Unit8 Our Blue Planet（第5课时）Grammar in use.课件 七年级英语下册 仁爱科普2024

Unit8OurBluePlanetGrammarinuse（仁爱版2024）七年级下02PresentationPractice4Consolidation6SummaryAssessmentHomework1357LearningobjectivesLeadinBytheendofthelesson,Iwillbeableto...123correctlyreadandwritelargenumbersandmasterthecomma-separationrule;understandandusetheaffirmativeandnegativeformsofimperativesentencestogiveenvironmentalprotectioninstructions;describegeographicalphenomenathroughactualdatatoenhancescientificliteracy.Learningobjectives00Leadin01Watchavideo.Leadin01OceanWhizQuiz.Howlongisthebodylengthofanaverageadultdolphin?A.2-4metersB.20–40metersLeadin01OceanWhizQuiz.2.Howmanytentaclesdoesamoonjellyfishusuallyhave?A.About4-5tentaclesB.About40-50tentaclesLeadin01OceanWhizQuiz.3.Howfarcanaseahorseswiminaboutanhour?A.

About100-200meters.B.About10-20metersLeadin01OceanWhizQuiz.4.Howdeepcanaspermwhaleusuallydiveunderwater?A.

100-200meters.B.1000-2000meters.Lookatthepicturesandguessitsnameaccordingtothedescriptions.Presentation02Activity1Lookandguess.Lookatthepicturesandguessitsnameaccordingtothedescriptions.Howbigisit?Presentation02Activity1Lookandguess.Whereisit?The____________isabout_____________squarekilometers.QinghaiLake4,600fourthousandsixhundredLookatthepicturesandguessitsnameaccordingtothedescriptions.Howlongisit?Presentation02Activity1Lookandguess.Whereisit?The________________isabout________________kilometers.ChangjiangRiver6,300sixthousandthreehundredLookatthepicturesandguessitsnameaccordingtothedescriptions.Howlongisit?Presentation02Activity1Lookandguess.Whereisit?Thecoastlineof______________isabout________kilometerslong.theArcticOcean45,390Forty-fivethousandthreehundredninetyLookatthepicturesandguessitsnameaccordingtothedescriptions.Howlongisit?Presentation02Activity1Lookandguess.Whereisit?The_____________coversmorethan_____________squarekilometers.AtlanticOcean93,000,000ninety-threemillionActivity1Lookandreadthesentences.

Payattentiontothenumbers.TheQinghaiLakecoversabout4,600squarekilometers.TheChangjiangRiverisabout6,300kilometers.ThecoastlineoftheArcticOceanisabout45,390kilometerslong.TheAtlanticOceancoversmorethan93,000,000squarekilometers.Presentation02fourthousandsixhundredsixthousandthreehundredForty-fivethousandthreehundredninetyninety-threemillionActivity1Lookandreadthesentences.

Payattentiontothenumbers.Presentation02fourthousandsixhundredsixthousandthreehundredForty-fivethousandthreehundredninetyninety-threemillionWeuseacommaevery3digitsfromtherightwhenthenumberisgreaterthan999.4,6006,30045,39093,000,0001,425,657,565Let’slearn!Presentation02hundredfivehundredandsixty-fivethousandsixhundredandfifty-seventhousandmillionfourhundredandtwenty-fivemillionbilliononebillionActivity2Readandcompletethetable.4,186fourthousand,onehundredandeighty-six45,390forty-five_________,three__________andninety6,363,000sixmillion,threehundredandsixty-threethousand1,386,000,000onebillion,threehundredandeighty-six____________909,090,009,900ninehundredandnine__________,ninety____________,nine__________,ninehundredthousandhundredmillionbillionmillionthousandPresentation021.Antarcticaisabout________________________________________________(14,200,000)squarekilometersinsize,andicecoversabout98percentoftheland.2.TheSeaofMarmaraisabout__________________________________(11,350)squarekilometers.3.Oceanscoverabout_______________________________(360,000,000)squarekilometersoftheearth.4.Thereareabout_____________________________(307,000,000)lakesintheworld.Activity3Completethesentences.fourteenmillionandtwohundredthousandeleventhousand,threehundredandfiftythreehundredandsixtymillionthreehundredandsevenmillionPresentation02Presentation02Playagame.Readandsaythenumbers.2341,23443,251143,2516,143,25146,143,251846,143,2512,846,143,251XiaoYaisknockingonthedoor.Presentation02Lookatthepictureandguess.Presentation02Lookatthepicture.Guesswhattheyaretalkingabout.What’sthis?Whatdoesitsayonthepicture?It’saposteraboutsavingtheocean.Readtheconversation.Payattentiontotheimperativesentences.Come

in,pleaseOh,don’tputithere.Pleaseputitonthatbigchair.MissWang,hereistheposteraboutsavingtheocean.CanIputitonthetable?Presentation02Activity1Pairwork.Activity2Completethetableandlearnhowtouseimperativesentences.PositiveNegative_______everydropofwater.Don’t_______wasteintothelakes._______enoughwater._______wastewater.Savewater,saveourplanet!No___________inthatlake._______yourstep!Theflooriswet.Never_______thewaterrunning.Let’s______aposteraboutsavingwater.Let’snot_______here!SaveDrinkMindmakethrowDon’tswimmingkeepspeakPresentation02建议提醒邀请要求命令主语“You”通常被省略，一般以动词原形开头。祈使句的概念:1用于表达_________________________________等的句子。2主语__________________________________________。3可在句首或句末加上__________表示礼貌。4句末用______________，用__________来读。Let’slearn!Presentation02建议提醒邀请要求命令“You”通常被省略，一般以动词原形开头。Please感叹号或者问号降调Presentation02Let’slearn!肯定祈使句(1)_______________________

(2)_______________________(3)________________________Positive_______everydropofwater._______enoughwater.Savewater,saveourplanet!_______yourstep!Theflooriswet.Let’s______aposteraboutsavingwater.SaveDrinkMindmakeDo型:动词原形开头Be型:Be十名词

Let型:Let+宾语+动词原形Bequiet.Presentation02Let’slearn!NegativeDon’t_______wasteintothelakes._______wastewater.No___________inthatlake.Never_______thewaterrunning.Let’snot_______here!throwDon’tswimmingkeepspeak否定祈使句(1)____________________________ (2)____________________________Do型和Be型:句首加Don’t或neverNo型:“No+名词/动名词”(3)____________________________Let型:Let十宾语十not十动原Matchthepictureswiththewordsorphrases.littertakeashowerswimturnoffcollectfishPractice03Activity3Matchthepictures.

Turnoffthetapwhilebrushingteeth.

Don’tlitteraround.

…Practice03Makeimperativesentences.Activity3Matchthepictures.littertakeashowerswimturnoffcollectfishLookandsay.Practice03Nolittering!Keepoffthegrass!Lookandsay.Practice03Don'tmakeanoise!Waitinline!Lookandsay.Practice03Don'tbelateforclass!Keeptheclassroomclean!以“OurBluePlanetandWaterConservation”为主题，制作一份简单的海报。Production04Groupwork.

1,425,657,565hundredthousandmillionbillionDo型:动词原形开头Be型:Be十名词

Let型:Let+宾语+动词原形1.至少三个用英语表达的数字信息。2.至少五个祈使句。否定句首加Don’t或neverNo+名词/动名词Let十宾语十not十动原Summary05Thegrammarwehavelearned

单项选择()1.45,390正确的读法是：

A.forty-fivethousand,threehundredandninety

B.forty-fivehundreds,threehundredsandninety

C.forty-fivethousand,threeandninety()2.表示“909,090,009,900”中第二个“9”的数位的英文单词是：A.bi