it was found to be over thirteen feet long 请问to be如何理解和解释,

it was found to be over thirteen feet long 请问to be如何理解和解释, it was found to be over thirteen feet long这里的to be 可以省略吗? When it was eventually brought to shore,it was found to be o long for the summer to be over 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 请问如何理解这句话 He said it would be a disastrous foreign policy to ______to this problem is expected to be found before long . We found that it was too hard to find out the differences be I found it was pleasant to be with your family. 这是什么从句?以及翻译下 I found it was pleasant to be with your family that为什么省略?