Thepicturesitsentuswereverydisappointing.这句话有没有错误?句子结构是什么?

Question

The pictures it sent us were very disappointing.这句话有没有错误?句子结构是什么?

Answer 1

it 如果不是指某人（指公司或单位）就没有错
The pictures （主语）(that) （引导定语从句,省略）it （定语从句主语）sent （定语从句谓语）us（定语从句宾语） were （主句系动词）very disappointing（主句表语）.
而the picture 作为定语从句的双宾语,即定语从句原型：it sent us the picture.
由于也可以it sent the picture to us,
所以The pictures it sent to us were very disappointing.也正确.
而且 也可以 The picture has been sent to us
所以 The pictures (that) has been sent to us were very disappointing.正确.
而 还可以用过去分词做及物动词被动式定语从句的省略形式
所以 The pictures sent to us were very disappointing.也正确
但是,The pictures sent us were very disappointing.却是错误的.
send,give,take 等双宾语动词都有类似的用法.