假造语气的内容次要有三大模块，第一模块就是触及到前提从句部门的内容。这一部门的假造语气次要表现在三个方面：根本用法，各不相谋，和委婉之美。

假造语气的根本用法是甚么

前提从句的谓语动词情势主句谓语动词情势与已往究竟相反的假定had donewould/could/might/shouldhave done与如今究竟相反的假定did(was→were)would/could/might/shoulddo与未来究竟相反的假定did(was→were); should do;were to dowould/could/might/shoulddo

凡是，在下面表格里反应的长短实在前提句的假造语气形式，从句和主句的谓语动词工夫是分歧的，假如二者工夫纷歧致，此时就是混淆型假造语气。混淆型假造语气的利用请求“各不相谋”，即从句和主句按照各自假定的工夫差别，接纳下面表格中对应的的谓语动词情势。

假造语气用法有什么

假造语气在前提从句的用法

前提句有两类，一类是实在前提句；一类长短实在前提句，也就是假造前提句。

假如假定的状况是有能够发作的，就是实在前提句，谓语要用陈说语气。如 If it doesn’t rain tomorrow, we will go to the park.

假如假定的状况是已往或如今都不存在的，或未来不大能够发作的，则是假造前提句。如 If he had seen you yesterday, he would have asked you about it. 在含有假造前提句的复合句中，主句和从句的谓语都要用假造语气.

错综工夫前提句

偶然前提从句的行动和主句行动发作的工夫纷歧致，这时候需求按照意义接纳暗示差别工夫的动词情势来停止调解。

If she had taken the doctor’s advice, she might still be alive.

If I were you, I would have accepted their terms.

委婉前提句

1.偶然候假定的状况其实不用前提从句暗示出来，而是经由过程介词短语来暗示。

如 Without air(If there were no air), there would be no living things.

But for your help (If it hadn’t been for your help), I couldn’t have done it.

2. 假定的前提经由过程高低文表示出来。

I would go abroad for further study but that I am poor.

I was ill that day. Otherwise I would have taken part in the party.

假造语气在名词性从句中的使用

“wish+宾语从句”暗示不成能完成的希望，汉语可译为“惋惜……、悔不应……、希望……”。暗示如今不克不及完成的希望，从句的谓语动词用已往式；

暗示未来不成能完成的希望用“would/could+动词本相”；

暗示已往不成能完成的希望时用“had+已往分词”。如：

I wish I were better-looking. 如果我长得再标致些就行了。

I wish I had met the film star just now. 我如果方才碰到那位影戏明星该多好啊！

I wish I would be a solider. 我想当一位甲士。

假造语气在状语从句中的使用

1. if only的前提状语从句中的假造语气

if only 与 I wish一样，也用于暗示与究竟相反的希望，厥后所接假造语气的时态与 wish 后所接时态的状况不异。如：

If only the player had had more courage! 这位选手再多有一些勇气就行了。

If only Daisy would go with me! 黛茜如果情愿和我一同去就行了!