Much to the couple’s comfort ,their income is now double what it was five years ago.

问题描述:

Much to the couple’s comfort ,their income is now double what it was five years ago.
what it was five years ago式表语从句还是宾语从句?
now double做什么成分?
double是adv.还是vt.

宾语从句
double表语
double是adj可是我们老师说"what……"是表语从句.如果是宾从,谓语动词在哪?求助!!!!!!你的老师是对的,表语从句。我的解释不对。谢谢。