当他有困难时，他们帮助了他。

They helped him when he was in trouble.

youdao

每当“城市森林之友”（FUF）通知他们有树木需要帮助时，他们就开始工作。

They set out to work whenever the FUF informs them of a tree in need.

youdao

每一次，我都会感到惊讶，因为有了他们的帮助，工作变得更轻松了。

Each time, I would feel surprised that the work was lighter because of their help.

youdao

The better prepared students have to formulate the concepts, so that they can explain them, which really helps.

准备更好的学生得,建立知识概念，那样才能解释他们，这对他们非常有帮助。

麻省理工公开课 - 媒体、教育、市场课程节选

and then I could see it really help people, you know, with their lives and everything and

然后我看出这真的对别人有帮助，帮助他们的生活和一切，

成为教练的理由 - SpeakingMax英语口语达人

But here I have the opportunities to someone something, and then you see them act upon it in a month's later, a year's later.

但我能有机会去帮助别人，并看到他们能因此在一个月后,甚至一年后，收到效果，作出改变。

普林斯顿公开课 - 人性课程节选