见某些形容词要虚拟
Urgent， necessary， important， possible， essential， incredible， natural， ridiculous， vital， imperative1， crucial， critical， proper， compulsory2， etc.
形容词带的从句 ： It is important that every member （should） inform himself of these rules.
主语从句 ： It is decided3 that the meeting （should） be postponed4.
宾语从句 ： He insisted that his daughter （should） come.
表语从句 ： The doctor's advice is that the patient （should） be kept quiet.
同位语从句 ： He gave order that the guests （should） be hospitably5 entertained.
考试试题 ： They demanded that the right to vote（give） to every adult person. [（should） be given]
For a child to give up less mature idea for a more sophisticate one， it requires that the child ____ psychologically ready for the new idea. 华夏大地教育网博客j/JE~r6q X
A.is B.be C.were D.would be
第二种类 ： if 的非真实条件句 （ 可能性小或没可能 ）
注意 ： if 可以引导真实条件句 ， 多是条件状语从句 .
第二种类虚拟语气 （ 时态到推的定义 ）
If + 从句主句与目前事实相反If+ 主语 .+ were华夏大地教育网博客.aJ.G `6f0|]
+ V.ed主语 + should + V.华夏大地教育网博客f,t_8wY7e
+would + V.华夏大地教育网博客 DFZ;R9~+Hk@
+could + V.
#x V,Fkl9{）x0与过去事实相反If+ 主语 .+ had+ done
K）A6O9u/xZ0 + been主语 + should + have+ p.p.
qC H%k*\e B0+would + have+p.p.华夏大地教育网博客/b h \B ` M
+could + have+ p.p.华夏大地教育网博客g5X3Po F:I8|#C H
+ might+ have+ p.p. 与以后事实相反If+ 主语 .
U}（F DlDE^0 + were to do/be华夏大地教育网博客]s,k F3QN0k
+should do/be 主语 + should + V.
N K2tw~V4AvO0+would + V.
|-kPS%f0+could + V.
1fpm V K9c1?0+might+ V.
第二种类虚拟语气举例省略 if 的倒装
5~/F！V dE%t k }.n0were， had ， should.
If the doctor had been available， the child would have been saved.
Had the doctor been available， the child would have been saved.
考试试题 ：
_____for your help， I would not have overcome the psychological pressures and tensions.
A. Had it not been B. not been C. Without being D. not having been
特殊虚拟
Even if 形式上与 if 相同
Wish 形式上大体与 if 从句相同
从句谓语与 Wish 同时 Wish+ 主语 +V.ed/were
I wish I were as young as you.
从句谓语发生 Wish 之前 多用 Wish+ 主语 +had done（been）
I wish that he had not made so much trouble.
