He's amazingly cheerful considering all he's had to go through.

经历了种种磨难，他还那么乐观，令人惊叹。

《牛津词典》

I was sad that she had to go.

知道她得走了，我心里很难过。

《牛津词典》

I had to go to the hospital.

我得去医院看病。

《牛津词典》

He had to go into the woods alone that year because Seth had moved to another part of the country.

VOA: special.2010.06.26

And that you might look at, for example, that first example, and say, man by this stage it was already sorted, yet it had to go through and check that the third element was in the right place, and then the fourth and then the fifth and then the six.

你可能会去看看例如第一个例子，然后要抱怨，到这里,它已经是排好序的了,但他还是得去遍历查看,第三个元素是不是在正确的位置,然后第四个，第五个，第六个。

麻省理工公开课 - 计算机科学及编程导论课程节选

But when I had to go... I had to find a book that was in the business school library and I went there.

但当时我必须去……我不得不去商学院的图书馆找一本书，于是我就去了。

哥伦比亚的氛围 - SpeakingMax英语口语达人

"I knew I had to go wherever the people were suffering, " Mrs Klarsfeld said.

BBC: NEWS | Special Reports | 'Our hunt for the Nazis is over'

Her brush with death made her decide once and for all: The weight had to go.

CNN: Family loses 300 pounds together

So the king has had to go cap in hand to his rich neighbour, South Africa.

ECONOMIST: Africa��s last absolute monarchy may be falling apart