怎样区别虚拟语气和条件状语从句

虚拟语气最主要的表现是在虚拟条件句。除此之外还有一些其他形式：
1. wish 从句中
2. it is time that we had a rest.
3. it is important/necessary/... that we should do ...
4. it is desired/suggested ... that we should do ...
5. He suggested that we (should) do
6. Long live China!

等等。可以参看:
http://zhidao.baidu.com/question/36548889.html?si=2&wtp=wk