的解释适用的场合是这样的：I am as tall as your sister，aren't I? 如果前面没有not，就对了。