新概念英語(yǔ)第一冊(cè)Lesson____重點(diǎn)語(yǔ)法與練習(xí)精析各位英語(yǔ)學(xué)習(xí)者，大家好！今天我們將聚焦《新概念英語(yǔ)》第一冊(cè)Lesson129至130課的核心內(nèi)容，通過(guò)系統(tǒng)性的練習(xí)來(lái)鞏固所學(xué)。這兩課的精髓在于情態(tài)動(dòng)詞must與can't用于推測(cè)的用法，這是日常交流中判斷事物可能性的重要表達(dá)，掌握它們能讓你的語(yǔ)言更具邏輯性和說(shuō)服力。一、核心語(yǔ)法點(diǎn)回顧在進(jìn)入練習(xí)之前，我們先簡(jiǎn)要回顧這兩課的核心語(yǔ)法，為后續(xù)練習(xí)打下堅(jiān)實(shí)基礎(chǔ)：1.情態(tài)動(dòng)詞must表示“肯定推測(cè)”*含義：表示說(shuō)話人對(duì)某件事情有相當(dāng)把握的肯定推測(cè)，意為“一定是”、“準(zhǔn)是”。*用法：must+動(dòng)詞原形(表示對(duì)現(xiàn)在情況的推測(cè))。*例句：Thatmanmustbeournewteacher.(那個(gè)男人一定是我們的新老師。)Shemustlivenearby.(她一定住在附近。)2.情態(tài)動(dòng)詞can't表示“否定推測(cè)”*含義：表示說(shuō)話人對(duì)某件事情有相當(dāng)把握的否定推測(cè)，意為“不可能是”、“一定不是”。*用法：can't+動(dòng)詞原形(表示對(duì)現(xiàn)在情況的推測(cè))。*例句：Hecan'tbeadoctor.He'stooyoung.(他不可能是醫(yī)生，他太年輕了。)Thiscan'tbemybook.Minehasaredcover.(這不可能是我的書(shū)，我的書(shū)是紅色封面的。)3.對(duì)過(guò)去動(dòng)作的推測(cè)(初步接觸)*在這兩課中，我們也初步接觸了對(duì)過(guò)去發(fā)生動(dòng)作的推測(cè)，通常用musthavedone(一定做過(guò)某事)和can'thavedone(不可能做過(guò)某事)。不過(guò)，此部分在第一冊(cè)為初步感知，重點(diǎn)仍在對(duì)現(xiàn)在狀態(tài)的推測(cè)。4.關(guān)鍵詞匯*本課涉及一些描述人或事物特征的形容詞，如famous,expensive,cheap,old,young,foreign,local等，這些詞匯是進(jìn)行推測(cè)的基礎(chǔ)。二、練習(xí)題I.詞匯與句型轉(zhuǎn)換(VocabularyandSentenceTransformation)1.根據(jù)句意及首字母提示完成單詞。*Thatcarisveryexpensive.Itm______belongtoarichperson.*Shecan'tbeastudent.Shelookstooo______.*Thisbookisn'tmine.Itm______beJohn's.Hisnameisonit.*Youc______behungrynow.Youhadabiglunchanhourago.*Thepaintingissobeautiful.Itm______bepaintedbyafamousartist.2.句型轉(zhuǎn)換。將下列陳述句改為否定推測(cè)句和肯定推測(cè)句。*Example:ThisisTom'spen.(肯定推測(cè))ThismustbeTom'spen.(否定推測(cè))Thiscan'tbeMary'spen.*Heisateacher.*肯定推測(cè):_________________________*否定推測(cè):_________________________(假設(shè)我們知道他不是醫(yī)生)*TheyarefromAmerica.*肯定推測(cè):_________________________*否定推測(cè):_________________________(假設(shè)他們說(shuō)中文)II.語(yǔ)法專(zhuān)項(xiàng)練習(xí)(GrammarFocusExercises)1.用must或can't填空。*Lookatthatman!He'swearingapoliceuniform.He______beapoliceman.*Thishouseisveryold.It______bebuiltlastyear.*ShespeaksFrenchfluently.She______befromFranceorBelgium.*Theroomisdark.They______beathome.*Hefailedtheexam.He______havestudiedhard.(對(duì)過(guò)去的否定推測(cè))*Shegotaperfectscore.She______havestudiedveryhard.(對(duì)過(guò)去的肯定推測(cè))2.選擇填空。*A:Whoseumbrellaisthis?B:I'mnotsure.It______beLucy's.Sheoftenforgetshers.A.mustB.can'tC.should*A:IsthatMr.Smith?B:No,it______behim.HehasgonetoLondon.A.mustB.can'tC.may*Thebabyiscrying.She______behungry.A.mustB.can'tC.needn't3.根據(jù)圖片提示或上下文完成句子，使用must或can't。*(圖片：一個(gè)人穿著泳衣，站在游泳池邊)He______begoingswimming.*A:Isawamanrunningoutofthebankjustnow.B:He______beathief!*Thiscaketastesterrible.You______haveputtoomuchsaltinit.閱讀下面短文，然后根據(jù)短文內(nèi)容用must或can't回答問(wèn)題。Maryfoundahandbagonthestreet.Inside,therewasadriver'slicense,somemoney,andasmallnotebook.Thedriver'slicenseshowsawomannamed"LindaWang",whowasbornin1985.Thenotebookhassomenotesaboutteachingplans.1.Whodoesthehandbagbelongto?2.WhatmightLindaWang'sjobbe?3.Canthehandbagbelongtoateenager?Why?情景反應(yīng)：根據(jù)所給情景，用must或can't進(jìn)行合理推測(cè)。1.Youseeapersoncarryingaladderandsomepaintbrushes.Whatmighttheybe?_________________________________________________________2.Yourfriendhasahighfeverandislyinginbed.Howdoyouthinkhefeels?_________________________________________________________(提示：He______feelwell.)_________________________________________________________三、參考答案與解析I.詞匯與句型轉(zhuǎn)換1.must,old,must,can't,must2.Hemustbeateacher.Hecan'tbeadoctor.TheymustbefromAmerica.Theycan'tbefromChina.(或其他說(shuō)中文的國(guó)家)II.語(yǔ)法專(zhuān)項(xiàng)練習(xí)1.must,can't,must,can't,can't,must2.A(must),B(can't),A(must)3.must,must,mustIII.閱讀理解與情景反應(yīng)閱讀理解：1.ItmustbelongtoLindaWang.(因?yàn)槔锩嬗兴鸟{照。)2.Shemustbeateacher.(因?yàn)楣P記本里有教學(xué)計(jì)劃。)3.No,itcan't.BecauseLindaWangwasbornin1985,sosheisnotateenager.(或Shecan'tbeateenager.Theownerwasbornin1985.)情景反應(yīng)：(以下為參考答案，合理推測(cè)即可)1.Hemustbeapainter/decorator.2.Hecan'tfeelwell.3.Shemustbecookingsomething/Shemustbedroppingsomething.四、學(xué)習(xí)建議與拓展1.活學(xué)活用：must和can't是表達(dá)推測(cè)時(shí)非常實(shí)用的詞。在日常生活中，看到不熟悉的人或事物時(shí)，不妨嘗試用它們進(jìn)行推測(cè)，比如"Themanwithacameramustbeatourist."2.對(duì)比記憶：牢記must表示“一定是”（肯定推測(cè)），can't表示“不可能是”（否定推測(cè)）?？梢酝ㄟ^(guò)列表或例句對(duì)比加深印象。3.聽(tīng)力輔助：回顧Lesson____的課文錄音，注意體會(huì)說(shuō)話人在使用