第十章 虚拟语气 i.虚拟语气在条件句中的用法 主/从句 时间 条件从句 主句 过去 had十过去分词 would (should/ could/ might) have+过去分词 现在 过去式(be用were) would (should/could/ might) 十动词原形. 将来 过去式should/were to+动词原形 would (should/ could/ might) 十动词原形 1.虚拟语气用于if条件句中,主、从句的谓语动词的相应形式参见上表。 2.虚拟语气用于错综时间条件句中,主、从句动作发生的时间不一致,这时主、从句动词的 形式应根据句意或时间来调整,选用适当的虚拟形式。 3.如果条件句中包含有一个助动词情态动词、动词be或have,有时可以把if省略掉,但这时要把助动词、情态动词、动词be或have放在主语前。 4.表示“若不是"之意时，可以用如下两种句型: If it weren't for..=but for...意为“若不是(对现在情况的假设)”。 If it hadn't been for..=but for...意为“当时若不是(对过去情况的假设)”。 5.在含蓄条件句中，可以用有些介词( with, without, but for)、 连词(or, otherwise, but, however)、不定式短语、名词短语或陈述句表示虚拟的条件。 专项练习 ( ) 1. Mr. Brown_____a house if he had enough money. will buy B. would buy C. bought D. has bought ( )2.But for John,we_____the match last week. would have lost B. would lose C. had lost D. lost ( ) 3. If the child hadn't been so tired, he_____asleep so quickly. will not have fallen B. will not fall C. would not have fallen D. had not fallen ( ) 4. The Smiths_____a lovely garden if they did some work in it. will have B. would have C. have D. have had ( ) 5. If you learned to swim, you_____safer in the water. A. will feel B. felt C. would feel D. feel ( )6.It_____a good match if it A. would have been; hadn't rained B. will be; hadn't rained C. would have been; shouldn't rain D. will have been; didn't rain ( ) 7. If Mother_____you were coming, she'd have baked some cakes. has known B. will know C. had known D. would know ( ) 8. Peter_____a rich man today if he_____more careful in the past. A. is; had been B. was; were C. Will be; should be D. would be; had been ( )9.If I were to do this work,I_____it in my own way. would do B. do C. will do D. did ( ) 10. If the plane crashed, we_____. would all kill B. will all be killed C. would all have been killed D. would all be killed ( ) 11._____more carefully, she wouldn't have made so many mistakes. A. If she listened B. If she listens C. If she has listened D. Had she listened ( ) 12. If he had taken my advice, he_____a scientist now, will be B. is C. has been D. would be ( )13. _____, we would have visited the museum then. If it does not rain B. Should it not rain C. Had it not rained D. If it has not rained ( ) 14. Should it stop raining, I_____for a walk. had gone B. went C. would have gone D. would go ( ) 15. he try again, he might be successful. A. Could B. Might C, Must D. Should ( ) 16. If the teacher hadn't explained it to me, I_____ the problem so well. A. would never be understood B. had never understood C. would never have understood D. will never have understood ( ) 17. - -Why didn't you buy that dictionary - -I _____if I had had enough money. would B. would have C. have bought D. had bought ( ) ... ...
~~ 您好，已阅读到文档的结尾了 ~~
