江苏省沭阳县潼阳中学高中英语选修六教案：UNIT3 8 .doc

1、 教学案科目: 英语 主备人： 备课日期： 课 题M6 Unit 3 Grammar and usage (虚拟语气)第 8 课时计划上课日期：教学目标1. Have students know the different kind forms of unreal conditions;2. Have students grasp the usage of unreal conditions.教学重难点Have students use what they have learned to do exercises correctly.教学流程内容板书关键点拨加工润色Step1: Greetin

2、gs.Step2: 虚拟语气用于条件状语从句中时间 if 从句的谓语形式 主句的谓语形式现在 did / were would/could/should/might +V.(原)过去 had done would/could/should/might+have+p.p将来 1. did / were would/could/should/might + V 2. should do 3. were to doIf I were you, I would work hard. If he were to come here tomorrow, I would tell him.Step3:虚拟条

3、件句的特殊情况(1)混合/错综型虚拟语气 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，称为错综条件句，动词的形式要根据它所表示的时间作出相应的调整。If you had followed my advice, you would be better now.If I were you, I would have taken his advice.(2)省略if的虚拟语气如果从句中含有were/ should/ had时，则可以把这三个词置于句首，省略if.采用倒装语序。If it should happen, what would you do? Should it happ

4、en, what would you do?If he had recognized me, he would have come over.Had he recognized me, he would have come over.(3)含蓄虚拟条件句有时候假设的情况不以if引导的条件从句形式表现出来，而是通过一个介词短语，连词或其他形式表示。常用的词或短语有：without, with, but for(要是没有), otherwise, or, but等。Without your help(=If we had not had your help), we could not have

5、succeeded.But for electricity(=If there were no electricity, there would be no modern industry.He felt very tired yesterday, or/ otherwisehe would have attended the party. I was ill that day. Otherwise, I would have taken_part in the sports meet. I would have given you more help, but I was too busy。

6、 Given more time, he could have done it better. A more careful person would not have made so many mistakes .(4)在if it were( had been )not for .句型中的虚拟语气虚拟语气也常用于if it were/(had been) not for .句型中，意为要不是由于。If it were not for peace, we could not be living a happy life today.If it had not been for your ti

7、mely help, I would have gone bankrupt.Step 4:虚拟语气用在名词性从句中1.主语从句中的虚拟语气这种虚拟语气主要用在it is+形容词（名词，过去分词）+that+主语+should+动词原形（should可以省略）这种结构中。常见的这类形容词有：advisable, anxious, better, desirable, surprising, natural, necessary, strange, important, regretful.常见的这类过去分词有：decided, demanded, recommended, requested,

8、desired, required, ordered, suggested.常见的这类名词有：duty, pity, no surprise, no wonder, regret, shame.It was suggested that he（should）join the club activities.It is strange (surprising, disappointing) that she (should) not have been invited.It is a pity that he (should) refuse to accept the offer.2. 宾语从句

9、中的虚拟语气 wish 后面所跟宾语从句谓语动词用虚拟语气（意为要是，但愿就好了），其形式主要有三种：表示对现在情况的虚拟：wish后接一般过去时的从句表示对将来情况的虚拟：wish后接would，could, might+动词原形表示对过去情况的虚拟：wish后接过去完成时might/couldwould have doneI wish it were spring all year round.I wish it would be fine tomorrow.She wished she had stayed at home. 在表示建议，命令，要求等动词后的从句要用(should)+动词

10、原形。一个坚持，两个命令，三个建议，四个要求 1.insist 2. order, command 3. advise, suggest, propose,recommand) (advice, suggestion, proposal ) 4. demand , require, request, desire 此类动词有：suggest, advise, propose, demand, require, insist（要求）, order, prefer, command, ask, request.The teacher ordered that all the books (shou

11、ld) be handed in on time.当suggest表示暗示，说明之意；insist表示坚持认为，坚持说之意时，从句不用虚拟，用正常的陈述语气。The man insisted that he had never stolen the money.The smile on his face suggested that he was satisfied with life.3. 表语从句和同位语从句中的虚拟语气在表示建议，命令，要求的名词后的表语从句或同位语从句中的谓语动词要用（should）+动词原形。常见名词有：advice, desire, request, demand, proposal, suggestion, preference, requirement, order.He gave orders that the guests (should) be hospital entertained.His proposal is that we (should) get rid of the bad habits.Step5: Homework.1. Review the usage of unreal conditions.2. Do some more exercises.教学心得