成长英语：虚拟语气学习

一：虚拟语气在if非真实条件句中

1、与现在事实相反，从句过去式be-were，主句should/would/could/might/+do

If I were you, I would accept his advice.

2、与过去事实相反，从句had done,主句should/would/could/might+have done

If you had studied hard before, you would have passed the exam.

3、与将来事实相反，从句过去式be-were/should do/were to do,主句should/would/could/might/+do

If it rained(should rain/were to rain)tomorrow, I would stay at home.

二：省略if 的倒装

if从句中，省略if，were,had,should 可以放在句首，否定词not不可以放在句首

1、If I were you, I would accept his advice.

Were I you,

2、If you had studied hard before, you would have passed the exam.

Had you studied hard before,

3、If it should rain tomorrow, I would stay at home.

Should it rain tomorrow,

三：错综时间虚拟语气

从句和主句时间不一致时，动词形式要根据句子表达的时态作出调整

If you had studied hard before, you would be a college student now.

四：含蓄虚拟语气

在虚拟语气中并不总是出现if引导的从句，有时用otherwise、or、without、but for

I was ill that day ,otherwise,i would have taken part in the meeting

If i hadn"t been ill that day，

五：虚拟语气在主从句中的使用

主语+ （should）+动词原形

1、it"s necessary/important/……that 主语+ （should）+动词原形

it"s strange that he (would )say so.