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）2. in the library在图书馆3. get out of/get into出之外/进入4. sleep late睡懒觉sleep well睡得好get to sleep=fall asleep睡着5. walk down/along沿走6. take off(飞机)起飞；脱下（衣帽）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
2、上用on）8. in the tree在树上on the tree在树上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和一样例如：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. walk home走回家15. in history在历史上16. for example例如17. in the city of在市18.
3、on the playground在操场上19. ten minutes ago十分钟前20. take place发生（强调必然性）21. happen to sth./sb. 发生（强调偶然性）例如：What has happened to you?=Whats the matter with you?=Whats wrong with you?22. of course=sure=certainly当然23. all over the world=around the world遍及全世界24. outside/inside the station在车站外/内25. next to相邻，
4、紧贴26. close to接近于；在附近27. be ill in hospital/bed生病住院/在床28. hear about/of听说（间接听到）29. in silence沉默不语keep silent 保持沉默30. an unusual experience一次不寻常的经历31. have fun doing sth 干某事有乐趣have difficult time doing sth干某事有困难32. have meaning to 对有意义 33. become the first Chinese astronaut in space成为中国第一个太空宇航员34. a national hero 一个民族英雄35. 35. be famous all over the world 全世界出名36. for the first time第一次
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