Find的用法(Find sb. do sth.或Find sb. doing sth.)

find sb doing sth意思是发现某人正在做某事。
find sb do sth 意思是发现某人做了某事,已经做完了.
just now 是刚才的意思．．．是过去时．所以那个题答案是lie

find sb doing sth意思是发现某人正在做某事。
主句的谓语动词为感官动词see, hear, watch或find等时，宾语从句常简化成“感官动词find＋宾语＋宾语补足语”结构，此时宾语由从句的主语转化而来，而宾语补足语多为不带to的不定式或V-ing形式。如：
I found that some children were playing in the park.→I found some children playing in the park.

刚刚我发现一个老人躺在外面.
强调发现时老人的状态,所以用lying.

不是 最终答案是 lying ，found sb doing sth