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20页。PPT课件主要包含了were held　，has，has not，kept，are sold，made，was，were sold，was bought，is enjoyed等内容，欢迎下载使用。

Lk at the pictures and fill in the blanks.
were praised　
has been used
The Internet has greatly imprved Jan’s life.Peple have written much abut the wnders f the Wrld Wide Web.
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Read the pairs f sentences. Underline and cmpare the different verb frms.
Jan’s life has been greatly imprved by the Internet.Much has been written abut the wnders f the Wrld Wide Web.
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Answer the fllwing questin and fill in the blank.
• Hw d we frm the present perfect passive vice?
have/has been + v-ed
Cmplete the sentences with the present perfect r the present perfect passive vice.
1. Nearly 500,000 high-quality digital phtgraphs _____________________ (prduce) since the internatinal prject started in 1994. 2. The Getty Museum in Ls Angeles 　　 even ____________(reprduce) a cpy f the caves and paintings fr peple t admire in America. 3. Many peple ___________________(help) by the club. 4. The statues fill nly ne part f the emperr’s huge tmb, which still ________cmpletely _______________(nt unearth). 5. Wrkers build shelters fr survivrs whse hmes __________________ (destry).
have been prduced　
have been helped
been unearthed　
have been destryed
Change the sentences int the present perfect passive vice.
EXAMPLEThey’ve built a kind f new PC with mre functins.→A kind f new PC has been built with mre functins.
The sftware has been dwnladed t help my phne battery last lnger.
An identity card has been lst.
Has the Wi-Fi passwrd been cnfirmed?
EXAMPLEThey’ve built a kind f new PC with mre functins.→A kind f new PC has been built with mre functins.
Has the buttn been pressed yet t cpy the file?
Has a cmment been made abut the nline database?
Find ut the differences in meaning and functin between the active and passive frms.
As we can see in the pairs f sentences, 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 t an 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 actin is unknwn, nt imprtant, r preferred nt named.
Brainstrm and discuss hw the present perfect passive vice is used.
Study the grammar.
The present perfect passive vice现在完成时的被动语态 现在完成时的被动语态的含义： 现在完成时的被动语态强调一个发生在过去的被动动作，它有三层意思。 1. 动作已完成，强调对现在造成的影响或结果。 2. 动作一直持续到现在。 3. 主语和谓语动词之间为被动关系。
现在完成时的被动语态的用法 1. 用于不知道动作的执行者是谁时。 2. 用于动作的执行者是泛指或不言自明时。 3. 用于可以说出动作的执行者，但动作的承受者是谈话中心或特别需要强调时。 4. 用于动作的执行者不是人时。 5. 用于出于礼貌、委婉而避免提及自己或对方时。
现在完成时的被动语态的各种句式: 1. 肯定式：主语+have/has+been+dne(及物动词的过去分词)(+其他). 2. 否定式：主语+have/has+nt+been+dne(及物动词的过去分词) (+其他). 3. 一般疑问式： Have/Has+主语+been+dne(及物动词的过去分词)(+其他)? 4. 特殊疑问式：特殊疑问词+have/has+(主语)+been+dne(及物动词的过去分词)(+其他)? Has yur cmputer been repaired? 你的电脑修好了吗? Hw many man-made satellites have been sent up in ur cuntry since last year? 从去年以来，我国有多少人造卫星被发射了?
现在完成时的主动语态变被动语态: 1. 只带有一个宾语的动词变为被动语态时，将主动语态的宾语变为被动语态的主语。 We have built many huses in the past ten years. (主动) →Many huses have been built in the past ten years. (被动) 2. 带有双宾语的动词，如give、send、bring、take、teach、shw、tell、make、sing、write、read、sell、buy、pay、lend、pass、prmise 等，变为被动语态时，可将其中一个宾语变为主语，另一个保留不动。 We have given him a bk. (主动)→He has been given a bk. (被动)→A bk has been given t him. (被动)
现在完成时的主动语态变被动语态: 3. 带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾语补足语变为主语补足语，原来省略t的不定式作宾语补足语，被动语态中要用带t的不定式。I have fund him lying n the flr. (主动)→He has been fund lying n the flr. (被动)
Fill in the blanks with the crrect frms f the verbs in brackets.
has been made
have been prduced
have been used
will be drunk
was invented
Wrk in grups. Each grup explains the uses f the present perfect passive vice.