I am catching fish.(我正在抓魚。)

Maybe you're catching a cold.(也許你是感冒了吧。)

I was catching up on a bit of reading.(我正趕著讀點東西。)

The idea has been around for ages without catching on.(這個觀點由來已久，但一直未風行。)

They are catching butterflies.(他們在抓蝴蝶。)

A tearful husband repeated calls for help in catching the fiend who battered his wife.(淚流滿面的丈夫再三呼吁協助抓住毆打他妻子的那個惡棍。)

Catching snakes is a full time job and they don't often have a day off.(抓蛇是一項全職工作，他們通常沒有休息日。)

The ladies spent some time catching up on each other's health and families.(女士們花了些時間聊聊彼此的健康和家庭情況。)

Enthusiasm is very catching.(熱情是非常具有感染力的。)

Try to be as enthusiastic as possible (enthusiasm is catching)!(盡量表現出熱情（熱情具有感染力）！)