例句：

　　I had to run like mad to catch the bus.

　　為了趕上公共汽車，我不得不拼命跑。

　　I stopped and waited for her to catch up.

　　我停下來等她趕上。

　　He stopped and let her catch up with him.

　　他停下了，讓她趕上自己。

　　If we leave now, I can catch the earlier flight.

　　我們要是現在動身，我就可以趕上早一點的航班。

　　He chased after the burglar but couldn't catch him.

　　他追趕那個盜賊卻沒有抓住他。