The boy standing there is a classmate of mine.boy后面为什么不加is?

the boy is standing behindthe door Do you know the name of the boy standing at the gate?为什么用standing The boy is standing behind the girl改为同义句 The boy is my brother.The boy is standing at the door.合并:The boy who is standing at the door isThe boy is my brother.The boy is standing at the door.合并:The boy who is standing at the door is my brother.省略：The boy standing at the door is 组成句子：found a they standing boy the door at . The boy standing there is my friend的同义句 There is a boy ( )at the door.A.stand B.standing C.stood D.is standing The mother made the boy standing in the rain.为什么用ing the name of the boy standing at the gate算不算介词短语做后置定语? The boy standing there is a classmate of mine.boy后面为什么不加is? The boy is standing on the man`s shoulders.（改为一般疑问句） The boy is standing in the garden which in front of a tree的原序 The boy is standing on the man's shoulders.改为一般疑问句,并否定回答 The boy __(stand) near the big tree looks like Daniel为什么是standing 呢 The boy who is standing at the door is my brother.who is 可以省略吗 1：The policeman asked the boy ( ) why he was standing in front of a broken widow the boy was standing a__the window when the bell rang.补全单词 The boy (standing/standed)in the office was found smoking yesterday.