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1、Section Grammar虚拟语气虚拟语气() 语 境 自 主 领 悟 先观察原句后自主感悟 1.If I were you，I should try my best to go to college. 2.Were I you，I should try my best to go to college. 3.If he had gone to the party last night， everything would have changed. 4.Had he gone to the party last night， everything would have changed. 5
2、.If it were to be sunny tomorrow，we would go out for a picnic. 6.Were it to be sunny tomorrow， we would go out for a picnic. 1.1、2 句表示与现在事实相反的假设。 2.3、4 句表示与过去事实相反的假设。 3.5、6 句表示与将来事实相反的假设。 4.句 1、2、3、4、5、6 句的句意分别相 同吗？相同。 5.句 2、4、6 共同的特点是：省略 if 后 的倒装句。 一、非真实(虚拟)条件句中的虚拟语气 1与现在事实相反 条件从句主句 did(be 多用 were，
3、非正式文体中也可用 was) would/should/could/might动 词原形 If I were you，I should accept the job. 如果我是你，我会接受这份工作。 If I had time，I would go there. 如果我有空，我就去那儿。 2与过去事实相反 条件从句主句 had donewould/should/could/mighthave done If you had come earlier，you could/would have met the star. 如果你早点来，你就会见到那位明星了。 If he had seen you
4、yesterday，he would have returned you your book. 如果他昨天见到你，他就会还给你书的。 3与将来事实相反 条件从句主句 did/should do/ were to do would/should/could/might动词原形 If his flight should be delayed/were to be delayed/were delayed，we would fail to meet him. 万一他的航班被延误了，我们就接不到他了。 If these icebergs should melt at the same time，we
5、would drown. 如果这些冰山同时融化的话，我们就都淹死了。 即时训练 1 用所给词的适当形式填空 The waiter would serve you more quickly if you spoke (speak)to him more politely. Do you think he would lend (lend)me his computer if I asked (ask)him nicely? If they really wanted (want) to see the house now，I would have (have)to get the permiss
6、ion of the owner. 二、非真实(虚拟)条件句的倒装 if 虚拟条件句中有 were， had， should 时， 可把 if 省略， 而把 were， had， should 放在主语前，构成倒装结构。 Were I you(If I were you)，I would take the job. 如果我是你，我就会做那份工作。 Had I had time(If I had had time)，I would have gone and helped him. 如果我有时间，我就会帮助他了。 Should he come(If he should come)，tell hi
7、m to ring me up. 万一他来，告诉他给我打电话。 名师点津 若虚拟条件句为否定句，否定词 not 不提前。 Had I not been ill that day，I would have taken part in the parade. 如果那天没生病，我会去参加集会的。 即时训练 2 句型转换 If I were at school again，I would study harder. Were I at school again，I would study harder. If you had come earlier，you would catch the bus.
8、Had you come earlier，you would catch the bus. If he had come here yesterday，he would have seen his old friend. Had he come here yesterday，he would have seen his old friend. 名师点津 If it werent for./If it hadnt been for.相当于 but for.，意为“多亏了，要 不是” 。 If it hadnt been for your advice，I should have failed.
9、But for your advice，I should have failed. 要不是你的忠告，我会失败的。 .单句语法填空 1If she had been at school，I would have seen (see) her. 2I would let (let) you go to work now if it werent raining so hard. 3Had (have) it not been for the free ticket，I would not have gone to see the film. 4If I had had her phone numb
10、er，I would have got (get) in touch with her. 5Were (be) I you，I would buy a new car. 6If it were to rain/should rain/rained (rain) tomorrow，the meeting would be put off. 7If I was/were (be) in charge，Id do things differently. 8Would she tell us the truth if we asked (ask) her? 9What would have happe
11、ned (happen) had Bob walked farther，as far as the river bank? 10But for the storm，we would have had (have) a pleasant journey，but had to turn back halfway. .单句改错(每小题仅有 1 处错误) 1If you took my advice，you would not have failed in the exams. tookhad taken 2If I was you，Id start looking for another job. waswere 3If it hadnt been for his help，I wouldnt succeed. succeedhave succeeded 4If you asked her yesterday，you would have known what to do then. asked 前加 had 5If it snowed tomorrow，I wont go there. wontwouldnt/snowedsnows