卖力的英文：
put a jerk in it

参考例句：

The man is an eager beaver.
那人工作很卖力。

"Hey, clam up, will you! I've heard enough already about how hard you work in the office!"
咳,你别说了,行不行!我已经听够了你在办公室工作多卖力的话了。

Li Ming works harder than Wang lin ( does ) .
李明工作比王林卖力。

He is always sweating(away) at his job.
他总是很卖力地工作。

Up in the stands, off by himself, he was playing the trombone - playing his head off.
他独自一人在台上，卖力地演奏长号。

She worked hard to earn money for the maintenance of her family.
她卖力干活为了挣钱养家糊口。

They worked hard to perfect their dance.
他们卖力地使舞蹈更加完美。

The capitalists of our times continued vigorously to cultivate white chauvinism
当代的资本家继续卖力地培养白种沙文主义。

The boy is worth his hire because he is a hard worker.
给男孩那些工钱是值得的，因为他干活很卖力。

If we get stuck in we can finish this job by tonight.
如果我们开始卖力干，今晚我们能完成任务。

put是什么意思：
v. 放，置，使处于；表达，说明

put a crimp into
妨碍|束缚

Put on the screw
施加压力

strike [ put on ] a pose of
装出...面貌[样子]

I put it on the books.
我把它挂在账上。

The candidate was put in the other day.
这个候选人不久前当选了。

jerk是什么意思：
v. 急拉，猝然一动
n. 急拉，猛推；蠢人，傻瓜

The car jerked to a halt(stop).
车猛地停住了。

The knife was stuck but she pulled it out with a jerk.
那把刀子被卡住了，她猛地一拔，把它拔了出来。

You shouldn't jerk the camera when you press the button.
按按钮时，不要晃动相机。

That jerk nearly tossed my orange juice to the ceiling.
这次颠簸几乎把我的橙汁颠到天花板上去了。

Jake's head jerked up at the throb of the engine.
听到发动机的轰鸣声，杰克猛地抬起了头。