沪教版（2024）八年级下册英语Unit3 单词表单词和词组解析

第第页沪教版（2024）八年级下册英语Unit3单词表单词和词组解析单词表备课讲解1.performance词性：名词（n.）词义：表演，演出；表现，业绩近义词：show,presentation,act词性转换：perform(v.表演)，performer(n.表演者)固定搭配：giveaperformance,liveperformance,schoolperformance例句：Thestudentsgaveanexcellentperformanceattheschoolconcert.2.combine词性：动词（v.）词义：结合，联合，混合近义词：join,unite,mix反义词：separate,divide词性转换：combination(n.结合)，combined(adj.结合的)固定搭配：combinewith,combineAandB例句：Wecancombinestudywithentertainmenttomakelearningfun.3.theme词性：名词（n.）词义：主题近义词：topic,subject,mainidea词性转换：thematic(adj.主题的)固定搭配：themepark,themesong,maintheme例句：Thethemeofourschoolartshowis"ProtectingtheEnvironment".4.advanced词性：形容词（adj.）词义：先进的，高级的；高等的近义词：developed,modern,high-level反义词：basic,elementary,simple词性转换：advance(v./n.前进/进步)，advancement(n.进步)固定搭配：advancedtechnology,advancedcourse例句：Therobotusesadvancedartificialintelligencetohelppeople.5.artificialintelligence(AI)词性：名词短语（n.）词义：人工智能近义词：machineintelligence反义词：humanintelligence固定搭配：AItechnology,AIsystem例句：Artificialintelligenceischangingthewayweliveandwork.6.hero词性：名词（n.）词义：英雄；男主角近义词：champion,idol反义词：coward词性转换：heroic(adj.英雄的)，heroine(n.女英雄)固定搭配：nationalhero,superhero,例句：Inthestory,theherosavesthecityfromdanger.7.classic词性：形容词（adj.）或名词（n.）词义：（adj.）经典的；典型的；（n.）经典作品，名著近义词：traditional,timeless,masterpiece反义词：modern词性转换：classical(adj.古典的)，classicism(n.古典主义)固定搭配：classicnovel,classicfilm,classicexample例句：RomeoandJulietisaclassicstoryaboutlove.8.speech词性：名词（n.）词义：演说，讲话；说话能力近义词：talk,address,presentation反义词：silence词性转换：speak(v.说话)，speaker(n.演讲者)固定搭配：giveaspeech,freedomofspeech,speechcontest例句：Theprincipalgaveaspeechattheopeningceremony.9.text词性：名词（n.）词义：文本，课文；短信近义词：passage,writing,message词性转换：textbook(n.教科书)，textual(adj.文本的)固定搭配：textmessage,textbook,maintext例句：Pleasereadthetextonpage45andanswerthequestions.10.warning词性：名词（n.）词义：警告，警示近义词：caution,alert,notice反义词：encouragement词性转换：warn(v.警告)固定搭配：warningsign,giveawarning,withoutwarning例句：Theredlightisawarningthatthemachineishot.11.mind词性：名词（n.）和动词（v.）词义：（n.）头脑，思想；（v.）介意，在乎近义词：（n.）brain,thought；（v.）care,object反义词：（v.）don'tmind,accept固定搭配：changeone'smind,makeupone'smind,minddoingsth例句：Wouldyoumindclosingthewindow?It'scoldinhere.12.gap词性：名词（n.）词义：间隙，差距；空白近义词：space,distance,difference反义词：connection,continuity固定搭配：generationgap,gapyear,fillthegap例句：Thereisabiggapbetweentherichandthepoorinsomecountries.13.crash词性：动词（v.）和名词（n.）词义：（v.）碰撞；坠毁；（计算机）崩溃；（n.）撞击声；事故近义词：collide,smash,accident固定搭配：carcrash,planecrash,computercrash例句：ThecomputercrashedandIlostallmywork.14.wave词性：名词（n.）和动词（v.）词义：（n.）波浪，海浪；挥手；（v.）挥手；波动近义词：（n.）ripple；（v.）gesture,signal反义词：（v.）standstill固定搭配：wavegoodbye,soundwave,heatwave例句：Shewavedtoherfriendsasthetrainleftthestation.15.folk词性：形容词（adj.）和名词（n.）词义：（adj.）民间的，民俗的；（n.）人们（复数）近义词：（adj.）traditional；（n.）people,public反义词：（adj.）modern,official词性转换：folklore(n.民间传说)固定搭配：folkmusic,folktale,folkart例句：Thefolksongsofthisareaareverybeautiful.16.risk词性：名词（n.）和动词（v.）词义：（n.）风险，危险；（v.）冒险近义词：（n.）danger,chance；（v.）endanger反义词：（n.）safety,security词性转换：risky(adj.危险的)固定搭配：atrisk,takearisk,riskdoingsth例句：Don'triskyourhealthbystayinguptoolate.17.leather词性：名词（n.）词义：皮革固定搭配：leatherjacket,leathershoes,genuineleather例句：Hisnewleatherbaglooksverystylish.18.advantage词性：名词（n.）词义：优点，优势；好处近义词：benefit,strength,edge反义词：disadvantage,drawback,weakness词性转换：advantageous(adj.有利的)固定搭配：takeadvantageof,haveanadvantageover例句：Oneadvantageoflivinginthecityistheconvenienttransportation.19.breath词性：名词（n.）词义：呼吸，气息近义词：breathing,air词性转换：breathe(v.呼吸)，breathless(adj.喘不过气的)固定搭配：takeadeepbreath,outofbreath,holdone'sbreath例句：Afterrunning,hewasoutofbreath.20.element词性：名词（n.）词义：元素；要素，成分近义词：component,part,factor反义词：whole,entirety词性转换：elemental(adj.基本的，自然力的)固定搭配：basicelements,chemicalelement,essentialelement例句：Waterismadeupoftwoelements:hydrogenandoxygen.21.shadowpuppet词义：皮影戏用法：名词短语，指中国传统民间艺术形式例句：ShadowpuppetshowsareatraditionalChinesefolkart.22.ink-washpainting词义：水墨画用法：名词短语，指中国传统绘画形式例句：Mygrandfatherisgoodatink-washpainting.23.cometolife词义：变得生动；活跃起来近义词：becomeactive,springtolife反义词：becomestill,diedown例句：Theoldstorycametolifeinthenewmovie.24.withthehelpof词义：在…的帮助下近义词：withtheassistanceof,aidedby反义词：withouthelp,onone'sown例句：Withthehelpofthemap,wefoundthemuseumeasily.25.comicstrip词义：连环漫画用法：名词短语，指由一系列画面组成的漫画例句：Ireadafunnycomicstripinthenewspapereverymorning.26.watchout词义：小心，留神近义词：becareful,lookout反义词：becareless,ignore用法：常用于祈使句，提醒他人注意危险例句：Watchout!There'sacarcoming!27.lookout词义：小心，注意近义词：watchout,becareful反义词：becareless辨析：与watchout意思相近，常可互换例句：Lookoutforthestep—it'sabithigh.28.weatherforecast词义：天气预报用法：名词短语例句：Accordingtotheweatherforecast,itwillraintomorrow.29.lifejacket词义：救生衣用法：名词短语例句：Everyoneontheboatmustwearalifejacket.30.thankgoodness词义：谢天谢地近义词：thankheavens,fortunately反义词：unfortunately,unluckily用法：表达欣慰或解脱的感叹语例句：Thankgoodnessyou'resafe!Weweresoworried.31.makeit词义：获得成功；及时到达近义词：succeed,arriveintime反义词：fail,miss用法：口语常用表达例句：Ifwehurry,wecanmakeittothecinemabeforethefilmstarts.32.dateback词义：追溯到近义词：gobackto,originatefrom用法：常接"to+时间"例句：Thistraditiondatesbacktothe18thcentury.33.haveaninfluenceon词义：对…有影响近义词：affect,impact用法：influence后可接人或事物例句：Teachershaveagreatinfluenceontheirstudents.34.folkart词义：民间艺术用法：名词短语例句：PapercuttingisatraditionalChinesefolkart.35.atriskof词义：有…的危险近义词：indangerof反