He doesn't like to be caught without any biscuits in the house. 他喜欢家里备些饼干。
You don't want to be caught without a face covering when you're out.
You don't want to be caught without supplies when you live so far from a supermarket.
Wherever I go, I always carry a bottle opener with me. I don't like to be caught without one.
I don't like to be caught without a jar of peanut butter in the cupboard.
See also: catch verb (DISCOVER)