表示过去情况的虚拟语气复习课程.doc

表示过去情况的虚拟语气

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过去虚拟语气
和陈述语气的过去式相同，但动词be 要用were形式
表示过去情况的虚拟条件句
1. 表示过去情况的虚拟条件句动词形式可以下表表示
条件从句中的谓语
主句谓语
相当于过去完成时的形式had done
Would have +过去分词
这类句子表示与事实相反的情况或实现可能性不大的情况
If I had known you were coming, I would have met you at the airport.(但是我不知道)
If anything had happened, he would have left us know.
在主句中，如果主语是第一人称，也有人用should构成谓语。
I should (would) have talked to mother if I had thought of it.
I should (would) never have done it, if hadn’t been so hard up.
2. 主句也可以用could和might构成谓语
If my father had lived, he could have done all this for me.
有时可以用should（应当）构成谓语
If he had received the present, he should have thanked her.

例题:
—If he __________，he __________ that food.
—Luckily he was sent to the hospital immediately.
A. was warned，would not take                B. had been warned，would not have taken
C. would be warned，had not taken           D. would have been warned，had not taken
此题应选 B。该题考查与过去事实相反的虚拟语气：此时条件从句的谓语用 had+过去分词，主句的谓语用 would(should，could，might)+have+过去分词
1. If she had worked harder，she __________.
A. would succeed                                      B. had succeeded
C. should succeed                                     D. would have succeeded
2. If my lawyer ________ here last Saturday，he _________ me from going.
A. had been; would have prevented              B. had been; would prevent
C. were; would                                          D. were; would have prevented 
3. I didn’t see your sister at the meeting. If she __________，she would have met my brother.
A. has come                                             B. did come 
C. came                                                   D. had come
4. You didn’t let me drive. If we ________ in turn，you__________ so tired.
A. drove; didn’t get                                  B. drove; wouldn’t get
C. were driving; wouldn’t get                    D. had driven; wouldn’t have got

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