Run after

追赶；追逐

He spends lots of money running after girls.

他花了很多钱追女孩。

If you run after two hares,you will catch neither.

两只兔子都逮，一只也逮不着。

A:What's the rush?

什么事这么匆忙?

B:It's just, I was late, so I have to run after the bus.

就是，我迟到了，不得不追赶公共汽车。

A:Oh, god, do you want me to get you a drink?

哦，天哪，你要我帮你倒杯水吗?