he is looking after his keys ,but he can'tfind them.哪错了?

问题描述:

he is looking after his keys ,but he can'tfind them.哪错了?

既然不能找到 ,那就应该是找过了 应该是用过去时:
He looked after his keys,but he can't find them
英语不怎么好 应该是这样/