譯林版九年級英語下冊Unit 4 Life on Mars第4課時示范課教案

3/3Unit4LifeonMarsGrammar一、教學(xué)目標(biāo)1.掌握重點詞匯和短語：circle,agreement,possibility,stranger,aware,distance,alien,outerspace,astastyas,remindsb.that/ofsth.,besurethat/aboutsth.,thinair,indoorplaygrounds2.掌握重點句型：Aretheysureaboutthefastspeedofspacetravel?IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.3.總結(jié)如何將狀語從句、賓語從句和定語從句轉(zhuǎn)換為簡單句。二、教學(xué)重點及重點重點：總結(jié)如何將狀語從句、賓語從句和定語從句轉(zhuǎn)換為簡單句。難點：總結(jié)如何將狀語從句、賓語從句和定語從句轉(zhuǎn)換為簡單句。三、教學(xué)過程Task1Step1Warming-up

GuideSstowatchavideoandthinkaquestion.WhydoweexploreMars?【設(shè)計意圖】通過觀看視頻并思考問題，引導(dǎo)學(xué)生進(jìn)一步了解火星。Step2Presentation1.PresentsomesentencesandguideSstoobservethesentences.【設(shè)計意圖】通過讓學(xué)生觀察幾組句子，引導(dǎo)學(xué)生發(fā)現(xiàn)并感知復(fù)合句和簡單句之前是如何轉(zhuǎn)換的。2.GuideSstochangesomeadverbialclausesintosimplesentenceswithprepositionalphrasesbeginningwithattheageof,becauseofandwithout.【設(shè)計意圖】通過用含有attheageof,becauseof和without的介詞短語，將一些狀語從句改寫為簡單句，啟發(fā)學(xué)生如何將含有從句的復(fù)合句改寫成簡單句。Step3PracticeGuideSstorewritethesentencesusingthewordsinbrackets.【設(shè)計意圖】通過操練鞏固已學(xué)知識，反饋矯正。Task2Step1Presentation1.PresentsomesentencesandguideSstoobservethesentences.【設(shè)計意圖】通過觀察幾組句子，引導(dǎo)學(xué)生發(fā)現(xiàn)并感知復(fù)合句和簡單句之間的轉(zhuǎn)換。2.GuideSstochangesomeobjectclausesintosimplesentenceswithprepositionslikeofandabout.【設(shè)計意圖】引導(dǎo)學(xué)生用一些介詞，如of和about等將一些賓語從句改寫成簡單句，啟發(fā)學(xué)生如何將含有從句的復(fù)合句改寫成簡單句。Step2PracticeGuideSstorewriteMillie’ssentencesusingthewordsinbrackets.【設(shè)計意圖】在語境中練習(xí)，內(nèi)化語言，為綜合輸出做準(zhǔn)備。Task3Step1Presentation1.PresentsomesentencesandguideSstoobservethesentences.【設(shè)計意圖】通過讓學(xué)生觀察幾組句子，啟發(fā)學(xué)生了解如何將復(fù)合句改寫成簡單句。2.GuideSstochangesomedefiningrelativeclausesintosimplesentenceswithprepositionslikewithandin.【設(shè)計意圖】引導(dǎo)學(xué)生用一些介詞，如with和in等將一些定語從句改寫成簡單句，啟發(fā)學(xué)生如何將含有從句的復(fù)合句改寫成簡單句。Step2Practice1.GuideSstorewritethedefiningrelativeclausesinsimplesentenceswithinorwith.2.GuideSstoreplaceeachoftheunderlinedpartswithanotherexpression.【設(shè)計意圖】通過在語境中操練鞏固已學(xué)知識，反饋矯正。Step3SummarySummarizewhatthey’velearntinthisclass.Step4Homework1.Reviewthegrammarlearnedintheclass.2.PreviewIntegratedskills.【設(shè)計意圖】幫助學(xué)生內(nèi)化語言和信息，積累語言，并預(yù)習(xí)下節(jié)課內(nèi)容。四、板書設(shè)計Unit4LifeonMarsGrammar1.Usingadverbialclausesors