Unit 3 Discovering Useful Structures ppt课件-2022新人教版（2019）《高中英语》必修第二册.pptx

1、Unit 3 TheUnit 3 The InternetInternetGrammar 被动语态复习被动语态复习一、什么是语态？一、什么是语态？语态是英语动词的一种表现形式，用来说明语态是英语动词的一种表现形式，用来说明_和和_之间的关系。之间的关系。二、语态的种类：二、语态的种类：_和和_主语主语谓语动词谓语动词主动主动被动被动挑事儿：挑事儿：If you think youre such a tough guy,then hit me.(I dare)You hit me!Come and help me!I was hit/beaten.复习被动语态的构成：复习被动语态的构成：(五种时

2、态的被动语态）五种时态的被动语态）时态时态主动态主动态被动态被动态一般现在时一般现在时 一般过去时一般过去时 一般将来时一般将来时 现在完成时现在完成时 现在进行时现在进行时 am/is/are donedo/doesdidwas/were donewill dowill be donehave/has donehave/has been doneam/is/are doingam/is/are being done 现在完成时的被动语态现在完成时的被动语态1.Much has been written about the wonders of the World Wide Web.Obser

3、ve and translate the following sentences,and try to find something in common from these sentences.2.Peoples lives have been changed by online communities and social networks.3.Many people have been helped by the club.已经被书写已经被书写已经被改变已经被改变have/has been done 已经被做已经被做表示表示“某人某人/某事某事/某物已经被某物已经被”已经被帮助已经被帮助

4、has been written have been changedhave been helped 问题导学问题导学1(1)点拨精讲点拨精讲1(3)Observe and translate the following sentences,and find the differences among“have/has done”and“have/has been done”.have/has donehave/has been done 主语和动作之间是主语和动作之间是主动主动关系关系主语和动作之间是主语和动作之间是被动被动关系关系1.A woman has started a small

5、online company with two friends.1.A small online company has been started by a woman with two friends.2.The internet has made our lives more convenient.2.Our lives has been made more convenient by the Internet.已经开始已经开始已经被开始已经被开始已经使已经使已经被使已经被使has started has been startedhas made has been madeVerb for

6、mActivePassivehave/has+been+v-edHow do we form the present perfect passive voice?Fill in the blank.have/has+v-ed_n.电池电池vt.确认；使确信确认；使确信 1.I have downloaded the software to help my phone battery last longer.2.Someone has lost an identity card.3.Have you confirmed the Wi-Fi password?The software has be

7、en downloaded to help my phone battery last longer.An identity card has been lost.Has the Wi-Fi password been confirmed?4.Have you pressed the button yet to copy the file?5.Has anyone made a comment about the online database?Has the button been pressed yet to copy the file?Has a/any comment been mad

8、e about the online database?n.文件文件,档案档案现在完成时的被动语态意义及结构现在完成时的被动语态意义及结构表示动作发生在过去表示动作发生在过去,到现在已经完成或对现在产生到现在已经完成或对现在产生的影响。动词和被修饰主语构成被动关系。的影响。动词和被修饰主语构成被动关系。肯定式：肯定式：have/has+been+v-ed否定式：否定式：have/has+not+been+v-ed一般疑问句：一般疑问句：Have/Has+主语主语+been+v-ed?特殊疑问句：特殊疑问句：疑问词疑问词+have/has+been+v-ed?问题导学问题导学2(4)The le

9、tter (post)already.Observe the following sentences and try to fill in the blanks.has been posted Many houses (build)for the poor so far.have been built点拨精讲点拨精讲2(4)用法用法1:被动动作发生在过去被动动作发生在过去,已经完成已经完成,对现在造成影响对现在造成影响 或产生结果。或产生结果。(already,yet,so far,by now)问题导学问题导学2(4)The machine (repair)for two hours but

10、 it still doesnt work.has been repaired Paper money (use)for over 50 years.has been used点拨精讲点拨精讲2(4)用法用法2:被动动作发生在过去被动动作发生在过去,持续到现在持续到现在,并有可能继续并有可能继续 持续下去。持续下去。(for+一段时间一段时间;since)Everyone will feel extremely delighted if he_(admit)to Sun Yat-sen University.You shouldnt leave school before your homew

11、ork_(finish).has been admittedhas been finished用法用法3:在时间在时间/条件状语从句中表示可能条件状语从句中表示可能 还没有发生的被动动作。还没有发生的被动动作。Key points:请认准以下常与现在完成时连用的时间状语请认准以下常与现在完成时连用的时间状语1.已经已经（常用在肯定句）（常用在肯定句）_2.已经已经 （疑问、否定句）（疑问、否定句）_3.最近最近 _4.从那时起从那时起 _5.自那以来自那以来_6.曾经曾经 _7.迄今为止迄今为止_8.到现在为止到现在为止_9.很长一段时间很长一段时间_10.在最近几年里在最近几年里_11.在过

12、去的几年里在过去的几年里_12.在过去的三十年里在过去的三十年里_alreadyrecently/latelysince thenyetever sinceever 常用常用“have ever”so far；up to nowby nowfor a long(period of)timein recent yearsin/during/over the past yearsin/during/over the three decades 判断正误:*He has died for 3 years.（）*He died 3 years ago.（）VX判断正误:*The patient has

13、 been taken good care.（）*The patient has been taken good care of.（）VX带复合宾语的动词变被动语态时,只能将宾语变为主语,原来的宾补保留不动,改成主语补足语。主动:I have asked her to help you.被动:She has been asked to help you.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，一般将间接宾语变为被动语态的主语，若将直接宾语

14、变为被动语态的主语时，间接宾语前面要用相应的介词。主动主动:I have given him the key.被动被动:He has been given the key.被动被动:The key has been given to him.判断正误:*Some of the best conversations have ever happened around the dinner table.（）*Some of the best conversations have been happened around the dinner table.（）VX1.The machine has

15、been repaired already.2.The machine is being repaired now.3.The machine was repaired yesterday.说明动作发生在过去说明动作发生在过去,对现在有影响对现在有影响,“现在修好了现在修好了”说明动作正在进行说明动作正在进行只说明动作发生在过去只说明动作发生在过去Underline the use of the present perfect passive voice in the following poem.Then fill in the chart below.Look at the way you

16、r face has been washedLook at the way your teeth have been brushedLook at the way your shoes have been cleanedYoud better do them again.Look at the way the flowers have been plantedLook at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here again.Things

17、 that have been done wellThings that have been done badlythe way the flowers have been plantedthe way the grass has been cutthe way the paths have been sweptthe way your face has been washedthe way your teeth have been brushedthe way your shoes have been cleanedRead the poem again.Think of your own

18、situation and write a similar one.Look at the way your face has been washedLook at the way your teeth have been brushedLook at the way your shoes have been cleaned Youd better do them again.Look at the way the flowers have been plantedLook at the way the grass has been cutLook at the way the paths h

19、ave been sweptI hope that youll come here again.Look at the way _Listen to the way _Look at the way _the picture has been paintedthe song has been writtenthe film has been madeNow think about what you could create.Look at the way _Look at the way _Look at the way _the elderly have been helpedthe riv

20、er has been cleanedthe trees have been plantedNow think how to make the world a better place.为弘扬中华优秀传统文化，你校于上周举办了有关中国古典音乐的音乐节。假定你是李华，请你为校英语报写一篇报道，内容包括：1.活动时间、地点及参加人员；2.活动内容；3.活动反响。注意：1.词数100左右；2.可以适当增加细节，以使行文连贯。搭建结构搭建结构三段式三段式 Para1：（导语）（导语）Para2：（正文）（正文）Para3：(结束语结束语)Why、What、When、Where、Who活动具体表现（细节

21、），重点写活动反响及评价aims（见材料）1)In order to improve.2)To make more students learn more about3)In memory of 4)To provide a good chance for students to do5)In order to let students have a better understanding of6)In order raise ones awareness of7)In order that we will attach importance to.8)relieve/release gre

22、at pressure from.9)enrich our school life10)strengthen our friendship1.Tired as we were,we found it.to take part in.2.We had a better understanding of.through the activity.3.Looking back,I really appreciate the activity,for it not only.but also.4.This activity turned out to be a huge success.Not onl

23、y did it.but also it.5.Thanks to the activity,we not only.but also.6.We attached more importance to.after taking.7.The activity is of great importance,which provides us with a chance to.8.This is really an unforgettable and rewarding activity,which made a deep impression on everyone.feelings1.feelin

24、gs:exhausted but excited,delighted,relaxed,competitive2.activities:interesting,meaningful,rewarding,successful,beneficial,unforgettable,heartwarming3.what I got:friendship,teamwork,relaxation,fun Last week,our school held a Chinese classical music festival in the concert hall to promote Chinese trad

25、itional culture.All the students participated in it.During the festival,we appreciated the amazing classics played by Chinese classical instruments,such as erhu and Chinese zither,among which High Mountain and Flowing Water drew the most attention.Besides,some talented students from different clubs

26、put on a variety of performances,such as singing,dancing and drama shows,which definitely gave us a feast for our eyes and ears.Also,what interested the students most was that an opportunity was provided to learn some instruments from some distinguished experts.The festival turned out to be a success.Having participated in it,we all realized that we should be responsible for inheriting and popularizing our traditional culture.