go back 回去

如go back to school...比如You have to go back to school when this summer vacation is over.

所以go back和come back的区别,就是go back是回去

come back是回来

get back的意思蛮多的,不一定是回去到某个地方,还可以使回去/返回到某种状态

比如

I have to get back to work immediately because I haven't finished the proposal yet.

我必须马上回到工作状态,因为我还没有写完我的提案.

get back如果中间加个东西意思就变成把.取回

Can I get my book back?

我能把我的书要回来么?

He got his former job back.

他重获旧职.

所以总的来说,关于get back你记住它有三个基本意思就可以了

1.回到某个地方

2.返回到某种状态

3.拿回,取回