Question

have to和have got to有什么区别？

Answer 1

这三组词中，把get to剔出来，这个词除了和have got to在词形上有点相似外，意义上没有关联。

1 get to=arrive in/at 到达

We got to Beijing that evening.

2 have to和have got to意义是相同的，很多时候两者可以互换，但是意义虽相同，结构并不完全相同（疑问句和否定句中）。have got to没有那么正式，常用在口语中。需要注意的是have to可用于多种时态，而have got to只能用一般现在时

3 在意义上，have to和have got to都表示“不得不”，这种“不得不”往往暗示某事是迫于外界原因而去做的事情。

You’ve got to/have to drive more slowly! We’re in a 30-mile-an-hour zone.

4 当和频度副词（always, often, usually, never等）一起使用时，常用have to，不用have got to。

I often have to work at the weekend to get everything done.

5 句式示例

肯定句

① I have to study for the exam.

② I have got to study for the exam. （have got to常用作缩写形式='ve got to）

否定句

① We don't have to pay for children's food today.

② We haven't got to pay for children's food today.

一般疑问句

① — Do I have to buy the ticket?

— No, you don't. I've got one for you.

② —Have you got to leave now?

—Yes, I have.

特殊疑问句

① What do I have to do to get a driving licence?

② What have you got to do before you take the test?

Answer 2

意思一样，都是“不得不/只好”，只不过 have got to 多用于口语。