学生自学生词,并记住单词拼写和拼读
预习课本,找出重点短语和句式
读、记后完成学案中自学导练作业
Step1情景导入Theteachershowaphotoofpollutedriver
T:Whatcanyouseeinthephoto
S1:Icanseepollutedwater
S2:Icanseeadeadriver
Therearenoplants,nofishorlivingthings
T:Pollutionisveryserious
Pollutionisadangertoourhealth
Wemustdosomethingtosaveourearth
S2:Whatcanwedoforit
T:Wecancollectwastepaperorrubbishwhichcanberecycledorusedagain
Wecanalsoturnofflightstosaveenergywhenwedon\'tusethem…Ss:That\'seasy
Wewilldothem
Step2完成教材Activities1~3的任务1
Workinpairs
Lookatthepicturesandtalkaboutthem
Usethewordsintheboxtohelpyou
(Activity1)(1)处理生词
教师可以领读方框中的词,并让学生试着用这些单词描述图片
(2)学生活动:学生利用已有词汇和方框中的单词描述图片,然后教师引导学生自由发挥,谈论有关污染的问题
教师可以通过提问引导学生用相关词汇问答问题例如:Whatmaycausepollution
Howdomanyofthefactoriespollutetheairandrivers
(3)教师请学生展示
Listenandcompletethesentences