英语九年级全册Unit 6 When was it invented?Section B试讲课ppt课件

这是一份英语九年级全册Unit 6 When was it invented?Section B试讲课ppt课件，共36页。PPT课件主要包含了主动变被动解题步骤，计算机，Ⅰ 填空等内容，欢迎下载使用。
一般过去时的被动语态表示过去某一时刻发生的被动性动作, 其基本结构为： 主语+ was / were + 过去分词+ by ...►The teacher was visited by them tw years ag. 他们两年前看过这位老师。
1. 找宾语 ——即动作的承受者
2. 判断宾语的单复数 ——即be动词的单复数
3. 判断动词的时态 ——即be动词的时态
4. 修改谓语的时态 ——即原句动词改为过去分词
5. 修改原句的主语 ——即by + 主语/ 宾语
be要随着主语变 逻辑主语by来引
►1. Tm brke the windw.   The windw was brken by Tm.►2. He brke the windws.  The windws were brken by him.
Inventins are everywhere in ur life
3a Think f smething that yu d nt like t d. Then think f an inventin that culd help yu. Make ntes.
• Prblem: __________________________ New inventin: __________________ What it is used fr: __________________
quickly taking ntes in class
a special pen
taking ntes quickly
3b Imagine yu are a business persn. Write a descriptin f yur new inventin. Try t sell the inventin t the class.
This special pen was invented by Liu Jie. It has three clrs and is used fr…
This special pen was invented by Liu Jie. It has three clrs and is used fr taking ntes quickly. It is very useful if yu have a lt t write dwn. The pen cmes with a micrchip that can stre a list f cmmn wrds that yu will use. Yu can prgram the wrds yu will use ften int the micrchip’s
Sample writing
memry, then assign a shrt frm t each wrd. When yu are writing, yu just need t write the shrt frms with the pen, press a buttn n the pen and the shrt frms will change int the actual wrds. The micrchip can cntain up t 50 wrds and yu can make changes t the list f wrds whenever yu need t.
As yu pur in yur ht drink, the clr changes.
Clr changing cup
Smart and creative inventins
Yu can never chp yur fingers ff anymre.
It’s then safe fr yung children t eat them.
switch plug (断路插头) 2012年， 富超穎 (中国)
scter carriage (滑板婴儿车) 2007年， Valentin Vdev (奥地利)
计算机在我们的生活、工作中的作用越来越大，你知道计算机的起源与发展吗？请结合计算机的发明时间(1946年）、外形、用途等方面,谈一下它的发展变化，并说明你对未来计算机的畅想。要求：1.意思连贯,语句通顺;词数不少于80。 Cmputer____________________________________________________________________________________________________________________________________
这是一篇事物介绍类的说明文，根据题目提示可考虑采用下面的模板。
... imprtant in ur daily life.
时间:The cmputer was invented in ... 外形：... was huge.用途:send sme messages ... pen ...
I think cmputers are ging t ...
Cmputer Cmputers are becming mre and mre imprtant in ur daily life. D yu knw when the cmputer was invented ? The cmputer was invented in 1946. At that time , it was huge. With the develpment f science and technlgy, the cmputer has grwn smaller. Nw there are many kinds f cmputers, such as persnal cmputers and laptps. The cmputer is a very useful tl in ur life.
Fr example , it can send sme messages t freign friends by e-mail. What’s mre , it can share infrmatin with thers thrugh the Wrld Wide Web. We can als listen t music r play the game n cmputers. It makes us relax. It’s hard t imagine what ur life wuld be likewithut cmputers. I think cmputers will be mre cnvenient and they are ging t change ur life cmpletely in the near future.
1.Cmplete the passage with the crrect frm f the wrds in the bx.
invent dubt mentin website all f a sudden
It is ften difficult t decide n the inventr f certain inventins. This is because smetimes a few peple may ______ things which are nearly the same. It’s hard t tell wh came up with the idea first.
Sme inventins can als lead t ther inventins ______________. S sme peple _________ whether the inventr came up with the idea himself r herself. They think that the inventr used smene else’s idea t create his r her inventin. That is why bks r ________ usually _________ mre than ne inventr when giving infrmatin abut inventins.
all f a sudden
2. Rewrite these sentences using the passive vice.
1. Smene stle my watch.2. They used five eggs t make this big cake.3. When did they invent the persnal cmputer?4. They asked us nt t run in the hallway.5. Smene tk the vide back t the stre.
Check answers
My watch was stlen (by smene).
Five eggs were used t make this big cake.
When was the persnal cmputer invented?
We were asked nt t run in the hallway.
The vide was taken back t the stre (by smene).
3. Find ut infrmatin abut an inventin yu wuld like t knw mre abut and write sentences belw.
Inventin:When:Wh:Purpse:
The first paper __________ (make) in China in 105 AD.Fr ver 500 years the art f making paper __________ (limit) t China.In 610, papermaking ______________ (intrduce) int Japan.Kites ___________ (knw) in China abut 3,000 years ag.
was limited
was intrduced
5. Wheelbarrws ____________ (invent) in the Han Dynasty.6. Gunpwder _______________ (discver) by the Chinese hundreds f years ag.7. Sccer _____________ (develp) in England in the 12th century.
were invented
was discvered
was develped
II. 按要求改写下列各句。
1. We planted these trees in 1997. (改成被动语态)____________________________________2. He made a cake yesterday. (改成被动语态)____________________________________
These trees were planted (by us) in 1997.
A cake was made by him yesterday.
3. The teacher gave the students sme advice. (改成被动语态)____________________________________________________4. He was seen t read a bk in his rm. (用I作主语, 改为主动语态)____________________________________________________5. She was helped by all the peple.(改成一般疑问句)_______________________________________________
Sme advice was given t the students by the teacher.
I saw him read a bk in his rm.
Was she helped by all the peple?
Ⅲ. 完成句子。1. 在200多个国家中，超过一亿人打(篮球)，包括中国。_______ _______ _______ by _______ _______ 100 millin peple in ver 200 cuntries including China. 2. 篮球是由加拿大一位叫詹姆斯·奈史密斯的博士发明的。Basketball _______ __________ _______ a Canadian dctr named James Naismith.
3. 人们认为，历史上的首次篮球赛是在1891年12月21日 举行的。_______ ____ _________ that n December 21st, 1891, the first basketball game in histry was played. 4.从那时起，篮球在世界各地的普及程度得到提升。Since then, the ppularity f basketball _______ _______ wrldwide.
Ⅳ.用所给词的适当形式填空。
1. Nw cmputers are widely used in ur ______ (day) lives.2. He mentined _________ (hear) frm her sup is very _______ (salt) because my mther put lts f _____ (salt) n it.4. Since then, the ___________ ( ppular ) f basketball has risen quickly.5. I have wrked here fr _______(near) tw years.
— Lk, what an ld bridge! It lks s special!— Yeah, it ______ nearly 500 years ag. A. was building B. was built C. has built
将近500年前修建的，用一般过去时的被动语态。
Write an article abut yur favurite inventin.D sme exercises abut passive vice.Prepare fr a test.