2013北师大版高二下unit 21《human biology》(lesson 1)word教案1

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1、Unit21Lesson1ChewinggumWarm-upTeachingaims1.   newwordsandphrases2.    warm-up3.    studythetext:Tochewornottochew…4.    grammar:conditionalsTeachingtimeTwoperiodsTeachingprocessStep1Revision:1.   haveadictation(unit20newwords)2.   checkhomeworkexercisesStep2newwordslearning1.asksomestuden

2、tstoreadthenewwordsfirstandcorrecttheirpronunciation2.playthetapeandhavethemreadafterthetape3.givethemafewminutestoreadthenewwordsfreely,tellthemiftheycan’treadthenewwords,encouragethemtoasktheteacher.Step3Warm-up1.Readunitobjectives,andaskthestudentstotellusthemeanings.2.warm-up:Exercise1

3、a)askstudentsreadthekeywordsfirst,thenguesstheirmeanings,havethemtranslatethekeywordsintoChinese.b)studentsworkindividually,matchingsixofthekeywordswiththenumbersinthepicture.Then,checktheiranswersc)askthemreadthekeywords.3.Exercise2a)    listentothetapetwice,havestudentsguesswhichpartofth

4、ebodyarebeingdescribed.b)    playthecassette,pausingaftereachsectiontochecktheiranswers.C)answers:1.brain2.heart3.hungs4.eye5.liver4.Exercise3a)makesuretheclassknowwhattodo.Thenplaythetapetwice,asksomestudentstosaytheiranswerstotheclass.5.Exercise4:workinpairsandtestyourbody“machine”a)read

5、outtheinstructionstotheclassandcheckthatstudentsunderstandthem.b)havethestudentsworkinpairsanddiscussthequestions.6.exercise4:givestudentsafewminutestodothequestionnaireinpairs.Thenchecktheirscoresonpage103.step4Reading1.Beforeyoustarta)readtheexercise1andgivethemafewminutestodiscusstheque

6、stionsb)asksomestudentstosharetheirideaswiththeclass.2.Readtolearna)    askthestudentslookatexercise2and3,andthenplaythecassettetwice.b)    givethemtenminutestoreadthetextandcompletethetable.c)    checktheirsanswers3.exercise4a)    givestudentssometimetodotheexercisesinpairsb)    asksomest

7、udentstoanswerthequestions4.Languagepointsa)Dietspecialistsregularlyinformusthatitisimportanttochewourfoodproperly.营养学家们经常告诫我们一定要正确咀嚼食物。句型:Itis+adj.+todosth.It是形式主语,动词不定式是真正的主语.b)itwillhelpourbodiesdigestitbetter.这样才能有助于身体更好地消化食物.helpsb.dosth.c)    doeschewing