have got to 应该做……

同理，have got to+动词所表达的含义与 have to+动词一样。I've gotta go 可以缩略为 I gotta go,因此 I gotta go 的原型是 I have got to go。

例句：

I've got to run. I'll call you later.

我得赶紧走了。回头给你打电话。

I have (got) to go. I have to ring up now.

我要走了。(电话）我得挂了。

You've got to be kidding!

开什么玩笑！

对话：

A: I've got to tell you something.

我有话要对你说。

B: No, no. You don't have to explain yourself to me.

不用了，没必要和我解释。