高中英语人教版 (2019)必修 第二册Unit 3 The internet教案配套课件ppt

这是一份高中英语人教版 (2019)必修 第二册Unit 3 The internet教案配套课件ppt，共14页。PPT课件主要包含了 2 构成， 3 注意事项，Exercises， found，have been，been put，help等内容，欢迎下载使用。
Discuss: What aspects f change in ur life des the internet bring t us?
1. Read the pairs f sentences. Underline and cmpare the different verb frms.
Jan's life has been greatly imprved by the Internet. The Internet has greatly imprved Jan's life.
Much has been written abut the wnders f the Wrld Wide Web. Peple have written much abut the wnders f the Wrld Wide Web.
Summary：the present perfect passive vice
1 定义 表示动作已经完成，强调对现在造成的影响和结 果。常与一些副词连用，如already, ever,never, recently，lastly, just,yet等，通常把副词放在助动 词have或 has的后面，有时候也可以放在句末。 表示一直持续到现在的动作或状态。经常与fr a time,since,hw lng,s far等表示一段时间的时 间状语连用。 * The child has bee taken care f by gandma all these years. 这些年来，孩子一直由奶奶照看。
例2：Have they been sent abrad t study Eng-lish? 他们已经被派往国外学英语了吗? 例3：Wh has been invented? 谁受到了邀请？
陈述句 主语+has/ have been（nt）+P.P.+...
例1：Her mtrbike has been stlen. 她的摩托车盗了。
一般疑问句 Has/have+主语+been+P.P.+
特殊疑问句 特殊疑问词+have/has +been +P.P.+
①由finish, buy, start, begin, pst, return, brrw,marry, pen等词构成的现在完成时的被动语态,不能与表示段时间的状语，如fr fur days, hw lng等连用，而要改换动词或者是时态。判断正误:* Hw lng has this bk been bught? ( ) * Hw lng ag was this bk bught? ( )②短语动词不能分割，而且不能省略短语动词中的介词或副词。判断正误:*The patient has been taken gd care. ( ) *The patient has been taken gd care f. ( )
③并不是所有的动词都有被动语态。如happen, ccur,take place, break ut, belng t, cst, last 等不及物动词或词组，就没有被动语态。判断正误:* Sme f the best cnversatins have ever happened arund the dinner table. ( )* Sme f the best cnversatins happened arund the dinner table. ( )④双宾语动词变被动语态可将其中的一个宾语变为主语, 另一个保留不动。主动: I have given him the key.被动: He has been given the key.被动: The key has been given (t) him.
⑤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 t help yu. 被动: She has been asked t help yu.
主动语态中作宾语补足语的不带t的不定式，变为被动时，要加上t。例：The engineer made the rbt clean the windws f the tall building. The rbt was made t clean the windws f the tall building.
2. Change the sentences int the present perfect passive vice. EXAMPLE They've built a kind f new PC with mre functins.-- A kind f new PC has been built with mre functins. 1 I have dwnladed the sftware t help my phne battery last lnger. 2 Smene has lst an identity card. 3 Have yu cnfirmed the Wi-Fi passwrd? 4 Have yu pressed the buttn yet t cpy the file? 5 Has anyne made a cmment abut the nline database?
Answers:1 The sftware has been dwnladed t help my phne battery last lnger.2 An identity card has been lst.3 Has the Wi-Fi passwrd been cnfirmed?4 Has the buttn been pressed yet t cpy the file?5 Has a/any cmment been made abut the nline database?
Find ut the differences in meaning and functin between the active and passive frms.
The bject in an active sentence becmes the subject in a passive sentence. Bth sentence types cnvey a similar meaning, but they are slightly different. Fr example, in an active sentence, the subject is ding an actin tan bject, while in a passive sentence, the subject is having smething dne t it, and the der f that actin is nt necessarily mentined. Active sentences are used ften,as they are mre direct. Passive sentences are ften used when the der f an actinis unknwn, nt imprtant, r preferred nt named.
3. Read the pem. Then think f yur wn situatin and write a similar pem.
Lk at the way yur face has been washedLk at the way yur teeth have been brushedLk at the way yur shes have been cleanedYu'd better d them again.Lk at the way the flwers have been plantedLk at the way the grass has been cutLk at the way the paths have been sweptI hpe that yu'll cme here again.
一、 用动词正确形式填空。
1. First as a PC and then as a laptp, I____________ (use) in ffices and hmes since the 1970s. 2. Over time my memry ______________ (develp) s much that, like an elephant, I never frget anything I _______________(tld).3. Since the 1970s many new applicatins _________ ______ (find) fr me. 4. I have als ___________(put) int rbts and used t make mbile phnes as well as______ (help) with medical peratins. 5. I ____________________(put) int space rckets and sent t explre the Mn and Mars.
has develped
have been tld
have been used
have even been put
二、用将下列句子改成被动语态。1. They have finished the cnstructin f the new railway lines by nw. The cnstructin f the new railway lines has been finished by them by nw.
2. We have built a new library and a gymnasium in ur schl this year. A new library and a gymnasium have been built in ur schl this year by us.
3. The car factry has prduced a great many fine cars since the technlgical revlutin.
A great many fine cars have been prduced by the car factry since the technlgical revlutin.