Do you think it necessary to learn to wait in line 我总是觉得it 要变成it is
问题描述：
Do you think it necessary to learn to wait in line 我总是觉得it 要变成it is
答
都正确
一个是形式主语
一个是形式宾词
答
Do you think (that) it (is ) necessary to learn to wait in line , it作主语时that和be动词可以同时省略
记得初中时有一篇文章里有一句I found it very difficult to get to sleep,牢记一句话，以后就不会犯错了
答
变也可以,但句子结构也变了,一般情况都是用第一句.
Do you think it necessary to learn to wait in line .简单句
Do you think it is necessary to learn to wait in line 宾语从句