麻烦进来一下It was necessary for a site to be found for it.请问这个句子对

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麻烦进来一下
It was necessary for a site to be found for it.请问这个句子对吗?如果对的话用的是什么语法?我记得 it's necessary for sb to do 是这个句型可是这里面的for 后面居然是事物；

对的,主要看necessary for 后面跟的人/物与后面谓语动词之间是主动还是被动的关系,
当sb/sth与to后面的谓语动词之间是主动关系,用 it's necessary for sb/sth to do 这个句型；
当sb/sth与to后面的谓语动词之间是被动关系,用 it's necessary for sb/sth to be done 这个句型.
举例说明,如下：
1、it's necessary for Tom to go to school.Tom与go之间是主动关系.
2、it's necessary for the flowers to be watered.flowers是花,与water浇水这个谓语动词之间是被动关系,因为花不会自己浇水,只能是被浇水.

麻烦进来一下It was necessary for a site to be found for it.请问这个句子对 A site had to be found for it.It was necessary ____ for it a site had to be found for it. it was necessary___for it A site had to be found for it.A.a site for it; B.for a site A site had to be found for it._____ had to be found a site had to be found for it.___had to be found. a site had to be found for it,为什么有for it,没有可以吗 a site had to be found for it 这里found不是动词吗,为什么要加be? 句子改写,1 it will be necessary for you to see a doctor.（改为一般疑问句 I think it necessary for him to go there at once.我想问一下这个句子有没 It is necessary for us to master a foreign language.请问for us it was necessary for him to go out last night