Unit 5 Power of Ideas Section A Grammar Focus 课件 2026-2027学年人教版英语九年级上册

UNIT5PowerofIdeasPassivevoiceinthesimplepresentandpasttenses能够归纳并总结一般现在时和一般过去时被动语态的结构特征、表意功能及用法。能够正确使用一般现在时和一般过去时的被动语态谈论与发明创造主题相关的内容，如介绍发明功能、描述发明历史、说明发明应用等。能够在语篇语境下正确使用一般现在时和一般过去时的被动语态结构建构语义、表达思想。语态是动词的一种形式，它表示句子的主语和谓语动词之间的关系。语态通常分为主动语态和被动语态。Thetelephonewasinvented

byAlexanderBellin1876.AlexanderBellinventedthetelephonein1876.主语是动作的发出者主语是动作的承受者主动语态被动语态Readthesentences.Circletheverbsinthepassivevoice.Amini-cameraisconnectedtothefrontoftheglasses.Theoilandsaltarealsoaddedbythemachineitself.Toys,chairs,tables,andevenhousescanallbemadebythe3Dprinter.AradiomessagewassentacrosstheAtlanticOceanforthefirsttimein1901.被动语态句子有两类：1.带施事者：含by的短语； 2.不带施事者：不含by短语。被动语态由“be动词+过去分词”构成。be动词有人称、数和时态的变化。使用场景Situation1:不知道或不需要说出动作的执行者时。我的自行车修好了。(谁修的不重要。)这本书被许多人阅读。(强调“这本书”很受欢迎。)Mybikeisrepaired.Thisbookisread

bymanypeople.Situation2:强调动作的承受者。4.Theseradiosarestillusedbyoldpeople.3.Manynewinventionsareusedinourdailylives.1.Iamoftenaskedaboutmyfavoriteinvention.房间每天都被打扫。许多新发明被应用在我们的日常生活中。2.Theroomiscleanedeveryday.我经常被问到我最喜欢的发明是什么。这些收音机仍然被老人们使用。主语am/is/are动词的过去分词一般现在时的被动语态结构1.肯定句:

主语+am/is/are+动词的过去分词(+by+动作执行者).这些角色被全世界的人们喜爱。这份工作并不总被大多数人理解。Thecharactersareloved

bypeopleallovertheworld.Thisjobis

notalwaysunderstoodbymostpeople.句式2.否定句:

主语+am/is/are+not+动词的过去分词(+by+动作执行者).3.一般疑问句:Am/Is/Are+主语+动词的过去分词(+by+动作执行者)?这些动画角色被孩子们熟知吗？这部经典动画在哪里放映？Aretheseanimatedcharactersknown

bychildren?Whereisthisclassicanimationshown?4.

特殊疑问句:疑问词+am/is/are(+主语)+动词的过去分词(+by+动作执行者)?主动语态变被动语态主动语态

Mymotherwaters

theflowers

everymorning.被动语态第1步：主动语态的宾语变成被动语态的主语(代词要用主格)。Theflowersarewatered第2步：主动语态的谓语动词变成“am/is/are+动词的过去分词”形式。bymymother第3步：主动语态的主语变成“by+动作执行者”放在主谓结构后面(有时可省略)。everymorning.第4步：其他成分抄下来。主语宾语谓语宾语主语谓语3.Theclassroomwascleanedbyusafterschoolyesterday.4.PipeswereusedtokeepthegroundhardwhenbuildingtheQinghai-XizangRailway.2.Manynewinventionsweredevelopedbecauseoftheradio.1.Thefirst3Dprinterwascreatedinthe1980s.许多新发明都因无线电的出现而被研发出来。教室是我们昨天放学后打扫的。第一台3D打印机是在20世纪80年代被发明的。修建青藏铁路时，管道被用来保持地面坚硬。主语was/were动词的过去分词一般过去时的被动语态结构肯定句:主语+was/were+动词过去分词(+by+

动作执行者).Iwaspraised

bytheteacher.2.否定句:主语+was/were+not+动词过去分词(+by+动作执行者).Thewindowswerenotbroken

byhim.我被老师表扬了。窗户不是被他打破的。句式3.一般疑问句:

Was/Were+主语+动词过去分词(+by+动作执行者)?—Wasyourhomeworkfinishedyesterday?—Yes,itwas./No,itwasn't.

特殊疑问句:疑问词+was/were+主语+动词过去分词(+by+动作执行者)?—Whenwasthecompanyfounded?—Twoyearsago.—你昨天完成作业了吗？—是的，完成了。/不，没有完成。—这家公司是什么时候成立的？—两年前。1.Ourhomework

mustbefinishedontime.

我们的作业必须按时完成。2.Itcan

be

used

everywhere.它可以在各处被使用。3.Theinvention

shouldberespected.这项发明应该被尊重。主语+情态动词+be+过去分词(+bysb.)含情态动词的被动语态结构Completethesentenceswiththecorrectformsoftheverbsinbrackets.1.Thetelephone_____________(invent)byAlexanderBellin1876.2.Peopleallovertheworld____________(connect)toeachotherthroughtheinternet.3.Theword“robot”_____________(introduce)forthefirsttimeinaplayin1920.wasinventedareconnectedwasintroduced4.Itwasn’tsupposedtomakesuchaloudnoisewhenthebutton____________(press)tostartthemachine.5.Itisbelievedthattheworld’soldestwheel_____________(find)inEasternEurope.waspressedwasfoundCompletethepassagewiththecorrectformsoftheverbsinbrackets.MakeaprofileoftheQinghai-XizangRailway.TheQinghai–XizangRailwaywascompletedin2006.It__________(connect)XiningtoLhasa,ahugedistanceof1,956kilometres,anditisthehighestrailwayintheworld,reaching5,072metresabovesealevelatTanggulaPass.Thebuildingoftherailwaywasagreatchallenge.Creativeideas__________(need)tosolvedifferentproblems.Insummer,thetoplayerofthefrozengroundwouldmeltandbecometoosofttobuildon,sopipes__________(use)tokeepthegroundhard.connectswereneededwereusedHowever,insomeplaces,itwasimpossibletobuildtherailwayoverthefrozenground,sotunnelshadto__________(create)instead.Insomeotherplaces,bridges__________(build)tokeeptherailwayupabovetheground.Thesebridgesareanimal-friendlyand__________(allow)animalstopassunderthetracks.Asanimportantandsuccessfulproject,therailwayhas__________(increase)tourismandeconomicdevelopmentinthearea.Thelessonslearntandexperiencegainedfrombuildingthisrailwaywillhelp__________(improve)transportinothersimilarplacesintheworld.

becreated

werebuilt

allow

increased(to)improveⅠ.根据语境及提示词语补全句子，每空词数不限。1.Theoldbuildingsinthistown____________(check)forsafetyeverySeptember.2.Who____________(choose)astheleadactorintheEnglishdramayesterday?3.Whichlanguage____________________(most,commonly,use)bypeopleininternationalbusinessmeetings?arecheckedwaschosenismostcommonlyused4.Thesportsmeeting________________