【新课标】Unit 6 SectionB(3a-Self check)课件新目标九年级Unit 6 When was it invented

第第页【新课标】Unit6SectionB(3a-Selfcheck)课件（新目标九年级Unit6Whenwasitinvented)(共30张PPT)

Unit6Whenwasitinvented

SectionB（3a-Selfcheck)

Revision

一般过去时被动语态

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...

Theteacherwasvisitedbythemtwoyearsago.

他们两年前看过这位老师。

主动变被动解题步骤:

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.Tombrokethewindow.

ThewindowwasbrokenbyTom.

2.Hebrokethewindows.

Thewindowswerebrokenbyhim.

Lead-in

Inventionsareeverywhereinourlife

3a

Thinkofsomethingthatyoudonotliketodo.Thenthinkofaninventionthatcouldhelpyou.Makenotes.

Problem:__________________________

Newinvention:__________________

Whatitisusedfor:______________

quicklytakingnotesinclass

aspecialpen

Imagineyouareabusinessperson.Writeadescriptionofyournewinvention.Trytoselltheinventiontotheclass.

3b

ThisspecialpenwasinventedbyLiuJie.

Ithasthreecolorsandisusedfor…

ThisspecialpenwasinventedbyLiuJie.Ithasthreecolorsandisusedfortakingnotesquickly.Itisveryusefulifyouhavealottowritedown.Thepencomeswithamicrochipthatcanstorealistofcommonwordsthatyouwilluse.Youcanprogramthewordsyouwilluseoftenintothemicrochip’smemory,then

Samplewriting

assignashortformtoeachword.Whenyouarewriting,youjustneedtowritetheshortformswiththepen,pressabuttononthepenandtheshortformswillchangeintotheactualwords.Themicrochipcancontainupto50wordsandyoucanmakechangestothelistofwordswheneveryouneedto.

Asyoupourinyourhotdrink,thecolorchanges.

Colorchangingcup

Smartandcreativeinventions

Youcanneverchopyourfingersoffanymore.

Smartandcreativeinventions

It’sthensafeforyoungchildrentoeatthem.

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。

Computer

_______________________________________________________________________________________________________________________________________________________________

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。

计算机

引出话题

介绍发明

畅想未来

...importantinourdailylife.

时间:Thecomputerwasinvented

in...

外形：...washuge.

用途:sendsomemessages...open...

Ithinkcomputersaregoingto...

Computer

Computersarebecomingmoreandmoreimportantinourdailylife.DoyouknowwhenthecomputerwasinventedThecomputerwasinventedin1946.Atthattime,itwashuge.Withthedevelopmentofscienceandtechnology,thecomputerhasgrownsmaller.Nowtherearemanykindsofcomputers,suchaspersonalcomputersandlaptops.Thecomputerisaveryusefultoolinourlife.

【参考范文】

Forexample,itcansendsomemessagestoforeignfriendsbye-mail.What'smore,itcanshareinformationwithothersthroughtheWorldWideWeb.Wecanalsolistentomusicorplaythegameoncomputers.Itmakesusrelax.

It’shardtoimaginewhatourlifewouldbelikewithoutcomputers.Ithinkcomputerswillbemoreconvenientandtheyaregoingtochangeourlifecompletelyinthenearfuture.

Writing

现在的科技日新月异，各种高科技产品成为我们生活中不可缺少的物品，如笔记本电脑（laptop）、手机（mobilephone）、MP4、数码相机（digitalcamera）、数码摄像机（DV）等。请以“MyFavoriteInvention”为题描述一种你最喜欢的发明，并说明理由（至少两条）。80词左右。

Selfcheck

1.Completethepassagewiththecorrectformofthewordsinthebox.

inventdoubtmentionwebsiteallofasudden

Itisoftendifficulttodecideontheinventorofcertaininventions.Thisisbecausesometimesafewpeoplemay_______thingswhicharenearlythesame.It’shardtotellwhocameupwiththeideafirst.Someinventionscanalsoleadtootherinventions

invent

______________.Sosomepeople_________whethertheinventorcameupwiththeideahimselforherself.Theythinkthattheinventorusedsomeoneelse’sideatocreatehisorherinvention.Thatiswhybooksor________usually_________morethanoneinventorwhengivinginformationaboutinventions.

allofasudden

doubt

websites

mention

2.Rewritethesesentencesusingthepassivevoice.

1.Someonestolemywatch.

2.Theyusedfiveeggstomakethisbigcake.

3.Whendidtheyinventthepersonalcomputer

4.Theyaskedusnottoruninthehallway.

5.Someonetookthevideobacktothestore.

Checkanswers

1.Someonestolemywatch.

2.Theyusedfiveeggstomakethisbigcake.

3.Whendidtheyinventthepersonalcomputer

4.Theyaskedusnottoruninthehallway.

5.Someonetookthevideobacktothestore.

Mywatchwasstolen(bysomeone).

Fiveeggswereusedtomakethisbigcake.

Whenwasthepersonalcomputerinvented

Wewereaskednottoruninthehallway.

Thevideowastakenbacktothestore(bysomeone).

3.Findoutinformationaboutaninventionyouwouldliketoknowmoreaboutandwritesentencesbelow.

Invention:

When:

Who:

Purpose:

switchplug(断路插头)2023年，富超穎(中国)

scootercarriage(滑板婴儿车)2023年，ValentinVodev(奥地利)

按要求改写下列各句。

1.Weplantedthesetreesin1997.(改成被动语态)

____________________________________

2.Hemadeacakeyesterday.(改成被动语态)

____________________________________

Thesetreeswereplanted(byus)in1997.

Acakewasmadebyhimyesterday.

Exercise

3.Theteachergavethestudentssomeadvice.(改成被动语态)

_____________________________________________________

4.Hewasseentoreadabookinhisroom.(用I作主语,改为主动语态)

____