新课标人教版课件系列高中英语选修( 模块）9-5.4Unit 5 words and expressionLeacross 偶然遇见; 偶然发现。Ivejustcomeacrossoneofyourformerclassmates.表示“见到；碰到”的词组：runintobumpintonoticediscoverencounter2.casual非正式的; 不经意的; 不在乎的casualclothes 便装acasualmanner 漫不经心的样子Theyhaveacasualattitudetowardssafety.3.Withsomanymessagesfromadvertisersfillingourdailylives,itisimportanttounderstandhowadvertisementswork. 独立主格结构,作状语) 。Whenthesunhadset,wearrivedatasmallvillage.Thesunhavingset,.Astheproblemwassolved,theywentbacktowork.Theproblemsolved,.
