We often hear him sing in the park.该句的所有的语法

I have (hear) of him.We often hear Jay,but we didm't hear Him.A,of,from B,from,of C,abou We can often hear him( ) English in the morning every day.是用reading还是read? we often hear him play the violin at home 改为被动语态 We often hear him sing in the park.该句的所有的语法 We often hear him sing in the park中哪个是补语 什么是补语? Do you often hear John ______ in his room? Listen ! now we can hear him ____in his roomGive me a reason ------Do you often hear John ___in his room?----Listen,now we can hear him ____in his room .%Dª singing,singingB sing,singingC to sing,singing we often hear the girl ( ) (sing) song. I often hear him _____ ( sing ) in the next room. I often hear him ( ) in the room I often heard him ( ) in the room We often hear him ______ in the classroom.A.sing B.singing C.to sing D.sung到底是选sing 还是singing呢 具体理由 分析句子成分：We often hear him sing in the hospital.这句话中有复合宾语么?in the hospital 是什么成份呢? we often hear the girl sing this song转被动 改被动:We often hear them sing in the classroom. we often hear her singsing songs next door 改被动 I often hear him sing the song in the room.变为被动语态 I often hear him（）in the next room.（sing） I often hear him _____ ( sing ) in the next room.为什么答案上要求加ing?