He helps out and expects nothing in return.他出手相助，并不期望任何回报。

He will not help unless he gets something in return.除非他能得到什么回报，否则是不会帮忙的。

The prisoner told the police who had ordered the killing. In return, his sentence was reduced by two years.犯人向警方供出了这次谋杀的主谋，以此获得了两年的减刑。

I will lend you the money in return for a favor.我会借给你这笔钱，以此回报你的关照。

He worked in return for a free meal.他靠干活换来了一顿免费餐。