高中英语新教材必修三Unit3The-world-of-science-Using-language课件

单击此处编辑母版标题样式,编辑母版文本样式,第二级,第三级,第四级,第五级,2020/12/27,#,Present perfect passive,Using language,Present perfect passiveUsing,1,现在完成时的被动语态,Present perfect passive,现在完成时的被动语态强调一个发生在过去的被动性动作持续到现在或对现在造成的影响或结果。,一，构成,have/has+been+done,The door has already been locked.,The children havent been told the good news yet.,Has his new novel been translated into English yet?,How long has the house been built?,现在完成时的被动语态The door has already,2,二，现在完成时的被动语态的主要用法,1,表示过去发生的动作对现在造成的影响与结果，着重指现在的情况。当动词为结束性动词时，可与,already,yet,连用，但不能与,for,或,since,引导的表示一段时间的状语连用。,The work has already been completed.,2,表示一个被动的动作或状态开始于过去，持续到现在，并有可能持续下去时，常与,for,或,since,引导的时间状语连用，或用于,How long,句型中。,My car has been repaired for two day.,The house has been painted since the family moved out.,3,用在时间或条件等状语从句中，表示将来某时已完成的动作，即用现在完成时的被动语态代替将来完成时的被动语态。,You can go home as soon as your task has been finished.,三，常与现在完成时连用的时间状语,already,yet,recently/lately,since then,ever since,so far,ever,for a long time,by now,in recent years,in/during/over the past/last(few)years,二，现在完成时的被动语态的主要用法,3,四，应注意的问题,1,注意现在完成时的被动语态的两个助动词，即,have/has,和,been,两者缺一不可。,2,注意与一般过去时的被动语态的区别。一般过去时的被动语态所表示的动作或状态与现在情况没有关系，而现在完成时的被动语态则强调与现在情况的联系。,This novel was finished last year.,This novel has been finished.,3,非延续性动词在现在完成时的被动语态中的运用。,非延续性动词，如,borrow,finish,begin,start,buy,marry,open,join,等构成的现在完成时的被动语态不与,for,或,since,连用。,How long has this book been bought?,How long ago was this book bought?,但这类动词的否定式可表示动作的持续过程，具有连续性，因而可与,since,或,for,引导的时间状语连用。,No books have been bought since last week.,高中英语新教材必修三Unit3The-world-of-science-Using-language课件,4,4,动词短语是一个不可分割的整体，在被动结构中要保持完整性，不可省略动词短语中的介词或副词。,The orphan has been,looked after,by his neighbours.,The problem has been,paid enough attention to,.,5,带有双宾语的动词，如,give,send,bring,take,teach,show,tell,make,sing,write,read,sell,buy,pay,lend,pass,promise,等，变为被动语态时，一般将直接宾语或间接宾语变为被动语态的主语，若将直接宾语变为被动语态的主语时，间接宾语前面要用相应的介词。,The company has given him a chance to work abroad recently.,He has been given a chance to work abroad recently(by the company).,A chance to work abroad has been given,to,him recently(by the company).,4 动词短语是一个不可分割的整体，在被动结构中要保持完整性，,5,1 Great changes_(take place)in my village since 2012.,2 More patients _(treat)in hospital this year than last year.,3 _ the photo_(develop)yet?If not,youd better get it ready as soon as possible.,4-Are you going to the party?,-No,I _(not invite)yet.,5 More than a dozen students in that school_(send,）,to study medicine last year.,6 More than 5000 used bikes _(collect)since the two brothers set up the organisation.,have taken place,have been treated,Has been developed,have not been invited,were sent,have been collected,直击高考,1 Great changes_,6,7 Every possible means _(try)to stop the bad behavior,but they dont work at all.,8 Over the past ten year,this town _(hit)twice by earthquakes.,9-Will the lecture be held at 4 oclock this afternoon?,-No,it _(put off)till tomorrow.,10-What happened to the postman?,-I dont know.He _(not see)around,here for a long time.,has been tried,has been hit,has been put off,hasnt been seen,7 Every possible means _,7,Look at the sentences from the reading passage and answer the questions.,a,I guess you have been asked about the title of your book before.,b,New inventions like 3D printers have been used to make replacement hearts and bone parts.,1.What has happened to“you”in sentence(a),2.Who has used new inventions to make replacement hearts and bone parts in sentence(b)?,Look at the sentences from the,8,Group A,a,I guess you,have been asked,about the title of your book before.,b,New inventions like 3D printers,have been used,to make replacement hearts and bone parts.,Group,B,c,I guess someone,has asked,you about the title of your book before.,d,People,have used,new inventions like 3D printers to make replacement hearts and bone parts.,Compare the following sentences and answer the questions.,What is the difference between the two groups of sentences?,Why does the author choose to use the passive form instead of the active form in the reading passage?,Group ACompare the following s,9,Rewrite the underlined parts using the present perfect passive.,Within the next 80 years,our lives may be changed beyond recognition by 3D printing.,It has already,affected many things in our lives,right down to the food we eat.For instance,some restaurants in London,have served 3D-printed hamburgers to customers.,But perhaps the most significant success that people,have achieved to date is in medicine.They have made,human body parts,including a beating heart,with 3D,printing technology.,And it is not just humans who are benefiting in Brazil,people have given a new,3D-printed shell to a turtle injured in a forest fire!,Rewrite the underlined p,10,It has already affected many things in our lives,Many things in our lives have already been affected.,some restaurants in London have served 3D-printed hamburgers to customers.,3D-printed hamburgers have been served to customers in some restaurants in London.,It has already affected many t,11,