serve的具体用法是什么?是用to,for还是什么?

问题描述:

serve的具体用法是什么?是用to,for还是什么?

1,serve+to do 对做.有用(有益于) This agreement will serve to promote the trade between Japan and China.此项协定有助于促进日本和中国之间的贸易.2,serve for 充当.serve for blanket 充当毛毯用...