Question

英语题： 1.It is about two months ___ James leaves school.He is going to be a lawyer.

1. It is about two months ___ James leaves school.He is going to be a lawyer.
答案是before
问题是：我从来没见过before 用it is 形式的；只见过it was /will be形式；能不能各举一个例子。其次，为什么这里不用when？？

2. ___ turn is ___ to clean the balckboard?
答案给的是 Whose ;that'
可是不是"it's sb's turn to do "的句型么？为什么后面一空用that而不是it；是答案错误么？？

3. The seriously injured man has stopped breathing. ____ will be no possibility of making him come to life.
A.It B.There C.That D.This
选什么？？？麻烦解释一下为什么，以及其他几个为什么不可以？？

求解，回答一道也可以!

Answer 1

1：此句中，about已经体现了该句所说的将来的事情（将来时）:be about to do sth.将要做某事
2：理论上第二个空格可以用 it / this / that。可能是语境关系。不必深究
3：选B。 是there be 句型。 There will be no possibility...字面翻译：那个严重受伤的人，已经停止了呼吸，将没有可能活过来

Answer 2

1，it is是形式主语，真正的主语是two months，用when就变成疑问句了呀，例：It was 5 minutes after I saw you.那是在我看见你的5分钟之后。
2，答案错了吧.....应该是it做形式宾语.....
3，选A，如题1，it做形式主语
不懂问 谢谢