高中人教版 (2019)Unit 3 The internet课前预习课件ppt

这是一份高中人教版 (2019)Unit 3 The internet课前预习课件ppt，共21页。PPT课件主要包含了Revision ，was held，since，already，for，just，yet，machine，replace，been等内容，欢迎下载使用。
1 help helped helped
V原形 过去式 过去分词
2 change changed changed
3 simplify simplified simplified
4 plan planned planned beg begged begged stp stpped stpped 5 begin began begun
动词的过去式和过去分词规则：1 +ede+d辅音字母+y ，改y为i+ed 重读闭音节，末尾只有一个辅音字母，双写辅音字母+ed5不规则动词的过去式和过去分词

Nw English is spken by mre and mre peple all ver the wrd1 一般现在时(simple present tense )的被动语态： S+am/is /are(nt) + dne (过去分词)The sprts meeting in ur schl last year.2一般过去时(simple past tense) 的被动语态： S+was/were(nt) + dne (过去分词)
复习各时态（tense)的被动语态(passive vice)：
A new park will be built in ur city next year.
3一般将来时(future tense)的被动语态：
S+will(nt) be + dne
S+am/is/are(nt) ging t be dne
Observe & Summarize
1) Over time I have been changed quite a lt.2) I have been used in ffices and hmes since the 1970s. 3) I never frget anything I have been tld.4) Since the 1970s many new applicatins have been fund fr me.5) I have als been put int rbts. 6) I have even been put int space rckets.
现在完成时的被动语态：the present perfect passive vice S+have/has(nt) been +dneHave/Has+S+been dne
We shuld use the Present Perfect Passive Vice in the tw cases:
_______________________________.2)_______________________________.
发生在过去但对现在有影响的被动动作
发生在过去,持续到现在的被动动作.常与 _____ , _______ , _______ , _______ , _______等时间状语连用
1. The dr has been lcked.2. The huse has been built fr tw years. The huse was built in 2015.
Wrkers have built the huse since tw years ag.
since tw years ag.
Exercise 1: Change the sentences int the present perfect passive vice改写句子
has been built
We have received many letters since last week.
Many letters have been received since last week.
The buildings, destry, typhn
The buildings have been destryed by the typhn.
Exercise 2: Make up sentences using present perfect passive vice串词成句
The machine has been replaced by the cmputer .
JJ Mall, set up , in ur city, 2014
JJ Mall has been set up in ur city since 2014.
new bridge, build , in ur city
A new bridge has been built in ur city
many trees , plant,Hakka culture park
Many trees have been planted in Hakka culture park.
1. A persnal cmputer has bught by us. 2. Many prblems has been fund with ur new cmputer.3. The child has been taken gd care by Grandma all these years.4. The bk has been bught fr tw days.
Exercise3:crrect mistakes单句改错
【2011天津卷】 In the last few years thusands f films (prduce) all ver the wrld.【2012湖南卷】In the near future,mre advances in the rbt technlgy (make)by scientists.
have been prduced
will be made
1 现在完成时的被动语态have /has(nt) been +dne 2 一般现在时的被动语态：am/is /are(nt) + dne 3一般过去时 的被动语态：was/were(nt) + dne 4 一般将来时的被动语态Will(nt) be + dneam/is/are(nt) ging t be dne
What has been dne t make the city mre beautiful and attractive (吸引人的）?
In rder t make ur city mre beautiful and attractive, ur gvernment and all citizens have made every effrts as fllws:1.多种树木,多种花草.2.加宽一些道路.3.更多的旅馆建起来供旅客居住.4.公共场所禁止吸烟. 5.所有的废气废水在排进空气或河里前已经进行处理.6.已经训练更多的志愿者为来自世界各地的游客提供帮助.作业A:用现在完成时的被动语态翻译以上句子
Keys fr hmewrkA:1.Mre trees and flwers have been planted.2. Sme streets in the city have been widened.3. Mre htels have been built fr the visitrs t live has been frbidden in the public waste gas and water have been treated befre ging int the air and river. 6.Mre vlunteers have been trained t help the visitrs frm all ver the wrld.