分析一下复合长句The first thing i believe we absolutely must do is to reduce the amount we use our carsThe first thing 主语i believe 省略that的定语从句那么 we absolutely must do 是什么成分?is to reduce the amount we use our cars 又做什么成分?
问题描述：
分析一下复合长句
The first thing i believe we absolutely must do is to reduce the amount we use our cars
The first thing 主语
i believe 省略that的定语从句
那么 we absolutely must do 是什么成分?
is to reduce the amount we use our cars 又做什么成分?
答