北師大版高中英語選修七unit 21《human biology》(warm up)word學(xué)案

1、Unit21Unit21warmwarmupup學(xué)習(xí)目標(biāo)Bytheendoftheclassthestudentswillbeableto:Learnsomewdsaboutourbody學(xué)習(xí)過程課堂活動（一）預(yù)習(xí)交流DoDoYouYouLookLookAfterAfterYourselfYourself1.How1.Howmanymanyhouhoursrsdodoyouyousleepsleepperpernightnighta)u

2、nder6hoursb)about78hoursc)methan9hours2.How2.Howoftenoftendodoyouyoucleancleanyouryourteethteetha)onceadayb)twiceadayc)aftereverymeal3.How3.Howoftenoftendodoyouyoudodophysicalphysicalexerciseexerciseenoughenoughtotomakem

3、akeyouyououtoutofofbreathbreatha)neverb)onceaweekc)twothreetimesaweek4.How4.Howoftenoftendodoyouyoueateatsweetssweetschocolchocolateatea)neverb)sometimesc)everyday5.5.HowHowmanymanypiecespiecesofoffreshfreshfruitsfruitsd

4、odoyouyoueateatperperdaydaya)Onetwob)methantwoc)none（二）合作探究ReadReadthethewdsthenwdsthenmatchmatchthethewdswdswithwiththeirtheirChineseChinesemeanings.meanings.Findsixkeywdstolabelthepartsofthebodyinthediagram.（三）分層提高Look

5、atthefollowingstatementsdecidewhichpartofthebodyisdescribed.Thisganweighsaboutakiloismadeupoftwosides.Itislikeasupercomputerthatprocessesinfmation.Thisganislikeabagwhichreeiveseverythingyoueat.Itdigestsyourfoodsendsvitam

6、insmineralsintotheblood.Thisganbeatsatregularintervals100000intervaldigestswaphearingpulsen.聽覺聽覺n.間隔；間歇間隔；間歇n.脈搏脈搏vt.消化消化vi.交換交換timesaday.Witheachbeatitcirculats80mlofbloodthroughthebody—that’s8000litresofbloodperday!Itp

7、umpsbloodintothelungswhereitreceivesoxygenBefebeingpumpedaroundtherestofthebody.Thisisaverydelicategan.Therearetwoinabodytheyhavedelicatelidswhichprotectthem.Lightentersreachesspeciallightsensitivecells.Thesewklikeacamer