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虚拟语气专题
更新:2011-08-14 17:16 作者:jessica 来源:未知 点击:1 次  

A。

虚拟预期在条件句中的应用:

1: If i were you , i would make better use of time at school.

如果我是你,我会更好地利用在学校的时间。



2:If you had taken your teacher's advice ,you wouldn't have failed in the exam .

如果你早听老师的话,考试就不会不及格。



3:If it should rain ,we would change our plan.

万一下雨的话,我们就改变计划。



用法

               条件从句的谓语动词             主句的谓语动词



与现在事实相反   动词过去式                     SHOULD+动词原形

                                                 WOULD+动词原形



与过去事实相反   HAD+过去分词                  SHOULD HAVE +过去分词

                                                 WOULD HAVE +过去分词



与将来事实可能   动词过去式                     SHOULD+动词原形

相反             SHOULD+动词原形               WOULD+动词原形  

                 WERE TO+动词原形  



注、:1在主句中SHOULD 用于第一人称,WOULD 用于任何人称。

      2主句中可用COULD,MIGHT代替SHOULD WOULD。

      3条件从句中一律用WERE,在口语或非正式语句中用WAS。但“IF I WERE YOU…… ”是固定说法
 

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