to 是一个有比较目标的东西I go to school.for 是比较关于到对象This present for you.The knife is use for cut.by 是如何完成 原因之类How to you go to school?I go to school by bus.How can you cut this bread?I cut this bread by knife.of 多数是指这东西属于谁还是属于什么东西I am the son of my father.This is the pricipal of our school.at通常都用在地点
时间: 2024-10-10 09:58:05