找一篇关于英语中虚拟语气介绍的文章,和一篇全是用虚拟语气的200字作文,

找一篇关于英语中虚拟语气介绍的文章,和一篇全是用虚拟语气的200字作文,

1.用于if引出的条件句中
虚拟语气用于if引出的与现在、过去及将来事实相反的条件句中.
1）与现在事实相反的假设
从句的谓语动词用过去式,系动词用were,主句的谓语用“should(would,could,might)+动词原形”.
If he were here,he would be greatly surprised.
The spaceship would burn up if it went too close to the stars.
2)与过去事实相反的假设
从句的谓语动词用“had+过去分词”,主句用“should(would,could,might)+have+过去分词”.
If I had been more careful,I wouldn't have made so many silly mistakes.
3)对将来发生的事实的假设
从句的谓语动词用“should(were to)+动词原形”,主句用“should(would,could,might)+动词原形”,主从句的谓语动词也可和“与现在事实相反的假设”的谓语相同.
If you should miss the chance,you would feel sorry for it.
If you missed the chance,you would feel sorry for it.
4)错综时间条件句
主句和从句的动作发生时间不一致,动词的形式应根据所表示的时间做出调整.
If I were you,I would have attended the lecture.(从句表示现在时间,主句表示过去时间）
5）连词if的省略
条件句中连词if可以省略,但从句要倒装,即将would,had,should等置于主语前.
Were he here this afternoon,I would go with him.
2.用于wish后的宾语从句中
虚拟语气用于wish后的宾语从句中,表示现在、过去或将来不太可能实现的愿望
1）表示现在的愿望
谓语动词用一般过去式,系动词用were.
I wish I knew his address.
I wish he were a teacher.
2)表示过去的愿望
谓语动词用“had+过去分词”
I wish I had not told him the news.
3)表示将来的愿望
谓语动词用“would(could,might)+动词原形”.
I wish I could read the novel in English.
3.用于as if等引起的从句中
虚拟语气用于as if(as though)引起的状语从句或表语从句中,表示与现在、过去或将来的情况不符,其谓语动词形式与wish后宾语从句的形式相同.
He often treats me as if I were a child.
Peter talked as if he had really been there.
He acts as if he would be a football star.
She looks as if she were ill.