What were you doing when the UFO arrived ?Unit 3What were you doing when ？ 当的时候，你正在干什么?当飞碟到达的时候,你正在干什么?用法 表示过去某个时刻或某个时间段内正 在进行的动作，译为“正在”结构was / were + v.-ing (肯定句)过去进行时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? I was sleeping.I was eating lunch.I was cutting hair.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 与 其他“在之前” : 当表示在建筑物的前面时，只能用in front of in front of “在的前面”1a1._I was in the bathroom.2._I was in my bedroom.3._I was in front of the library.4._I was in the kitchen.5._I was in my barber shop.6._I was in the barbers chair.dba c e f我在浴室(里)。我在卧室(里) 。我在图书馆前面(里) 。我在厨房(里) 。我在理发店(里) 。我（坐）在理发椅上 。What was she/he doing?她/他正在干什么？也许她/他正在 Maybe she/he was .1bListen and circle the correct responses.a. standing in front of the library / studying in the libraryb. cleaning my room /sleeping latec. making a smoothie /cooking dinnerd. getting out of the shower / talking on the phonee. eating lunch / cutting hairsleep late 睡到很晚，睡懒觉cook dinner 做饭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What was he doing when the UFO arrived? He was sleeping late when it arrived. What was she doing when the UFO arrived?(b)She was standing in front of the library.(a)What was he doing when the UFO arrived? He was cutting hair.(e)航空博物馆land on 在着陆54322b.1.The boy was walking down the street _ a UFO landed.2.The girl was shopping _ she saw the alien get out.3._ the alien was buying a souvenir, the girl called the police.4._ the alien was visiting the museum, the boy called the TV station.whenwhenWhileWhilewalk down the street 沿着街道走(下去) 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。 when 与 while 引导的从句进行时态分类现在进行时过去进行时用法表示说话时正在进行 的动作表示在过去某一时刻或某一 段时间内正在进行的动作肯定 句主语 + am/is/are + v.-ing + (其他).主语 + was/were + v.-ing + (其他).否定 句主语 + am/is/are + not + v.-ing + (其他).主语 + was/were + not + v.-ing + (其他).一般 疑问句Am/Is/Are +主语 + v.-ing + (其他)?Was/Were +主语 + v.-ing + (其他)?特殊 疑问句疑问词 + 一般疑问句疑问词 + 一般疑问句过去进行时一般过去时表示在过去某一时刻或某 一段时间内正在进行的动作表示发生在过去、结束了 的动作或状态主语 + was/were + v.-ing + (其他).主语 + v.过去式 + (其他).主语 + was/were + not + v.-ing + (其他).主语 + didnt + v.原 + (其他).Was/Were +主语 + v.-ing + (其他)?Did +主语 + v.原 + (其他)?疑问词 + 一般疑问句疑问词 + 一般疑问句过去时态分类用法肯定句否定句一般 疑问句特殊 疑问句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 that moment “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”，