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Unit2OppositieworldLesson12Clean＆DirtyKelly&Class3,Grade32017.3.Let'sreviewit!Let'slistenandsingtogether.1

.Listenfirst.2.Thensingtogether.Whatoppositewordscanyou?open&closedirty&cleangood&badwet&drylong&shorti

n&outhot&coldfat&slimfew&manydark&lightgive&takefar&nearWhatoppositewordscanyoulearn?good&badin&outgive&takeMymomalwaysgives____T-shirtwi

thme.ButShealways____sthe____T_shirtback.Somymomthinksitis______toplay____side.ButIthinkitis_____toplay____side.Lesson12(Listenca

refully）音频）Lookanssay.(Part1）•A:Look,therearesomanyfishinthispond.B:Wonderful.Lookandsay(Part2)•Therear

enofishinthispond.Why,Mom??????Why?Be...causethispondis...Fishcan?cannot?liveindirtywater.Why?Becausethispondis...Fishcan?cannot?liveindirtywater.

Aboutourschool.Look,therearesomanyteachersandstudentsinour...Ourschoolisvery...Wecanstudyandplayinthisschool.Lookandread.WriteYesorNoonthe

line.（书P27）•(1)Thewaterinthepondisclean.•(2)Theriverisdirty.NOYesLookandread.WriteYesorNoontheline.•(3)Thewaterinthelakeisclean

.•(4)Thecloudsintheskyaredark.YesNoCleanup!!!Canyouunderstand“clean”?***•Manyanimalsliveinthewater.Theyneedcleanwater.Manyplantsgrowinthewater.T

heyneedcleanwater,too.Peoplealsoneedcleanwater.•Theyneedcleanwatertodrink,cook,andwash.？？drinkcookwash...dirty/cleanlivegood/bad•Somepeoplet

hrowtrash???intotheriverandlakes.•Theymakethewater_____.Thisis____.Animalsandplantscannot____ind___water.•WeshouldKeeptheriversandlakesc_______.d

irty/cleanlivegood/bad•Somepeoplethrowtrash???intotheriverandlakes.•Theymakethewaterdirty.Thisisbad.Animalsan

dplantscannotliveindirtywater.•WeshouldKeeptheriversandlakesclean.Weneedcleanwater.Wecareaboutcleanwater.Weprotectthecleanwater.Clean...songHome

work>PleasemakeaposterontheA4paper.>Letmorepeoplecareabouttheclean...together.Postersaboutclean&dirtyKeepyourselfalwaysclean!