求英语大手帮小弟解决下困惑

问题描述:

求英语大手帮小弟解决下困惑
in general ,to和for在表达对.有什么不同比如be useful for 和be useful tosb以前课文上有be useful tosb老师叫我们记住,可刚刚才发现也有be useful for 的求说明下

A car is useful to meThis car is useful for me (that car is probably not, perhaps that car is useful for you)it is useful for me to have a carThis book is useful to me, and probably useful to you as...