great scientists 单元学案 4

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1、必修5　Units1～2五、一次环保活动StepⅠ千里之行，始于足下。Ajourneyofonethousandmilesbeginswiththefirststep!这里的佳句背诵是为了StepⅢ的满分作文句型提炼与拓展1.学生会组织了一次海滨之行。TheStudents'Unionorganizedatriptotheseaside.2．到达机场后，他把英镑换成了美元。Onarrivingattheairport,heexchangedhispoundsfordollars.3．我们学校开展了丰富多彩的

2、课外活动，如篮球，排球，歌咏比赛等。Ourschoolorganizedcolorfulafterclassactivities,suchasbasketball,volleyball,singingcompetitionsandsoon.4．村民们竖起牌子告诉孩子们在河里游泳危险。Thevillagerssetupboardstoremindchildrenofthedangerofswimmingintheriver.5．他作了一场关于我们应该如何控制自己的演讲。Hegaveaspeechonhowwe

3、cancontrolourselves.1....organizedatrip...……组织了一次旅游。2．onarrivingattheairportAssoonassb.arrivedattheairport...Themoment/Theinstantsb.arrivedattheairport...Immediately/Directlysb.arrivedattheairport...Hardly/Scarcely/Rarelyhadsb.arrivedattheairport...when...

4、Nosoonerhadsb.arrivedattheairport...than...一到达机场3．suchas...andsoon如……等4．setupboardstoremind...ofthedanger竖起牌子提醒……危险5．give/make/deliver/addressaspeechon...作了关于……的演讲趁热打铁，佳句活用对照修改，再次背诵1.今天上午，我们班在附近的公园组织了一次环保活动。_________________________________________________

5、___________________________2．一到达那里，我们就把此次活动分成了三部分。______________________________________3．首先，我们清理废纸、烟蒂、塑料袋等废弃物。______________________________________4．然后，我们树立了几块标牌，告诉游客要爱护花草树木。______________________________________5．我们向游客演讲，告诉他们“白色污染”的害处以及保护环境的重要性。________

6、____________________________________________________________________1.Thismorning，ourclassorganizedanenvironmentalprotectionactivityinthenearbypark.2．Onarrivingthere，wedividedthisactivityintothreeparts.Assoonas/Themoment/Theinstant/Immediately/Directlywear

7、rivedthere，wedividedthisactivityintothreeparts.Hardly/Scarcely/Rarelyhadwearrivedtherewhenwedividedthisactivityintothreeparts.Nosoonerhadwearrivedtherethanwedividedthisactivityintothreeparts.3．First，wecollectedtherubbish，suchaswastepaper，cigaretteends，plas

8、ticbagsandsoon.4．Thenwesetupseveralboardstoremindthevisitorstotakecareoftheflowersandtrees.5．Wegaveaspeechtothevisitorsonthedangerof“whitepollution”andtheimportanceofprotectingtheenvironment.StepⅡ不积小流，无以成江海。S