A2 必须，不得不
to need to or be forced
I have to go to San Francisco tomorrow on business. 我明天得去旧金山出差。
What time do you have to be there? 你得几点钟到那儿？
Do we have to finish this today? 我们今天必须把这事做完吗？
We'll have to start keeping detailed records. 我们不得不开始作详尽的记录。
Jackie's ill so they've had to change their plans. 杰基病了，因此他们不得不改变计划。
C2 …一定是真的
used to say that something must be true
That total has to be right - I've checked it twice. 那个总数一定是对的，我已经查过两次了。
That jacket's so garish. It has to belong to Jude.
We knew that her house had to be somewhere near.
Surely this scandal has to be the end for the campaign?
Her actions are so deliberate - she has to know exactly what she's doing.
See also: have modal verb
- More examples
- You have to go to college for a lot of years if you want to be a doctor.
- Those pictures will have to come down.
- We may have to sell the house, but I hope it won't come to that.
- Obviously teachers have to be good communicators.
- The children have to learn to tidy up after themselves.