虚拟语气系统复习.pptx

2.与过去事实相反的假设。if从句 主句had+p.p.would(mightcould should)have+p.p.Eg.If she had worked harder,she would have succeeded.The rice would not have been burnt if you had been more careful.第1页/共14页3.表示对将来情况的主观推测（可能相反或可能性很小）if从句 主句didwere were+to do would(mightcould should)+v.should+do Eg.If you succeeded should succeed were to succeed,everything would be all right.第2页/共14页混合条件句（混合虚拟语气）主句与从句的动作发生在不同的时间，这时主、从句谓语动词的虚拟语气形式因时间不同而不同，这叫做混合条件句。例如：If you had asked him yesterday,you would know what to do now.（从句与过去事实相反，主句与现在事实相反。）If it had rained last night(过去),it would be very cold today(现在).第3页/共14页虚拟条件句的倒装 虚拟条件句的从句部分如果含有were,should,或had,可将if省略，再把were,should或had 移到从句句首，实行倒装。_ to do the work,I should do it some other day.A.If were I B.I were C.Were I D.Was I C第4页/共14页Were they here now,they could help us.=If they were here now,they could help us.Had you come earlier,you would have met him.=If you had come earlier,you would have met him.Should it rain,the crops would be saved.=Were it to rain,the crops would be saved.第5页/共14页特殊的虚拟语气词：should 1）It is necessary/a pity+that结构中的主语从句的谓语动词要用should 加动词原形，should 可省略。（注：常为表情绪、观点的形容词或名词，如:necessary.important.impossible.natural.strange.surprising,funny.right.wrong.better.a pity等。）Eg.It is necessary that he(should)come to our meeting tomorrow.第6页/共14页2）在宾语从句中的应用在表示命令、建议、要求等一类动词后面的从句中。【注：一想要(desire)一宁愿(prefer)二命令(mand)三建议(advise.suggest.propose)五要求(demand.require.request.desire.insist)中】。无论主句谓语动词为何种时态，从句的谓语动词都用：“（should）+动词原形”。Eg.I suggest that we(should)hold a meeting next week.He insisted that he(should)be sent there.如果suggest,insist不表示建议 或坚持要某人做某事时，即它们用于其本意暗示、表明、坚持认为时，宾语从句用陈述语气。第7页/共14页在表语从句，同位语从句中的应用在suggestion,proposal,idea,plan,order,advice等名词后面的表语从句、同位语从句中要用虚拟语气，即（should）+动词原形.My idea is that we(should)get more people to attend the conference.I make a proposal that we(should)hold a meetingnext week.第8页/共14页wish的用法 1.表示与现在事实相反的愿望，谓语动词用过去式eg.I wish I had your brains.我希望我有你那样的头脑。(事实：我根本比不上你)2.表示过去事实相反的愿望，谓语动词：had+p.p.eg.I wish I had known the truth of the matter.我希望我原来知道这件事的真相。（事实：原来不知道）3.表示将来难以实现的愿望,谓语动词：should/would+动词原形eg.I wish I should have a chance again.我希望我还能有一次这样的机会。（事实：很难再有这样的机会了）(注：if only、would rather、It is(high)time that、as if/as though也有类似用法）第9页/共14页2009年高考真题1.This printer is of good quality.If it _ break down within the first year,we would repair it at our expense.（天津卷，15）A.would B.should C.could D.might2.But for the help of my English teacher,I _ the first prize in the English Writing Competition.（福建卷，35）A.would not win B.would not have won C.would win D.would have won 3.But for their help,we _ the program in time.（安徽卷，34）A.can not finish B.will not finish C.had not finish D.could not have finished第10页/共14页Practice1.It is required that the students _ mobile phones in their school,so seldom _ them using one.A.not use;will you see B.should not use;you will see C.dont use;will you see D.not use;you will see2.How I wish I _ my mouth before I shouted at my mum.A.shut B.have shut C.had shut D.would shut 3.The boy insisted that he _ his best and _ praised.A.had tried;must be B.tried;must be C.try;should be D.had tried;be 4.Johns pale face suggested that he _ ill,and his parents suggested that he _ a medical examination.A.be;should be B.was;have C.should be;had D.was;has 5.It was recommended that passengers _ smoke during the flight.A.not B.need not C.could not D.would not第11页/共14页1.Even if he _(be)here,he couldnt solve the problem.2.Without air,there _(be)no living things.3.But for your help,I_ (not do)it.4.If only I _(take)his advice,but I didnt.5.I was very busy yesterday,otherwise I _(come)to the meeting.werewould becouldnt have done had takenwould have come第12页/共14页1.If she hadnt trained so hard,she _(not,be)able to run so fast today.2.They _(want)to help but couldnt get here in time.3.I _(be going to)travel by train but then we decided to go by air.wouldnt behad wanted was going to第13页/共14页感谢您的观看！第14页/共14页