3、dLeadingin1.EnjoyanEnglishsong:Ifyouarehappy2.Asksomequestions.Ifyouarehappy,whatwillyoudo?IfIamhappy,Iwillsmile.Ifyoubecomesad,whatwillyoudo?IfI becomesad,I will cry...(在轻松的英语歌曲中进入课堂,让学生进入愉快的身心准备状态,同时为引出新课作好铺垫。)Step2.Presentation1.Showsomepicturestopresentnewstructure: