We have been brought up to fear insects.这里面的to fear insects说是做we的补足句,to 是什么用法

We have been brought up to fear insects.这里面的to fear insects说是做we的补足句,to 是什么用法
We have been brought up to fear insects.这里面的to fear insects说是做we的补足句,to 是什么用法

We have been brought up to fear insects.这里面的to fear insects说是做we的补足句,to 是什么用法
We have been brought up to fear insects.
这里面的to fear insects是做we的补足句,这里的to fear insects 是不定式短语,可以这么看这个句子：
We fear insects,所以to fear insects是we的补足语.