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1、LOGOIf I were a boy I think I could understand How it feels to love a girl I swear Id be a better man. If I were a boy Beyonce LOGOIf 引导的虚拟语气引导的虚拟语气永康丽州高级中学永康丽州高级中学 郑燕华郑燕华LOGOcontents IfIf引导的条件状语从句分类引导的条件状语从句分类IfIf引导的虚拟语气时态特征引导的虚拟语气时态特征省略省略ifif的虚拟语气的倒装的虚拟语气的倒装LOGOIf 引导的状语从句分类引导的状语从句分类v虚拟语气是表示一种不能实现的
2、假设。虚拟语气是表示一种不能实现的假设。Q:Whats the difference between the two sentences?If I am free, I will visit you.If I were a boy ，I think I could understand 真真实条件实条件句：假设的情况发生性很大句：假设的情况发生性很大 虚拟条虚拟条件件句：假设的情况不太可能发生句：假设的情况不太可能发生1LOGO过去过去20132013过去的过去过去的过去20122012现在现在 20142014将来将来 20152015从句时态从句时态: : 针对过去进行虚拟针对过去进行虚拟
3、与过去事与过去事实相反实相反时态后退一步时态后退一步had donediddo(be) to doshall doIf 引导虚拟语气时态特征引导虚拟语气时态特征2LOGO过去过去20132013过去的过去过去的过去20122012现在现在 20142014将来将来 20152015从句时态从句时态: : 一一. . 针对过去的情况进行虚拟针对过去的情况进行虚拟had donediddo(be) to doshall do时间时间If If 条件句条件句主主 句句过去过去had donewould / could / might / should +have doneLOGO过去过去201320
4、13过去的过去过去的过去20122012现在现在 20142014将来将来 20152015从句时态从句时态: : 针对现在进行虚拟针对现在进行虚拟与现在事与现在事实相反实相反时态后退一步时态后退一步had donediddo(be) to doshall doLOGO过去过去20132013过去的过去过去的过去20122012现在现在 20142014将来将来 20152015从句时态从句时态: : 二二. . 针对现在的情况进行虚拟针对现在的情况进行虚拟had donediddo(be) to doshall do时间时间If If 条件句条件句主主 句句现在现在didwould / co
5、uld / might / should +LOGO过去过去20132013过去的过去过去的过去20122012现在现在 20142014将来将来 20152015从句时态从句时态: : 针对将来进行虚拟针对将来进行虚拟与将来事与将来事实相反实相反过去将来时过去将来时had donediddo(is/am/are) to doshall dois/am/are to dois/am/are to do时态后退时态后退 were to do were to do shall do shall do should do should do did didLOGO过去过去20132013过去的过去过
6、去的过去20122012现在现在 20142014将来将来 20152015从句时态从句时态: : 二二. . 针针对对将来将来的的情况进行虚拟情况进行虚拟had donediddo(be) to doshall do时间时间If If 条件句条件句主主 句句将来将来were to doshould dodidwould / could / might / should +LOGOPractice : 判断下列句子是对什么时候的情况的虚拟判断下列句子是对什么时候的情况的虚拟12If I were a bird, I could fly in the sky.34If you had taken
7、 my advice, you would not have failed.If it were to rain tomorrow, the meeting would be put off. If it should break down within the first year, we would repair it.LOGO_for my illness, I would have lent him a helping handA）Not beingB）Had it not beenC）Without beingD）Not having beenLOGO省略省略if if的虚拟语气的倒
8、装的虚拟语气的倒装如果条件状语中有were, had, should时, 可将were / should / had置句首，省略if3如果我是你，我会再试一次。If I were you, I would try it again.Were I you, 如果他昨天在那儿的话，他就会看那部电影了 If he had been there yesterday, he would have seen the film.Had he been there yesterday, 如果明天下雪，我们就不出去了。If it should snow tomorrow, we wouldnt go out.S
9、hould it snow tomorrow, LOGOPractice : 选出正确答案选出正确答案 3. _the exam, he would have attended a college.A. If he passed B. Had he passedC. Were he passed D. If he should pass1._five minutes earlier, you could have seen them off.A. If you should arrive B. If you arriveC. Had you arrived D. Should you arrive2Were it not for the snowy weather, we _ all right.A. would be B. would have been C. were D. may be PracticeLOGO