人教版 (2019)必修 第二册Unit 3 The internet图文ppt课件

这是一份人教版 (2019)必修 第二册Unit 3 The internet图文ppt课件，共26页。PPT课件主要包含了现在完成时的被动语态，强调结果桥已修好，Lark Park等内容，欢迎下载使用。
Our teaching building has been putint use(投入使用) since 2012.
The Olympic Games have been hsted successfully by China.
The clthes have been washed.
The dr has been lcked.
The vase has been brken.
一、意义：现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响, 其构成是: have/has been + dne。
1.现在完成时被动语态肯定句句型：主语+ have / has been +过去分词 Her mtrbike has been stlen. 2.现在完成时被动语态否定句句型：主语+ have/has +nt+ been+过去分词The task has nt been finished yet. Many skilled wrkers have nt been trained in the cmpany.
The present perfect passive vice(肯定句、否定句:
3.现在完成时被动语态一般疑问句句型：Have/Has +主语 + been+ 过去分词 a new cmputer been bught ? Have they been sent abrad t study English?4.现在完成时被动 语态特殊疑问句句型：疑问词+ have /has + 主语+ been+过去分词 has the car been repaired?Hw many buildings have been built in this schl?
The present perfect passive vice(疑问句）:
Wrkers have built the huse since tw years ag.
since tw years ag.
has been built
把下列句子变为被动句：
1. We have received many letters since last week.
Many letters have been received since last week.
2. My friend has bught a new persnal cmputer. A new persnal cmputer has been bught by my friend.3. The shp has repaired my cmputer very quickly. My cmputer has been repaired by the shp very quickly.
1. 副词的位置ften, usually, always, never, hardly, seldm等副词置于have/has和been中间。如:[误] Such a man has been hardly believed.[正] Such a man has hardly been believed.
2. 并不是所有动词都有被动语态 happen, take place, break ut, belng t, cst, last等不及物动词或词组无被动语态。如：[误] Great changes have been taken place in China since 1978.[正] Great changes have taken place in China since 1978.
3. 现在完成时的被动语态与一般过去时的被动语态的区别。
The bridge was built last year.The bridge has been built.
动作发生在过去，未知结果
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. 一些特殊动词, 如brrw, finish, begin, buy, start, return, marry, pen, jin等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思， 则需改换动词或时态。如：
My brther has had(不能用has bught) this bike fr almst fur years.Hw lng has this bk been bught?Hw lng ag was this bk bught?
不知道或没有必要说明动作的执行者是谁。如: Sme new cmputers were stlen last night. 一些新电脑在昨晚被盗了。(不知道电脑是谁偷的)This bk was published in 1981.这本书出版于1981年。
(没有必要说明书是谁写的)
1. A persnal cmputer has bught by us. A persnal cmputer has been bught by us.2. Many prblems has been fund with ur new cmputer. Many prblems have been fund with ur new cmputer.
3. A PC has been builded the way we wanted. A PC has been built the way we wanted.4. Our cmputer just has been jined t the internet. Our cmputer has just been jined t the internet.
Let's enjy sme pictures abut the changes f ur hmetwn
New hspital
SINJ bus statin