I heard he is singing.是病句么?

I heard he is singing.是病句么? I heard him singing there改被动句是heard singing还是heard to sing I heard someone is singing.(改为简单句) He heard someone singing in the next room.请问这里的宾补sing为什么加的是i 是I heard her singing对还是I hear her singing对 I heard the girl singing a song,为什么是用heard he was heard singing=he was heard to sing? I heard him singing when I pass his room.改被动（主语为he） I heard he was singing in the next room.I heard —— ——in the I heard he was singing in the next room.是什么从句? 连词英语.cutting ,while,I,hair ,heard ,he ,my ,was ,singing ,som 连词成句初二英语1.cutting ,while,I,hair ,heard ,he ,my ,was ,singing