Book6U3课件课时5Grammarandusage

1、( (模块六模块六 高二上学期高二上学期) )grammar and usage板块：板块：grammar教学设计教学设计课件课件作者：丁荷花作者：丁荷花unreal conditionals课件描述：课件描述： 本课件通过文字、本课件通过文字、表格和图画表格和图画对对虚拟语气规则的讲解，使得复杂的虚拟语气规则的讲解，使得复杂的语法通俗明了，浅显易懂；还配上语法通俗明了，浅显易懂；还配上相应的练习加以巩固。相应的练习加以巩固。1. 一般条件句中虚拟语气的用法。一般条件句中虚拟语气的用法。2. 一般条件句中虚拟语气的倒装。一般条件句中虚拟语气的倒装。3. 其他一些基本用法。其他一些基本用法。 一

2、般条件句中虚拟语气的用法一般条件句中虚拟语气的用法find out the sentences of unreal conditional mentioned in reading. if you had joined the chat room ten minutes ago, you would have known what we were talking about. if i got married in the uk, i would expect a present. if i got married in italy, i would have to give a presen

3、t. should you come to brunei, you would have to take off your shoes before going into someones house.1. state a present condition or situation eg. if i were you, i would ask my parents for help. if i had the chance, i might want to be a translator. 一般条件句中虚拟语气的用法一般条件句中虚拟语气的用法unreal present conditiona

4、ls:if were/did , would do 1. 假如我有更多的时间，我就会学习汉语。 if i had more time, i would study chinese.2. 要不是她这么忙要不是她这么忙,她就会出席今天下午的会议她就会出席今天下午的会议了。了。if she were not so busy, she would attend the meeting this afternoon.practice: tips: 1) would, could and might are often interchangeable, but with some difference i

5、n meaning. would intention; plan could ability; possibility might probability 2) in written english or in formal situation, we usually use were in if-clauses in place of was. however, in everyday conversation, was is often used.what would you do if you won the lottery?if i won the lottery, i would 2

6、. refer to an imaginary past action.e.g. unreal past conditionals :if had been/done , would/could/might have done 1) 如果他抓紧时间，他本来能赶上那趟火车。如果他抓紧时间，他本来能赶上那趟火车。 if he had hurried, he could have caught the train.2) 如果你昨天告诉他，他也许会提些建议了。如果你昨天告诉他，他也许会提些建议了。 if you had told him yesterday, he might have made so

7、me suggestions.3. unreal future conditionals.e.g.3. unreal future conditionals :if were/did/should/were to , would/should/might do e.g.1) 假如我要出国，我就会去中国。假如我要出国，我就会去中国。 2) 万一明天下雨，我们的运动会就推迟。万一明天下雨，我们的运动会就推迟。 表示与事实情况相反表示与事实情况相反 条件从句的谓语形式条件从句的谓语形式主句的谓语形式主句的谓语形式 表示与表示与现在事实现在事实情情况相反况相反(present)表示与表示与过去事实过去

8、事实情情况相反况相反(past)(past)表示与表示与将来事实将来事实情情况相反况相反(future)(future)过去式过去式(did/were)(be常用常用 were)过去式过去式(did)/(were)should + do were to do过去完成式过去完成式(had +done)would/could / might/should + dowould/could/ might/should +have donewould/could/ might/should + do虚拟语气在条件从句中虚拟语气在条件从句中we can also put should, were and

9、had at the beginning of an unreal conditional sentence. in this case, if is not needed any more.1) if you should make a mistake, you should not be embarrassed. should you make a mistake, you should not be embarrassed.条件句中虚拟语气的倒装条件句中虚拟语气的倒装2 ) if you had told me earlier, i would not have this problem

10、 now.had you told me earlier, i would not have this problem now.3) if you were to take the train, you would be there much sooner. were you to take the train, you would be there much sooner.注意注意: 如果省略的条件句中的谓语如果省略的条件句中的谓语动词是否定形式时动词是否定形式时,不能用动词的不能用动词的缩略形式缩略形式. _ she _ yesterday, she would meet the famo

11、us singer today.a. hadnt; left b. had; not leftc. if; didnt leave d. didnt; leave tipsb. had; not leftpractice fill in the blanks with the verbs given in the brackets in their proper forms.1. you didnt let me drive. if we (drive) in turn, you (not get) so tired.2. _it _(not be) for your help, i coul

12、dnt have made any progress.3. has mr. smith recovered now? yes. who (think) that such a serious illness could be cured?4. _it _(rain) tomorrow, the match would be called off.had driven wouldnt have got hadnot beenwould have thoughtwereto rain5. most of the students felt rather disappointed at the english party. they said that it (organize) better.6. jean doesnt want to work right away because she thinks that if (get) a job, she probably wouldnt be able to see her friends very often.7. much labour would have been saved if