我帮他学中文，他教我学英语。

I help him to learn Chinese, and he teaches me English.

youdao

我帮他学英语，作为回报，他教我打网球。

I help him with English. In return, he teaches me to play tennis.

youdao

我帮他学英语，作为回报，他教我打网球。

I help him with English. In return, he teaches me to play tennis.

youdao