After missing a term through illness he had to work hard to catch up with the others.

他因病休学一学期，不得不努力学习好赶上别的同学。

《牛津词典》

He had to work hard to do things that were easy for others.

别人觉得容易做的事情，他必须努力去做才行。

youdao

His father died when he was only 3 and he had to work to help his mother.

他的父亲在他只有3岁的时候去世了，他不得不工作来帮助他的母亲。

youdao

He had to work quickly and exactly.

VOA: special.2010.07.07

This depiction of matter takes you right up to E=MC E=MC And, that's all he had to work with for data.

物质的叙述，让我们一直等到,的平方，天才。，squared。，Brilliant。,那是他研究数据所得出的成果。

麻省理工公开课 - 固态化学导论课程节选

That's all he had to work with But, science doesn't always move forward.

那就是他的研究,但是，科学并不是一直前进的。

麻省理工公开课 - 固态化学导论课程节选

"Given what he had to work with, this is the single best closing I've ever seen, " Mr. Oliver said.

WSJ: As Jury Meets, Son Accuses Sandusky

The AFIs picked up some of his expenses, but he had to work a second full-time job, as a stonemason.

NEWYORKER: The Kingpins

He had to work 40 hours a week and was paid a fixed salary, even if there was no withholding!

FORBES: Even Consulates Have Independent Contractor Problems!