When I arrived, I found the boy_____there A seating B seated C is seating D satted答案、、B、、seat应这样使用sb be seated.所以seat和boy是被动关系,宾不和宾语是被动关系,故宾不应用过去分词...被动形式表主动意义,常见的用被动形式表主动意义的词或词组有以下这些:  1.be seated坐着,就座,相当于seat oneself.如:  He is seated on a bench.→ He seats himself on a bench.  他坐在凳子上.  Please be seated,ladies and gentlemen!  女士们,先生们,请就座! 既然(用被动形式表主动意义的词或词组有以下这些:  1.be seated坐着,就座,) 那还为什么(sb be seated.所以seat和boy是被动关系)呢?

问题描述:

When I arrived, I found the boy_____there A seating B seated C is seating D satted
答案、、B、、seat应这样使用sb be seated.所以seat和boy是被动关系,宾不和宾语是被动关系,故宾不应用过去分词...被
动形式表主动意义,常见的用被动形式表主动意义的词或词组有以下这些:  1.be seated坐着,就座,相当于seat oneself.如:
  He is seated on a bench.→ He seats himself on a bench.
  他坐在凳子上.
  Please be seated,ladies and gentlemen!
  女士们,先生们,请就座! 既然(用被动形式表主动意义的词或词组有以下这些:
  1.be seated坐着,就座,) 那还为什么(sb be seated.所以seat和boy是被动关系)呢?

可以省略!

这里是省略了who was,不违背be seated的用法