看两个英语句子He was laughed at by them.They laughed at him.怎么看出来是被

看两个英语句子He was laughed at by them.They laughed at him.怎么看出来是被 The boy laughed at is my son.The boy who was laughed at is m The more angry he became,the more she laughed at him. She laughed at the ( )show John was ________ when his girlfriend laughed at his shortco The boy who was laughed at is my son. 英语被动语态一个问题Everyone doesn't like to be laughed/laughed at?加不加 the little boy laughed at the king,because he is 主动语态改被动语态1.All the people laughed at him 2.They made the bik Bcause she has been laughed at by her classmates句中为什么要跟上at? The boy you laughed at is my son.The boy at whom you laughed The boy you laughed at is my son.The son at whom you laughed