新教材2020-2021学年高中英语外研版必修第三册课件：UNIT 3 THE WORLD OF SCIENCE PERIOD 3 .ppt

1、Unit 3 The world of sciencePeriod 3Using language语法精析课语法精讲透析【体验悟】阅读下面课文原句,回答以下问题。原句1This evening,Ill be talking to Dr.Richard Fairhurst,whose new book The New Ageof Invention has just been published.原句2I guess you have been asked about the title of your book before.原句3New inventions like 3D printers

2、 have been used to make replacement hearts and bone parts.【生成得】现在完成时的被动语态基本构成have/has+been+_的过去分词表达的意义说话的时候_的动作或出现的结果,主语是行为动作的_。当主语为第三人称单数的时候用_,其他情况用_。及物动词已经完成承受者hashave【研学析】.现在完成时的被动语态的形式1.现在完成时的被动语态的肯定式为:have/has+been+done。The experiment has been done successfully.这个实验做得很成功。2.现在完成时的被动语态的否定式为:have/

3、has+not+been+done。The important project has not been finished until now.那项重要的项目直到现在还没有完成。3.现在完成时的被动语态的一般疑问句需将have/has提到主语的前面。Has his bike been repaired?他的自行车修好了吗?4.现在完成时的被动语态的特殊疑问句为:疑问词+have/has+been+done?Who has been invited?谁受到了邀请?【内化用】This book _many languages.这本书已被译为多国语言。These flowers _,so you c

4、an go home.这些花已经被浇过水了,你可以回家了。His bikes _.他的自行车已经都卖完了。has been translated intohave been wateredhave been sold out.现在完成时的被动语态的用法1.表示动作已经完成,强调对现在造成的影响或结果,经常与一些副词连用,如already,ever,never,recently,lately,just,yet等,通常把这些副词放在助动词have或has的后面,有时候也可以放在句末。Toms novel has not been published yet.汤姆的小说还没有出版。2.表示一直持续到

5、现在的动作或状态,经常与for a time,since,how long,so far等表示一段时间的时间状语连用。The child has been taken care of by Grandma all these years.这些年来,孩子一直由奶奶照看。The friendly relations and cooperation between our two countries have been enhanced in the past few years.我们两国之间的友好合作关系在近几年得到了加强。【内化用】语法填空Enough _(say)here on this qu

6、estion.Many of the worlds greatest cities _(build)on the banks of rivers.No books _(buy)since last month.has been saidhave been builthave been bought【常温故勤总结】现在完成时的被动语态的用法1.表示被动的动作发生在说话之前(即现在的过去),强调对现在造成的影响和结果。2.表示一个被动的动作或状态开始于过去,持续到现在,并可能将持续下去,常与for或since引导的时间状语连用。课时素养达标.将下列句子改成现在完成时的被动语态1.The typho

7、on has damaged the bridge.The bridge _been damaged by the typhoon.2.They have developed some programs for the Human Resource Department of their company.Some programs for the Human Resource Department of their company _.hashave beendeveloped3.George has sent some texts and pictures to his friends ce

8、ll phone.Some texts and pictures _to Georges friends cell phone.4.They have interviewed several teachers for the job.Several teachers _for the job.5.This company has produced new types of computers.New types of computers _by this company.have been senthave been interviewedhave been produced.完成句子1.Th

9、e sports meet _until next Friday.运动会已经推迟到下周五了。2.The new bridge in Nanjing _.南京那座新建的大桥已完工了。3.Many man-made satellites _into space.许多人造卫星已经被发射到太空了。has been put offhas been completedhave been sent up4.He _such a lot since we last saw him.自从我们上一次看到他以来,他已经长大了许多。5.All the tickets _.所有的票都已售完。6.We _for you for an hour.我们等你等了一个小时了。has grownhave been sold outhave been waiting本课结束