Unit 2 Poems Section Ⅲ Grammar- 虚拟语气（2）语法图解探究发现①If you had come earlier, youwould not have missed the exciting scene in the movie.②If you had toldme the news yesterday, I wouldn't be so worried now.③Had I leftsooner, I would havebeen there on time.④But for your advice, Iwould have failed.⑤He treats the little girl as if she were his own daughter.⑥It's high time that we began the work.⑦It's necessary that we (should) learn English well.⑧If only Ihad not beenbusy last week.[我的发现](1)在表示与过去事实相反的虚拟语气时，条件句的谓语动词用“had ＋过去分词 ”形式表示，而主句谓语动词则用“would/should/might/could＋have＋过去分词”表示。(如例句①)(2)当条件句的谓语中有 had, were 或 should 时，可将 if 省略，同时将 had, were 或should 提到从句主语的前面，形成倒装。(如例句③)(3)当主从句所指的时间不一致时，其谓语动词应分别根据自己的具体情况采用适当的形式。(如例句②)(4)有时某些介词短语、副词或上下文可以表示虚拟条件，这种虚拟语气叫含蓄条件句。(如例句④)(5)as if 引导的从句所表达的内容不是事实时，其谓语动词应用虚拟语气。(如例句⑤)(6)虚拟语气还用于某些特殊句式 ( 结构 ) 中 。(如例句⑥、⑦和⑧)一、与过去事实相反的虚拟条件句与过去事实相反的虚拟条件句中，从句的谓语动词为 had＋过去分词；主句的谓语动词为 would/should/could/might＋have＋过去分词。If the weather had been nice yesterday, we would have gonefor a picnic.如果昨天天气好的话，我们就去野餐了。If you had come earlier, you could have caught the bus.假如你早来一点的话，你就有可能赶上公共汽车了。[名师点津] (1)在与过去事实相反的虚拟语气中，可以将条件句中的 if 省略，把助动词 had 提前。If I had worked hard, I would have surely succeeded.→Had I worked hard, I would have surely succeeded.如果我当时努力学习的话，我肯定会成功。(2)句型“Had it not been for ...”意为“当时要不是……”。Had it not been for your timely help, we would have been lost in the ...
