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。