高三英语一轮复习虚拟语气学案.docx

虚拟语气学案 if条件从句的谓语形式主句的谓语形式与现在事实相反If 主语did（be用were）主语should/would/could/might  do与过去事实相反If 主语had done主语should/would/could/might  have  done与将来事实相反If 主语did（be用were）             should do             were to do主语should/would/could/might  dou 虚拟3大省略+倒装句1. _ (=If it were) not for the air, we couldnt survive.2. _ (=If I had) known about it, I would have told you.3. _ (=If anyone should )call, please take a message.u 虚拟语气省略与倒装在写作中的应用its application in writing1. 人类要是早点意识到环保的重要性，他们就不会成为环境恶化的受害者了。_2. 要不是你毫无保留的帮助和无条件的支持，我的一切成就将化为灰烬._3. 如果你还有什么其他问题，不要犹豫联系我们。 _4. 如果我们早点采取措施应对工厂废水排放引发的问题，这条河流现在就不会被污染的那么严重了。_5. 要不是这次有意义的研学活动，我不会对学习的重要性有了更新更深入的了解。_u 含蓄虚拟条件句 （有假设，无if)，常用的有with，without，but for，if only, or，but；otherwise, 分词等。1. I was ill that day. Otherwise, I _part in the sports meet.2. He telephoned to inform me of your birthday, or I _ nothing about it .3. But for your help, I _succeeded.4. Without you help, I _ so much.5. I _ you more help, but I was too busy.u 几种特殊的虚拟语气1. 虚拟语气用在as if (as though)引导的从句中1) did （表现在的假设）2) had done （表过去的假设）3) would/might/could do（表将来的假设）2. 宾语从句中的虚拟语气，“wish +宾语从句” “if only +句子” 用在虚拟语气中, 表不能实现的愿望1) did / were （表“现在的假设”)2) would/could do (表“将来的假设”)3) had done （表“过去的假设”)3. Its (about/high) time 从句：It is (about/high) time that sb did/ should do Warning：should不可省！是时候呼吁学生投入适当时间来反思自己的学习问题了。_4. It/This is the first /second time that sb _It/This was the first /second time that sb _5. would rather 宁愿1) did (与现在，将来相反)2) had done （与过去相反）6. 在for fear that, in case, lest引导的从句中，若用虚拟语气时，从句谓语为：（should） + do。并且should能省略（for fear that，lest），in case不能省略。7. 在so that / in order that 所引导的目的状语从句中，从句中的谓语为：may (might)can (could) + doshould 第 3 页 共 3 页学科网（北京）股份有限公司