The question is which of us should come first.这个表语从which做什以成份
问题描述：
The question is which of us should come first.这个表语从which做什以成份
答
The question is which of us should come first.
问题是我们中的哪个人应该先来
这个表语从句,which在从句中作主语,which of us 我们中的哪一个人which of us才是主语吧，which我就觉得是定语吧，不敢肯定才上来提问的which是主语，of us 是介词短语表示范围,宾格us 不能作主语也是哦希望对你有帮助，以后有问题可找我