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课件网) Grammar Focus-4c 过去进行时 Past Progressive Tense unit 5 Unit 5 What were you doing when the rainstorm came Past progressive Tense 表示过去某个时刻正在进行的动作。 （或过去一段时间正在进行的动作） 含义:（概念） 2. 句子结构: be (was/were) + doing 即：主语 + was/were + doing sth. + 时间状语 They were playing basketball at 5 o’clock yesterdayafternoon. 昨天下午五点他们在打篮球。 例2: The barber was cutting my hair when they arrived. 他们到达时，理发师正在给我剪头发。 例4 She was writing a letter when I came in. 我进来时，她正在写信。 例3： 3. 时间状语:at 8 o’clock last night/this time yesterday /at 5:00 yesterday afternoon/at that time, then 等连用( 或者用另一动作来表示过去的时间) 例1: What were you doing at nine last night 昨晚九点你正在干什么？ ① 表示过去某个时刻正在进行的动作。 ②表示在过去某一时间内正在进行的动作。 Oral Practice What were they doing at 10:30 Last Monday They were running. 10:30 Last Monday What were they doing at yesterday afternoon They were playing football. Oral Practice yesterday afternoon Oral Practice What were you doing at 10: 10 yesterday morning I was going shopping. Oral Practice What were she doing at 9:00 last night She was sweeping the floor at that time. at 9:00 last night Oral Practice What was Tom doing at 7:30 this morning He was cooking breakfast at 7:30 this morning . Tom Oral Practice What were they doing from 8 to 9 last night They were talking on the phone from 8 to 9 last night. from 8 to 9 last night Grammar Focus 语法聚焦 when和while的用法区别 4.如果while前后的动词都是进行时态,while可译为“与此同时” 1.when 既指时间点，也可指一段时间; while只指一段时间. 2.when 说明从句的动作和主句的动作可以是同时，也可以是先后发生； while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。 3.“当…的时候”,如后面连接的动词为进行时态,则用while多于用when。而when通常与瞬间性动词或延续性不强的动词连用。 1.My mother was cooking dinner while my father was watching TV. 2.When the UFO landed, the boy was walking down the street. 3.=While the boy was walking down the street, the UFO landed 4.I was reading while my brother drawing. Exercises Choose “when” or “while” to fill in the blanks. (1)I was walking in the street _____ the accident happened. (2)_____ you have a meeting, you should turned off your mobile phone. (3)_____ you have PE class, you should wear sports shoes. (4)_____ I was doing my homework, the telephone rang. (5)_____ it was raining, the plane took off. (6)_____ the teacher was speaking to class, Nick stood up suddenly. when When When While While While 相同的过去时间可能会有不同时态 He wrote a letter last night and posted it this morning． （只说明他写了……的事实，动作已结束） He was writing a letter last night. （过程描写，他一直写……，不一定完成） 过去进行时着重描述当时正在持续进行的动作，它的特点是：暂时，持续和未完成，强调过程；一般过去时表示发生过的动作或存在的状态，即表示动作发生过，而且已经结束了，强调结果。 过去进行时 ... ...
