英语：UNIT3 GRAMMAR1课件（牛津版选修6）.ppt

1、高二英语Module 6 Unit 3Grammar 1Unreal conditionals虚拟语气1.条件从句和主句中的虚拟语气时间从句主句与现在事实相反If+主语+动词的过去式(be-were)主语+should/would/could/might+动词原形与过去事实相反If+主语+had+过去分词主语+should/would/could/might+have+过去分词与将来事实相反If+主语+were to/(should)+动词原形主语+should/would/could/might+动词原形当从句的if省略时,从句要倒装:If I were you,I would not do

2、 that.Were I you,I would not do that.在if I/he/she/it 之后,可用were代替was。两者在意义上没有区别,但是were更为正式,特别是在称述心存怀疑的事情时:If she were ready,we would go.在与将来事实相反的条件从句中,我们可以用 were to 或 should+do来表示:If I were to fail/should fail my English test,I would have to take it again at the end of the term.If he should come/were

3、 to cometomorrow,I would talk to him about it.Read the dialogue at page 40 and fill in each blank with the correct form of the verb in brackets.If I should meet her,I would tell her.=Should I meet her,I would tell her.If I were in your position,I would do it better.虚拟条件句中的省略与倒装=Were I in your positi

4、on,I would do it better.If they had made preparations,they would have succeeded.=Had they made preparations,they would have succeeded.有时非真实条件句中,主句谓语动词所表示的动作和条件从句中谓语动词所表示的动作并不同时发生.这时动词的形式并不完全按照上述表格来进行,而需要按照各自的时间来调整,这样的句子就叫错综时间条件句。错综时间条件句If you had followed the doctors advice,then you would be all rig

5、ht now.If I hadnt finished my composition by now,I would be working on it tomorrow.If she had prepared well for her lessons yesterday,she wouldnt have so many difficulties now.有时一个假设的情况并不用条件从句表示,而用其它方式来表示,这样的句子叫含蓄条件句。1.用with,without等介词短语或分词短语或者独立主格结构来代替条件从句。含蓄条件句We might have died without your help.

6、=We might have died if you hadnt helped us.Having known in time,we could have stopped it.=If wed known in time,we could stopped it.在条件从句中除最常见的连词之外,还有下列连词:otherwise;in case;but for;on condition that;unless;suppose/supposing(that);so long as;provided/providing(that)2.用相当于if的其他连词表示虚拟结构I was busy last w

7、eek,otherwise I would have come to see you.I would have come to see you but I was busy last week.If I hadnt been busy last week I would have come to see you.I would have called you,but I _ your telephone number.I forgot your telephone number,otherwise/or _.If I hadnt forgotten your telephone number,

8、_.I would have called youI would have called youforgotI would have given you more money,_ I was poor then.I was poor then,_ I would have given you more money._ I hadnt been poor,I would have given you more money.3.通过上下文来虚拟otherwise/orbutIfHe suggests she go at one.He suggests that she should go at o

9、nce.demand,suggest,advise,propose,insist,order,request,desire,urge,deserve,recommend,intend,etc.He suggests that she go at once.It is suggested that she go at once.His suggestion is that she go at once.He made a suggestion she go at once.宾语从句主语从句表语从句同位语从句It is+important/necessary+that 从句It is import

10、ant(that)you(should)have a map.Its necessary(that)she(should)talk to themanager.固定句式的虚拟语气,从句中用过去式的(从句中,如果表示与现在事实相反,谓语动词用过去式;如果表示与过去事实相反,谓语动词用过去完成式。)as if,as though,wish,would rather,if only,etc.Its high(about)time+从句时,从句谓语动词只能用过去式。1._ for the free tickets,I would not have gone to the films so often.

11、2.A.If it is not B.Were it not3.C.Had it not been D.If they were not2.He came late,otherwise he _ the first bus.A.caught B.would catch C.would have caught D.had caughtCC3.Mary was going to the wedding if her friend _ her.A.hadnt called on B.didnt call at C.didnt call on D.hadnt called at4.-Lets stop

12、 watching the boring TV programme,Jack!-If you dont watch it,I _,either.A.dont B.wont C.am not D.stopAB5.-Shall I tell John about the bad news?-No,you _.I think that will make him sad.A.neednt B.wouldnt C.shouldnt D.mustnt6.Why did you throw the bottle out of the window?You _ somebody.A.might hurt B

13、.could have hurt C.would hurt D.must have hurt CB7.From what I hear about their hotel and the weather,they _ their holiday very much.A.would have enjoyed B.shouldnt have enjoyed C.neednt have enjoyed D.cant have enjoyed D8.-Did you hear me come in last night?-No,I _ asleep.A.cant be B.must be C.must

14、 have been D.couldnt have beenC9.-Ill pay you by cheque monthly.-Id rather you _ me cash weekly.A.pay B.will pay C.are to pay D.paid10.The doctor said,“Sir,you _ be sitting in this waiting room.Its for the children only.”A.oughtnt to B.cant C.mustnt D.wontDA11.I would have informed her if possible,but I _ so busy.A.were B.had been C.was D.would beCHomework for todayFinish Parts C1 and C2 on Page 118 in Workbook.