she ( ) often ( )【hear】to sing in her room

问题描述:

she ( ) often ( )【hear】to sing in her room
答案是she is often heard to sing in her room.
为什么?.

她经常被听到在她房间里唱歌.因为有often,所以用一般现在时,唱歌是被听到,所以用被动,那么就是is often heard了