What were you doing when the UFO arrived ?

1. 过去进行时 Unit 3 What were you doing when the UFO arrived ? 当飞碟到达的时候,你正在干什么? 试用过去进行时翻译下列句子： 你正在干什么？ 我正在睡觉。 我正在吃午饭。 我正在剪头发。 What were you doing when … ？ 当…的时候，你正在干什么? What were you doing? I was sleeping. I was eating lunch. I was cutting hair.

2. 那么，当飞碟到达的时候你正在干什么？ 噢，我正站在图书馆前面。 in front of “在…的前面” in front of 与 其他“在…之前” : 当表示在建筑物的前面时，只能用in front of

3. 1a 1.__I was in the bathroom. d 我在浴室(里)。 我在卧室(里)。 2.__I was in my bedroom. b a 我在图书馆前面(里)。 3.__I was in front of the library. c 我在厨房(里)。 4.__I was in the kitchen. e 我在理发店(里)。 5.__I was in my barber shop. f 6.__I was in the barber’s chair. 我（坐）在理发椅上。

4. 她/他正在干什么？ What was she/he doing? 也许她/他正在…… Maybe she/he was ….

5. 1b Listen and circle the correct responses. • standing in front of the library / studying in the library sleep late 睡到很晚，睡懒觉 b. cleaning my room /sleeping late cook dinner 做饭 c. making a smoothie /cooking dinner d. getting out of the shower / talking on the phone get out 出去；离开 get out of 从…出来 get out of the shower 洗完澡(出来) on the phone = on the telephone talk on the phone 通过电话交谈 e. eating lunch / cutting hair

6. What was he doing when the UFO arrived? (b) He was sleeping late when it arrived. What was she doing when the UFO arrived? (a) She was standing in front of the library. What was he doing when the UFO arrived? (e) He was cutting hair.

7. 航空博物馆 5 4 land on 在……着陆 3 2

8. 2b. • The boy was walking down the street ______ a UFO landed. • The girl was shopping ______ she saw the alien get out. • ______ the alien was buying a souvenir, the girl called the police. • ______ the alien was visiting the museum, the boy called the TV station. walk down the street 沿着街道走(下去) when when While While

9. when 与 while 引导的从句 • 1. when可指时间点，又可指时间段，从句中可用延续性动词，也可用非延续性动词。 • 2. while总是指一个时间段，从句中必须用延续性动词，谓语一般用进行时。 • 3.统一时态：主句过去式， 从句也是过去式。

12. 选择一般过去时和过去现在时的快捷方法: 留意句中的时间状语 常与一般过去时的时间状语有: just now “刚才”, … ago “…之前”, yesterday “昨天”, last … “上一次…”, 表示过去的时间状语从句 常与过去进行时的时间状语有: at thatmoment “在那时”, (at) this time + 过去的时间 “在…的这个时间”, at+钟点+过去的时间 “在…的…点钟”，