Unit 4 Global warming grammar 強調(diào)句教案-高中英語人教新課標(biāo)選修六

EmphaticSentenceTheEarthisBecomingWarmer–butDoesItMatter?授課人：授課班級：授課時長：45min授課課型：語法課授課內(nèi)容：強調(diào)句（選修6TheEarthisBecomingWarmer-butDoesItMatter?）教學(xué)目標(biāo)學(xué)生能夠在閱讀、聽力過程中理解作者、說話者用強調(diào)句表達的意思，10%的學(xué)生能夠很快地辨別出說話者使用了強調(diào)句。80%的學(xué)生能夠有意識地在寫作和日常會話中運用下列句型。陳述形式：Itis/was+強調(diào)部分+that+...Ifthepartyouwanttoemphasizeisaperson,canuse“who”toreplace“that”.疑問形式：Was/Is+it+強調(diào)部分+that/who+…?（一般疑問句）Wh-(interrogative)+was/is+that/who+...?（特殊疑問句）加情態(tài)動詞的強調(diào)句：Itmightbe+強調(diào)部分+that/who+...Itmusthavebeen+強調(diào)部分+that/who+...50%的學(xué)生能夠了解強調(diào)句和時間狀語從句的區(qū)別。通過閱讀課文能夠知道全球變暖的嚴(yán)重性，提高綠色生活的意識。教學(xué)重難點 [重點]通過對課文文本的閱讀發(fā)現(xiàn)總結(jié)出強調(diào)句的基本句型。通過對比強調(diào)句與一般陳述句，了解強調(diào)句的作用。通過練習(xí)能夠理解和運用強調(diào)句。[難點]能夠區(qū)分強調(diào)句和時間狀語從句。教學(xué)過程1.Warmingup(1)全班齊讀課文paragraph1,paragraph3andparagraph4。(這三個段落中分別包含一句強調(diào)句)2.Presentation(1)讓同學(xué)們比較一對句子Itishumanactivitythathascausedthisglobalwarming. Humanactivityhascausedthisglobalwarming.然后讓同學(xué)們找到剛剛讀的課文部分的另外兩個有著相同句式的句子，并讓他們試著將強調(diào)句式的原句改為普通的陳述句。最后讓同學(xué)們翻譯這三組句子并且比較在這兩組句子所表達的含義有什么不一樣的地方。ItwasascientistcalledCharlesKeeling,whomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.AscientistcalledCharlesKeelingmadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.Itistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.Theburningofmoreandmorefossilfuelshasresultedinthisincreaseincarbondioxide.(2)講解陳述形式的強調(diào)句句型：Itis/was+強調(diào)部分+that+...3.Practice(1)Pairwork–兩人一組進行句子改寫活動，將下列句子改寫成兩句不同的強調(diào)句分別強調(diào)不同的內(nèi)容。AscientistcalledCharlesKeelingmadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.Emphasize“theamountofcarbondioxide”Emphasize“from1957to1997”Theburningofmoreandmorefossilfuelshasresultedinthisincreaseincarbondioxide.Emphasize“thisincreaseincarbondioxide”Emphasize“carbondioxide”(2)Individualwork–改寫下列句子，用強調(diào)句型強調(diào)原句中的劃線部分。完成后請同學(xué)回答，邀請基礎(chǔ)較為薄弱的同學(xué)進行嘗試。Scientistswarnedthatgreenhousegaseswouldwarmtheearthbytrappingheatenergyintheatmosphere.Thegreenhouseeffectgivestheearth’ssurfacetheaveragetemperatureof15℃.Muchoftheenergyusedtolightandheatourhomescomesfromfossilfuels.Thedevelopedcountriesconsumethenmostenergyintheworld.Carbondioxidehasthetendencytostayintheatmosphereforcenturieswhileothergreenhousegasesstayintheatmosphereonlyforadayorless.Low-lyingcountriesfeeltheirveryexistenceisindangerfromrisingsealevels.Environmentalistshavetriedtostoptheearth’stemperaturerising.Scientistswanttofindoutaboutfutureclimatechangesandtheireffectsonoutenvironment.Intheyearahead,theleveloftheseacouldrisebyseveralmetersbecauseofglobalwarming.Inthefutureouterspacemightprovideuswithnewenergysources.4.Production(1)Groupwork–Workingroupoffour.Student1writesdownonesentenceinfollowingsentencestructure,whichrelatestoownlife;thenstudent2changesitintoemphaticsentenceandemphasizingthesubject;student3emphasizestheobject;student4emphasizethetime.Thenstudent2writesdownonesentence,student3emphasizesthesubject;student4emphasizestheobject,student1emphasizesthetime,etc.分組時，在每組安排一位較為優(yōu)秀的學(xué)生，帶領(lǐng)其他學(xué)生進行活動。Example:S1:Iboughtthiscarlastmonth.S2:ItwasIwhoboughtthiscarlastmonth.S3:ItwasthiscarthatIboughtlastmonth.S4:ItwaslastmonththatIboughtthiscar.(2)Pairwork–向?qū)W生展示強調(diào)句的疑問句形式，并讓同學(xué)們將商議活動中的問題改寫成問句形式，兩人一組進行疑問一大的對話。Example:S1:Whowasitthatboughtthiscarlastmonth?S2:ItwasIwhoboughtthiscarlastmonth.S1:Whatwasitthatyouboughtlastmonth?S2:ItwasthiscarthatIboughtlastmonth.S1:Whenwasitthatyouboughtthiscar?ItislastmonththatIboughtthiscar.(3)通過5個單項選擇題幫助學(xué)生們對比強調(diào)句和狀語從句的區(qū)別，從而讓他們了解到如何區(qū)分兩種句型。挑選理解能力較強的學(xué)生回答問題。Itwasthreeo’clock_____helefthere.A.that B.when C.since D.beforeAdverbialclauseItisthreehours_____helefthere.A.that B.when C.since D.beforeAdverbialclauseItwasthreehoursago_____helefthere.A.that B.when C.since D.beforeEmphaticsentenceItwillbethreehours_____heleaveshere.A.that B.when C.since D.beforeAdverbialclauseItwasn’tlong_____helefthere.A.that B.when C.since D.beforeAdverbialclause5.HomeworkChooseatopicyoulike(egglobalwarming,wildlifeprotection,music,film,etc)forthisactivity.Writeashortarticleabout100wordsusingtheemphatic“it”atleasttwice.Shareyourworkwithyourgroupmembersandchooseonebestarticle.Getreadytoshareitwithyourclassmatesinnextclass.(Groupwork)Showthemtheemphaticsentencewithmodelverbsandletthemaddmodelverbstothesentenceinactivity5.(Individualwork)反思