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

別指望…會做;…不會做

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

別指望我4點以后工作。

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

卡拉不可能在便宜的餐館吃飯，不可能的。

（素材來自每日學英語，如有侵權請聯(lián)系刪除）