for 表原因,be late for +会议、school 会议、school 迟到
be famous for sth 因某事闻名
for sb,sb do sth 为了某人,某人做了某事
with表伴随 with a book in hand ,the teacher came in .老师手里拿着一本书进来了
with sth 带着,拿着某物
to表目的 open the windows to let the fresh air in开开窗户把新鲜空气放进来
不定式to do
作介词时 to (doing) sth
from 从哪儿来,表来源 she comes from america 他来自美国
by通过,被 he finished the task by working on it for a whole night他一宿没睡觉把这个课题完成了
he was beaten by the strong enemy他被强大的敌人打败了
剩下就没法说了,因为英文是语言,不是物理化学生物,不是可以用记公式的方式来学的,主要还是平时听课,注重积累