1、1.Unit 3 What were you doing when the UFO arrived?1.in front of 在……的前面（外部） in the front of在……的前面（内部） eg.Infrontoflibrary在图书馆外lnthefeontoflibrary在图书馆内2.in the library 在图书馆 3.get out of/get into 出……之外/进入4.sleep l
2、ate 睡懒觉 sleep well睡得好 get to sleep睡着 5.walk down/along 沿……走 6.take off (飞机)起飞；脱下（衣帽） eg.Takeoffyourcloches脱下你的衣服7.on Sunday evening在星期日晚上 注意:（特指某日如星期、假日、某月某日或某个特定的上、下午、晚上用on其他都用in） 8.in the tree在树上
3、 9.take photos 照相 10.at the train station在火车站 11.run away跑开，逃跑 12.as+adj原形as 和…一样… eg：She is (not) as beautiful as her sister. I can run as fast as he(him) 13.buy/draw/make sth. for sb. 为某人买/画/制作 14.w
4、alk home 走回家 15.in history 在历史上 16.for example例如 17.in the city of 在……市 18.on the playground 在操场上 19.ten minutes ago 十分钟前20.takeplace发生（强调必然性）happentosth.sb.发生（强调偶
5、然性）例如：What has happened to you?=What’s the matter with you?=What’s wrong with you? 21.of course=sure=certainly 当然 22.all over the world=around the world 遍及全世界 23.outside/inside the station 在车站外/内 24.next to 相邻，紧贴 close
6、to 接近于；在附近 25.be ill in hospital/bed 生病住院/在床 26.hear about/of 听说（间接听到） 27.in silence 沉默不语 本单元目标句型: What were you doing when I arrived/at that time/at 8:00 last night/from 9:00 to 10:00 yesterday? 1. I was doing sth. When+一般过去时的时间状
7、语从句... 2. How about... / What about...? 3. While sth./sb. was doing sth., I was doing sth.... 4. 当不明飞行物着陆时，你正在干什么？What were you doing when the UFO landed? 5. 当妈妈正在做饭时，我在看电视。While my mother was cooking ,I was watching T
8、V. 本单元语法讲解 过去进行时（Past Progressive Tense）句型 S + was/were +V-ing… 例A：She was doing her homework at 8:30 yesterday evening. （昨天傍晚八点半她正在做家庭作业。） 例B：We were having supper at that time. （那个时候我们正在吃晚饭。） 解说 如例1所示，在单句中使用过去进行时来表达时必须把该动作正在进行中的时间表明清楚，否则就不合逻
