1、【5A】人教版英语九年级上册第六单元全套课件Unit6When was it invented?Unit6When was it invented?1.Focus2.SectionA-13.SectionA-24.SectionA-35.SectionB-16.SectionB-27.SelfCheck8.wordsandexpressions(单击上面课题进入对应幻灯片)8/6/20213Unit6SectionAGrammarFocusReviewTranslatethephrases.sp