you won't catch sb doing sth

said to mean that you will certainly not see someone doing a particular thing or in a particular place

别指望…会做;…不会做

You won't catch me at work after four o'clock.

别指望我4点以后工作。

You won't catch Carla eating in a cheap restaurant.

卡拉不可能在便宜的餐馆吃饭，不可能的。