2015-2016学年高中英语 Unit4 Learning efficiently Grammar课件 新人教版选修10.ppt

1、Unit 4 learning efficiently，grammar，1。if I were Andy Lou，I would be in hong kong now . 2 . I wish I were a millionaire . 3 . we suggest that every one should help The AIDS patients . when to use tatas假设法在条件语句中表示1)“发生的可能性较小的情况”，条件子句一般使用时，主子句使用would do，should do或might/could，假设语气要注意的几个茄子点3360，2)表示“可能发生

2、但没有发生的事情”，条件子句在过去完成时If I frightened those birds，they might fly off and I would never see them again . if I were you，I would accept the offer。If I were asked to define my mood，id say“bored”。if he had taken his doctors advice，he might not have died so soon。if He had He would have run away while there

3、was still time . if she had not married，she could have become special in the filed .2.虚拟语气在条件语句中也可以用来表示“以后发生的可能性较小的情况”。条件子句可以是should do、were to do或常规科举，主子句可以是would do、should do、could/might do .使用，e . The sports meet would have to be put off . I could see The surface of The moon with my own eyes if I

4、 were to go The moon some day . what would you do iie . g . if there should be another flood，what shall we do？ask her to leave a message if she should come。3 .在正式英语样式中，如果if子句中的第一个动词是should、were或had，则可以将牙齿动词放在句子开头，而不是if。e. g. were it all true，it would still not excuse their actions。had the captain be

5、en more careful，His ship would not have sunk . should any visitors come，I would say you are not here .4 .if only和suppose(supposing)；E.g. if only I had more time，I could go there to help them . supposing it were fine tomorrow，would you go climbing the mountain win，5。If it were not/had not been for也是常

6、见的虚拟文章模式，意思是“否”。E.g. if it had not been for your help，We would not have achieved so much in our work，if it were not for the wise decision，We could not be line，6 .在I wish中使用的宾语从句中，表示现在的时间，动词使用一般科举时间和科举进行(be动词使用were /was)。表示科举时间，动词使用科举完成时间和科举完成进度。表示未来时间，动词使用would/could等动词原形。e . g . I wish I knew how t

7、o operate this computer . I wish he werent so lazy . I do wish everything would be as quiet as before . I wish Ing overtime yestes:其中I wish表示与if only相似的含义。上面的句子都可以用if only代替I wish。e . g . if only I knew how to operate this computer . if only we had nt been working overtime yesterday.7.its (about/hhE

8、.g. it is high time we began to work。weve enjoyed the evening，but its time we went home。its about time the boy learned to behave 8。在“要求，建议，命令”等动词demand，require，suggest，insist，advise，order等后面加上宾语时，子句谓语动词一般用虚拟语气，即should动词原形，e。we suggest that the meeting(should)not be post poned . the uning Move raised

9、 by 20%。常用动词是： ask(要求)、advise(建议)、command(命令)、decide(决定)、demand(要求)，如果牙齿动词是要求，e.g. He insisted that I was wrong。(其中insist表示“坚持”)the expression on her face suggest that she knows the secret.虚拟语气除了在条件语句中表示与未来、现在和科举事实相反的情况外，还要注意以下几点：1、混杂的时间条件语句条件子句表示的行为和订单表示的行为发生的时间不一致时，动词的形式应根据它表示的时间进行调整。e . g . if yo

10、u had taken the medicine yesterday，you might be well now。(条件语句与科举事实相反，而主句与当前事实相反。)如果你昨天吃药了，你的病今天可能会好起来。如果省略，2，if的条件语句if条件语句中有were，had，should，则可以省略if，并赋予were，had，should以置于前面。这种结构主要用于章鱼。e . g . wereit necessary(=if it were necessary)，I might resign如果需要，可以辞职。had you informed me earlier(=if you had info

11、rmed me earlier)，I wouldnt have signed the contract。如果你早告诉我，我就不会签那份合同了。三，隐含条件句部分句子不包含条件句，但意义类似于包含条件句的句子。这种句子叫做含蓄条件，这种句子也使用家庭语气。含蓄条件语句的“暗示”的意义一般用三种茄子方法来表达。1 .条件包含在短语中。E.g. withoutair，there would be no living things。没有空气就没有生命。(条件隐含在介词Google Without air中)，but for your help，I couldnt have made so much p

12、rogress。没有你的帮助，我不可能取得这么大的进步。(条件包含在介词短语But for your help中)，this same thing，happening in wartime，would result in disaster。如果同样的事情发生在战时，会引起大祸。(条件包含在分词短语happy ning in wartime中)，2 .条件蕴涵在语境中。E.g. You might stay here forever。你可以永远在这里。They would have succeeded。他们本来会成功的。(可能暗示if they had kept trying)，3 .在很多情况

13、下，虚拟已经成为习惯说，很难找到隐含的条件。E.g. I wouldnt have dreamed of it。这是我做梦也没想到的。4.省略主句的非真实条件句非真实条件句。省略主句，通常表示无法实现的愿望。牙齿条件语句通常由if only引导。e . g . if only I had known where to find you just now。我希望你刚才知道我要找你的地方。，1 .complete the sentences with the verbs in brackets in appropriate form of the subjunctive mood .1)we sh

14、ould act as though he _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ us。(watch)，were watching，2)the rules require that two people _ _ _ _ present at all times。(be)3)if I _ _ _ _ _ _ in charge，Id do things differently。(be)4)I wish I _ _ _ _ faster at typing than I am。(be)，be，were，WWE 5)if only you _ _ _ _ _ _ _ John as well as I do。(know) 6) I in sist that you _ _ _ quiet。(be)It is necessary that you _ _ _ _ your safety belt on at all times。(keep)，knew，be，keep，8)imagine what it would be like if we _ _ _ _ wings。(have)9)she suggested that we all _ _