We'd better take his advice(改为否定句)答案上是 We'd better (not take) his advice

问题描述:

We'd better take his advice(改为否定句)答案上是 We'd better (not take) his advice
我就想知道为什么回这样改,为什么不用don't 或者isn't
We'd 是we would 的缩写吗

had better do sth否定 直接加not
had better not do sth 固定语法