爱华网四、would rather, as if/though 以及wish后边that从句中虚拟语气的运用。
1、I am too busy these days. I would rather all of you _____ next month for a dinner.
A. come
B. would come
C. came
D. have come
(答案：C。would rather 后面的从句中，动词用过去式。)
2、He talks as if he _____ everything in the world.
A. knows
B. knew
C. had known
D. would have know
(正确答案为B。在as if/though后边的方式状语从句中，表示与现在事实相反或对现在的情况有所怀疑，动词用过去式;如果表示的是想象中的过去的动作，用过去完成时。本句表示对现在的情况有所怀疑。)
3、You look as if you had seen a ghost.
(此句中as if 后边是说话人想象中的动作，所以用过去完成时。)
4、I wish I knew his address.
(在wish后边的从句中，如果指现在或将来的愿望，动词用过去式。这句话告诉我们说话人并不知道他的地址。)
5、Peter wishes that he _____ law instead of literature when he was in college。
A. could study
B. studied
C. had studied
D. would study
(答案为C。表示过去没有实现的愿望，动词用过去完成时。)
五、在It is (high) time后边的that从句中，动词用过去式，表示该做某事了。
例：Don’t you think it is time you _____ smoking?
A. give up
B. gave up
C. would give up
D. should give up
(答案为B。)
虚拟语态的形式1、对现在的虚拟：(直接用动词的过去时....)
if I did /were.... I would.......
2、对将来的虚拟：if ..were to..I would....= if ..did...I would....
(此项与对现在的虚拟相同，但对现在的虚拟不用were to.
要区别对将来的虚拟和对现在的虚拟``一般句子里面都有时间标志``)
(If it were to rain tomorrow,we would not go out.
=If it rained tomorow,we would not go out.)
3、对过去的虚拟 If I had done....I would have done....
(If I had known the answer, I would have told you.)
(至于If ..had been done...would have done
前面的been只是因为是被动语态```所以要看句子的具体意思````)
固定句型的补充。
要用虚拟语态的句子:
I would rather I could......(I would rather she could not come here)
if only..(但愿....)
A:I will go to Korea next month.B:If only I could go with you
虚拟语态表示动作或状态不是客观存在的事实，而是说话人的主观愿望，假设，推测，命令，建议，要求等。
虚拟语态的基本结构(1). 与现在事实相反的假设：一般过去时(be用were)，主句结构{ should(would)等+动词原型}
例如：If they were here ,they would help you.如果他们在这，会帮助你的。
(2). 与过去事实相反的假设：过去完成时主句结构：{should(would)等+have+过去分词}
例如：If he had come yesterday,Ishould(would)have told him about it.如果他昨天来的话，我会把这件事告诉他的。
(3). 表示对将来不大发生的事的假想。一般过去时，were+不定式，should+动词原形;主句结构：{should(would)+动词原形。
例如：If you succeeded ,everything would be all right.如果你将来成功了一切都会好的。
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