Unit 2 听，并跟读下列单词1sir n. 先生；长官2officer n. 军官；官员；警察3stupid adj. 笨的；糊涂的4jacket n. 短上衣；夹克 听，并跟读下列短语1on the station platform 在车站站台上2say goodbye to sb. 向某人道别3take care (告别用语)多保重4get on the train 上火车5a ticket officer 检票员6an elderly man 一位老人/一个上了年纪的人7have a look at 看一看8wait a moment 等一会儿9take ones seat 坐某人的座位10be surprised to do sth. 吃惊地做某事11a long journey 长途旅行12take off 脱去；(飞机)起飞13make oneself comfortable 使某人舒服 听，并跟读下列句子1See you!Take care. Bye!“再见！”“再见，保重！”2Im afraid you are sitting in my seat. 恐怕你坐了我的座位。3Here it is. 给你。4Excuse me, is this Seat 12A? 打扰了，这是12A座吗？5How stupid of me! 我真蠢啊！6Thats very good of you! 你真是太好了！7What a surprise! 真是个惊喜！8Its great to see you. 见到你真是太好了。9Oh, its a long story哦，说来话长3