外研版（2024）七年級(jí)下冊(cè) Unit 8 Lesson 5 Grammar in Use

Unit8OurBluePlanetLesson5GrammarinUseLearningObjectivesInthisclass,youwill理解數(shù)字的結(jié)構(gòu)、含義和使用方法以及祈使句的用法使用本單元所學(xué)語(yǔ)法知識(shí)獲取不同水域的特點(diǎn)并描述如何

節(jié)約用水樹立節(jié)約用水的意識(shí)Lead-inActivity1Lookatthepicturesandguessitsnameaccordingtothedescriptions.The____________isabout4,600squarekilometers.The________________isabout6,300kilometers.QinghaiLakeChangjiangRiverActivity1Lookatthepicturesandreadthesentences.Payattentiontothenumbers.TheQinghaiLakecoversabout4,600squarekilometers.ObservingTheChangjiangRiverisabout6,300kilometers.ThecoastlineoftheArcticOceanisabout45,390kilometerslong.TheAtlanticOceancoversmorethan93,000,000squarekilometers.Weuseacommaevery3digitsfromtherightwhenthenumberisgreaterthan999.SummarizingActivity2Readthenumbersandcompletethetable.4,186fourthousand,onehundredandeighty-six45,390forty-five_________,three__________andninety6,363,000sixmillion,threehundredandsixty-threethousand1,386,000,000onebillion,threehundredandeighty-six____________909,090,009,900ninehundredandnine__________,ninety____________,nine__________,ninehundredthousandhundredmillionbillionmillionthousandApplyingActivity3Completethesentenceswiththenumbersinthebrackets.fourteenmillionandtwohundredthousandeleventhousand,threehundredandfiftythreehundredandsixtymillionthreehundredandsevenmillionAntarcticaisabout______________________________________(14,200,000)squarekilometersinsize,andicecoversabout98percentoftheland.TheSeaofMarmaraisabout__________________________________(11,350)squarekilometers.Oceanscoverabout_______________________________(360,000,000)squarekilometersoftheearth.Thereareabout_____________________________(307,000,000)lakesintheworld.ObservingLookatthepicture.Guesswhattheyaretalkingabout.(XiaoYaisknockingonthedoor.)MissWang:...XiaoYa:…MissWang:…ObservingActivity1Pairwork.Readtheconversation.Payattentiontotheimperativesentences.(XiaoYaisknockingonthedoor.)Comein,pleaseOh,don’tputithere.Pleaseputitonthatbigchair.MissWang,hereistheposteraboutsavingtheocean.CanIputitonthetable?SummarizingActivity2Completethetableandlearnhowtouseimperativesentences.PositiveNegative_______everydropofwater.Don’t_______wasteintothelakes._______enoughwater._______wastewater.Savewater,saveourplanet!No___________inthatlake._______yourstep!Theflooriswet.Never_______thewaterrunning.Let’s______aposteraboutsavingwater.Let’snot_______here!SaveDrinkMindmakethrowDon’tswimmingkeepspeakApplyingActivity3Matchthepictureswiththewordsorphrases,andthenmakeimperativesentences.littertakeashowerswimturnoffcollectfishApplyingActivity3Matchthepictureswiththewordsorphrases,andthenmakeimperativesentences.littertakeashowerswimturnoffcollectfish·Turnoffthetapwhilebrushingteeth.·Don’tlitteraround.·…SummaryWelearn:rulesofreadingandwritingthenumbers.tousetheimperativesentences.Wecan:builduptheawarenessofsavi