人教版八年级下册英语第六单元学案学习目标知识目标：1.单词collect , shell, skate, pair, since, raise, several, skater2.掌握句型：How long have you been skating?Ive been skating for five hours.Ive been skating since nine hours.Ive been skating since Iwas seven years old.-How long did you skate?-I skated for two hours.-What sport do you play?-Tennis.-When did you start?-When I was eleven.学习重点：单词和重点句型学习难点：区别不同点：1.“for” and“since”2.“How long have you been skating?”And “ H
