选修6立体设计立体设计走进新课堂走进新课堂选修6立体设计立体设计走进新课堂走进新课堂话题SmallTalk(闲谈)功能Talkingaboutobligationorlackofobligation(谈论“有义务”和“无义务”)语法Didntneedtodoandneednthavedone(没必要做与本没必要做)重点词汇及拓展1.informaladj.非正式的2.seriousadj.严肃的3.lackv.缺乏;缺少4.opportunityn.机会5.favourn.恩惠;照顾6.replyn.回答;答复;回信7.shortcomingn.缺点...