1.
be necessary (for one) to do something (go somewhere)
（某人）必须做某事（去某处）
2.
"When I have to do something, I like to do it in my way."
"当我必须做某事的时候,我喜欢以我自己的方法来做。 "
3.
What must be done, must be done.
必须做的事情就必须做。
4.
No. You have to do something special to be famous. You have to kill a dragon.
不，一个人必须做某种很特殊的事情才会出名，他必须杀死一条龙。
5.
We must do all that is to be done.
我们必须做该做的事。
6.
promise to do what is needful
答应做必须做的事.
7.
I'll do what I must.
我必须做我该做的事。
8.
We must get something right.
我们必须搞清某事。
9.
You must do it beyond all things.
你首先必须做这件事。
10.
Is there anything that I have to do?
有什么必须做的事吗？
11.
We'll have to go about it more carefully.
我们必须细心去做此事。
12.
Leisure does what it likes; labor does what it must.
闲暇是做你喜欢做的事，而劳动是你必须做的事。
13.
make a virtue of necessity
把必须做的事装成出于好心做的
14.
You must do what ought to be done after due reflection .
在适当考虑之后，你必须做要做的事。
15.
You must give your full attention to what you are doing.
你必须全神贯注地做你所做的事.
16.
I must do this and I must do that.
我必须做这必须做那。
17.
Harry has to fight against bad wizards and do the right thing.
哈利必须和坏巫师作斗争，必须做正确的事情。
18.
Who makes everything right must rise early
要把事事都做好,必须坚持起得早