but a good general to follow is to sleep as long as we have to in order to feel happy这里的to follow 是什么用法,还有为什么不用被动.后半句是and be able to work at our best when we awaken
问题描述：
but a good general to follow is to sleep as long as we have to in order to feel happy
这里的to follow 是什么用法,还有为什么不用被动.
后半句是and be able to work at our best when we awaken
答
to follow 是不定式作后置定语修饰genetal ,这种情况一般不用被动,例如：
I have much work to do.