2026年新教材人教版九年级上册英语Unit 5 Power of Ideas易错知识点解析+配套练习题（含答案解析）

第第页2026年新教材人教版九年级上册英语Unit5PowerofIdeas易错知识点解析+配套练习题【单元话题】发明创造的伟大力量、思维突破与人类技术进步【语法项目】被动语态核心体系（一般现在时is/am/are+done与一般过去时was/were+done）；主被动语态互转规则；主动形式表被动意义易错点1：被动语态构造中漏用be动词或过去分词形变错误【易错点】写成ThepaperinventedinancientChina.（漏was）或Thebicycleisdrovebyhim.（分词形变错误）。【错因分析】被动语态的黄金法则是“be+done（及物动词过去分词）”，二者缺一不可。be动词承担时态和主谓单复数的体现，过去分词体现被动动作。学生常因母语无形态变化而丢掉be动词，或将过去分词与一般过去式（如drove/driven）混淆。【正误对比】

【错例】TheprintingtechnologyinventedbyBiShengintheSongDynasty.→【正例】TheprintingtechnologywasinventedbyBiShengintheSongDynasty.

【错例】Thesesmartbikesaretookgoodcareofbyvolunteers.→【正例】Thesesmartbikesaretakengoodcareofbyvolunteers.【语法规则】被动语态结构稳，be加分词合成群；be随时态人称变，过去分词切莫拼错文。易错点2：双宾语动词（give,show,send,pass,teach等）变被动语态的介词丢失【易错点】将间接宾语变主语没问题，但将直接宾语（物）变主语时，漏掉了人前面的介词to或for。【错因分析】主动句含双宾语（人+物）时，变被动有两种路径：①以“人”作主语，结构为Sb.+bedone+sth.；②以“物”作主语，结构为Sth.+bedone+to/forsb.。接to的常见动词：give,show,pass,lend,send,tell,teach,offer；接for的常见动词：buy,make,cook,choose,build。【正误对比】

【错例】Acreativeprizewasgivenhimyesterday.→【正例】Acreativeprizewasgiventohimyesterday./Hewasgivenacreativeprizeyesterday.

【错例】Awarmsweaterwasmademebymygrandma.→【正例】Awarmsweaterwasmadeformebymygrandma.【语法规则】双宾被动物作主，人前介词要补齐；give/show/send加to，make/buy/cook用for理。易错点3：动词短语变被动语态时丢落介词或副词【易错点】写成Thesickchildwaslookedafterwell（漏介词after或误当不及物）。【错因分析】动词短语（如lookafter,payattentionto,takecareof,laughat,makeuseof等）相当于一个独立的及物动词，在变为被动语态时，必须将短语看作一个不可分割的整体，原短语中的介词或副词绝对不能漏掉。【正误对比】

【错例】Thefamousinventorwaslaughedwhenhefirstshowedhisidea.→【正例】Thefamousinventorwaslaughedatwhenhefirstshowedhisidea.

【错例】Greatattentionmustbepaidourdailyhandwriting.→【正例】Greatattentionmustbepaidtoourdailyhandwriting.【语法规则】动词短语是一家，变了被动不分家；介词副词随身带，丢盔弃甲必定差。易错点4：主动形式表达被动意义的典型词类（感官系动词、特性动词）【易错点】把Thedishsmellsdelicious误写成issmelled；把Thebooksellswell误写成issoldwell。【错因分析】有两类动词通常以主动语态形式表达被动含义：①感官系动词：look,sound,smell,taste,feel，后接形容词作表语，绝无被动语态；②表示事物内在属性或品质的动词：sell,write,read,wash,clean,wear,cut，当与well,easily,smoothly等副词连用修饰主语特性时，习惯用主动形式表达被动意义（如Thispenwritessmoothly）。【正误对比】

【错例】Thechocolatecakeistasteddelicious.→【正例】Thechocolatecaketastesdelicious.

【错例】Hisnewnovelaboutscientificinventionsissoldwell.→【正例】Hisnewnovelaboutscientificinventionssellswell.【语法规则】感官系动词表感觉，主动形式表被动；特性动词配副词，sellwell/readsmoothly不用被动声。易错点5：bemadeof/bemadefrom/bemadein/bemadeby的介词混淆【易错点】在描述纸张由木头制成时错用of，在描述桌子由木头制成时错用from。【错因分析】bemadeof表示“由……制成”，原材料未发生化学质变，肉眼仍可看出原料（如Thedeskismadeofwood）；bemadefrom表示“由……制成”，原材料经过化学变化，肉眼看不出原本模样（如Paperismadefromwood/Wineismadefromgrapes）；bemadein后接产地（如madeinChina）；bemadeby后接制造者（如madebyworkers）。【正误对比】

【错例】Thispairofchopsticksismadefrombamboo.→【正例】Thispairofchopsticksismadeofbamboo.

【错例】Breadismadeofwheatandmilk.→【正例】Breadismadefromwheatandmilk.【语法规则】看得出原料of清，看不出原料from明；in后面接地名，by后面是匠人名。易错点6：主动变被动时人称代词主宾格与主谓一致的联动失误【易错点】把主动句的宾语代词直接搬到被动句主语位置（如Himwasgivenabook），或忽视新主语的单复数变化导致be动词用错。【错因分析】主动变被动是一项综合工程：①宾格代词变为被动句主语时必须转为主格（him->he,them->they）；②be动词的数必须与“新主语”一致，而不是沿用原句主语的单复数；③原主语若需保留，置于by后并转为宾格。【正误对比】

【错例】Theyproducehigh-techchips.→High-techchipsisproducedbythem.→【正例】High-techchipsareproducedbythem.

【错例】Theteacherpraisedhim.→Himwaspraisedbytheteacher.→【正例】Hewaspraisedbytheteacher.【语法规则】宾变主格把身翻，be动词随新主变；单复时态双对照，by引宾格在后边。易错点7：带复合宾语（使役/感官动词+宾语+宾补）的被动语态to的还原【易错点】在主动句中省略to的make/see/hear/watch/noticesb.dosth.，变被动后忘记还原to。【错因分析】主动语态中，make,let,see,hear,watch,notice等后接省略to的不定式作宾补；变被动语态后，受动词性质改变影响，必须严格还原不定式符号to，即bemadetodo,beseentodo,beheardtodo。【正误对比】

【错例】Thelazyworkersweremadecleanthemachinebytheboss.→【正例】Thelazyworkersweremadetocleanthemachinebytheboss.

【错例】Astrangerwasnoticedentertheresearchlabyesterday.→【正例】Astrangerwasnoticedtoentertheresearchlabyesterday.【语法规则】主动省to省得妙，被动若漏打问号；只要变身被动式，赶紧把to补报到。Unit5PowerofIdeas·配套练习一、用所给词的适当形式填空Tea,oneofthemostpopulardrinksintheworld,______(produce)mainlyinsouthernChina.Thetelephone______(invent)byAlexanderGrahamBellin1876.ThesecottonT-shirtsfeelverysoftandthey______(wash)easily.ThetraditionalChinesesilkumbrellaismade______bambooandsilk.Deliciouswineismade______freshgrapesthroughspecialfermentation.Greatideasshould______(encourage)andputintopracticeassoonaspossible.Theancientstonebridge______(build)bylocalworkershundredsofyearsago.Thenaughtyboywasmade______(stand)outsidetheclassroombytheteacher.Abigbunchofflowerswasgiven______ourchemistryteacheronTeachers'Day.Thefreshbreadinthebakery______(smell)soinvitingthatpeoplecan'thelpbuyingsome.二、按要求改写句子BiShenginventedmovabletypeprintinginancientChina.(改为被动语态)

Movabletypeprinting____________byBiShenginancientChina.Workersproducethousandsofelectriccarsinthismodernfactoryeveryweek.(改为被动语态)

Thousandsofelectriccars____________byworkersinthismodernfactoryeveryweek.Thecompanygavetheyoungengineeraninnovationaward.(以aninnovationaward为主语改为被动语态)

Aninnovationaward__________________theyoungengineerbythecompany.Wemustprotectourintellectualpropertyrightscarefully.(改为被动语态)

Ourintellectualpropertyrights__________________carefully.Theysawthesuspiciousmanentertheresearchroom.(改为被动语态)

Thesuspiciousman__________________entertheresearchroom.三、单句改错（每句有一处错误）(诊断改错)ThegreatinventionwaswidelyspreadandusedalloverEuropeinthe15thcentury.→____________________(诊断改错)Paperismadeofwood,anditwasinventedinancientChina.→____________________(诊断改错)Thisbrandofpenissoldverywellbecauseitwritessmoothly.→____________________(诊断改错)Theinjureddogwaslookedbyawarm-heartedvolunteeryesterday.→____________________(诊断改错)Theseoldmachinescan'toperatewithoutelectricity;theymustberepairatonce.→____________________四、语篇语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。Greatideashavealwaysbeentheengineofhumanprogress.InancientChina,fourgreatinventions1.______(create)byourancestorsandlaterspreadacrosstheworld.Paper,forexample,2.______(make)fromwoodandbamboo,anditchangedthewayknowledge3.______(record).Today,thepowerofideasisstillchangingourcountry.High-speedtrains4.______(run)atover350kilometresanhour,andnewenergyvehicles5.______(sell)inmorethanonehundredcountries.TheC919passengerplane,which6.______(develop)byChineseengineers,hasalreadycarriedmillionsofpassengers.Inthepast,suchachievementscouldhardly7.______(imagine).Theseproducts8.______(make)inChinaarenowwelcomedallovertheworld.Itiswidelybelievedthatcreativitymust9.______(encourage)fromanearlyage.Whenyoungpeople'sideas10.______(put)intopractice,thefuturewillbebrighter.

参考答案与解析Unit5PowerofIdeas·一、用所给词的适当形式填空1.isproduced(Tea不可数，陈述客观事实用一般现在时被动语态)2.wasinvented(1876为确切过去时间，用一般过去时被动语态)3.wash(特性动词与副词easily连用，主动表被动含义)4.of(看得出原材料用bemadeof)5.from(化学变化看不出原材料用bemadefrom)6.beencouraged(情态动词should后接be+done)7.wasbuilt(hundredsofyearsago提示一般过去时被动语态)8.tostand(makesb.do变被动语态还原to，即bemadetodo)9.to(givesth.tosb.的被动语态Sth.isgiventosb.)10.smells(感官系动词用主动形式表达被动意义，主语单数填smells)二、按要求改写句子11.wasinvented(主动变被动，过去时单数用wasinvented)12.areproduced(主语cars为复数，一般现在时被动语态用areproduced)13.wasgivento(给某人物品变被动，人前加介词to)14.mustbeprotected(情态动词被动语