【導(dǎo)讀】1.Learnnewwords.(shouldn’t,should,waste,enough,world,save,2.Learnthetext.(keeptheriversclean,keeptheaircleanand. Readthetext.Whatareyoudoing?Weshouldn’twastewater.Why?Youneedwater.Weshouldn’twastewater.Weshouldn’tkillwildanimals.Unit8Weshouldn’twastewater.1.Reviewthewords.(plantmoretrees,wasterwater,keepther. 2.Reviewthetext.Step1:Readandfind.doesMrZhougotowork?TalkaboutPartD.“shouldn’t”.