He went to the market (to) buy some vegetables.The government warned some factories not (to)pollution the water again.为什么这两处用to?
问题描述：
He went to the market (to) buy some vegetables.
The government warned some factories not (to)pollution the water again.为什么这两处用to?
答
第一个是；想要
第二个是Don't的拆开形式。
答
第一个是 不定式短语作目的状语
第二个是 warn sb not to do sth
答
He went to the market (to) buy some vegetables.这个to是不定式作状语,表示目的,为了.The government warned some factories not (to)pollute the water again.这个to是用在warn sb （to） do sth 做宾补 警告某人...