"totosingMaryisoftenlistenedinthenextroom.totosing.

Question

"to to sing
Mary is often listened_____in the next room.
to to sing .

Answer 1

断开来理解,
Mary is often listened to [to sing in the next room].
玛丽经常被听见 在旁边的房间唱歌.
此句是被动式.可还原为listen to Mary sing in the next room.
当变为被动句时,原宾语提前成为主语,则其动作以“to do"的形式改写.前面的"listened to"是固定用法,用以表主语被听见.