高三英语 专题复习 unit 2 the environment（第4课时）教案 牛津译林版必修5

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1、Unit2Theenvironment课题Unit2Theenvironment课型复习课教学目标把握考点，规范写作重点重点词汇，句型2,4,6难点规范写作教法讲授法、讨论法、探究法教学过程教学内容个案调整教师主导活动学生主体活动ForthperiodProject1:ProtectingtheYangtzeRiverAsthethirdlongestriverintheworld,thehealthoftheYangtzeRiverhasraisedconcernbothinChinaandabroad.Rapiddevelopmentandanincrease

2、inpopulationhavemeantthattheamountofwatertakenfromtheriverisrising,andthewastebeingputbackintotheriverhasbeenincreasing.ThisisnotgoodnewsforthepeoplewhorelyontheYangtzeRiverforwater.Norisitgoodnewsforthewildrangeoffishandwildlifethatliveinoralongtheriver.Manypeoplehaverecognizedtheimp

3、ortanceofprotectingtheYangtzeRiver,andorganizationsandprojectshavebeensetuptodealwiththeproblem.TheGreenRiverorganization,forexample,educatespeopleontheimportanceofprotectingthisgreatriver.Italsowatchestheriverandstopstheillegalhuntingofanimals,whichhasputthewildanimalpopulationindang

4、er.Twospecialgovernmentprojectsarealsounderway.Thefirstproject,awaterandsoilconservationproject,wassetupin1989.Thisprojectresultedinfarmersreplacingtheircropswithtreesorgrass.Ithasalreadybeenasuccessbecauseithashelpedimprovethelocalenvironmentandthelandaroundtheriver.Thesecondprojecti

5、ncludesnaturereservesforwhite-flagdolphins,oneoftherarestanimalsintheworld.Thenumberofwhite-flagdolphinsinChinahasdroppedbecauseofpollutionintheYangtzeRiver.Thewhite-flagdolphinwaslastseenseveralyearsago,thoughscientistsarestillhopefulthattheanimalhassurvived.Westillhavealongwaytogoto

6、solvealltheproblemsinregardtotheYangtzeRiver.However,peoplehavefinallyrealizedthatitistheirresponsibilitytoprotectthisgreatriver.Becauseofthis,thesituationontheYangtzeRiverisimproving.TheeffortsoftheChinesegovernmentandpeopletoprotectthismuch-lovedriverwillbeappreciatedforyearstocome.

7、Project2:Climatechangeandalow-carbonlifeThereisnodoubtthattheworldclimatehasbeenchanginginrecentyears.Manypeopleblamethischangeongasessuchascarbondioxide.Animalsandhumansproducecarbondioxidewhentheybreathe.However,manyotherhumanactivitiesalsoletoffcarbongases.Anytimesomethingisburnt,c

8、arbon