1. benefit by [from] 受益于。如：

The plants benefited from the rain. 植物得益于这场雨。

We benefit from daily exercises. 我们得益于每天做操。

We benefited greatly by this frank talk. 这次坦率的谈话使我们获益匪浅。

People who stole did not benefit from [by]ill-gotten gains. 窃贼们并未从不义之财中得到好处。

Will the AIDS patients benefit from [by] the new drug? 这种药对艾滋病人有效吗?

We are sure to benefit from the new timetable. 我们肯定会得益于新的作息时间表。

He evidently benefited little from our advice. 很明显，他没有从我们的劝告中得到多少好处。

2. benefit sb (sth) 对某人或某物有益，使某人或某物受益。如：

The sea air will benefit you. 海边的空气对你有益。

The reign of a wise ruler benefits his country. 贤明统治者的统治有益于他的国家。

What he said benefited all the students. 他说的话使所有的学生受了益。

He has devoted his whole life to benefiting mankind. 他把自己的一生献给造福人类。

His work didn't benefit him; he got no money for it. 他的工作没使他受益，因为他分文未得。