请问to somebody ,for somebody ,with somebody的用法怎么区别?如题我不知道什么时候用to,何时该用for和with

to somebody 通常是指给某人
for somebody 通常指为了某人而去干嘛 专门指定给某人
with somebody 通常指和某人去干嘛

to = 指向
take this to him
(给...给谁呢? 给他)
for = 对..来说
this would be hard for him
with = 和
i went to the store with him