解读“过去进行时”

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  请看下面几道中考题:
  1. —What were you doing this time yesterday?
   —I ________ on the grass and drawing a picture.(2011年,北京市)
  A. sit B. sat C. am sitting D. was sitting
  2. —I called you at 4:00 yesterday afternoon,but no one answered.
   —Sorry,I ________ with my friends at that time. (2011年,河南省)
  A. swim B. swam C. will swim D. was swimming
  3. I was very angry with John——he just _________ when I spoke to him. (2011年,江苏省徐州市)
  A. isn’t listening B. hasn’t listened
  C. didn’t listen D. wasn’t listening
  4. The girl with two cats ________ in the yard when the earthquake happened. (2011年,内蒙古自治区呼和浩特市)
  A. was playing B. is playing
  C. are playing D. were playing
  5. I ________ when the UFO landed. (2011年,四川省宜宾市)
  A. am watching TV B. was watching TV
  C. have watched TV D. watched TV
  分析:上面的五道中考题均是在考查同学们对过去进行时用法的掌握情况,答案分别为: 1. D; 2. D; 3. D; 4. A; 5. B。
  英语中,过去进行时是初中生必须掌握的重要语法项目之一,掌握它的用法对于同学们学好英语具有重要意义,我们绝不可等闲视之。
  一、过去进行时的构成形式
  1. 过去进行时由“助动词was/were 现在分词”构成。如:
  When I was watering the flowers in the garden,it began to rain.我正在花园里浇花时,天开始下起雨来。
  We were having dinner when the phone rang.我们正在吃晚饭时电话响了。
  2. 过去进行时的否定式由“was/were not 现在分词”构成。如:
  The students weren’t reading English when the teacher came into the classroom. 老师走进教室时,学生们没在读英语。
  This time yesterday Jack was not watching TV. He was repairing his bike. 昨天这个时候,杰克不是在看电视,而是在修理自行车。
  3. 过去进行时的疑问式由“Was/Were 主语 现在分词?”构成。如:
  Were you playing basketball at four yesterday afternoon? 昨天下午四点钟你们正在打篮球吗?
  Was Sandy doing homework at eight yesterday evening? 桑迪昨天晚上八点钟正在做作业吗?
  二、过去进行时的基本用法
  1. 表示过去某一时刻正在发生或进行的动作,常与at eight yesterday evening、at this time last year、at that time等表示过去的时间状语连用。如:
  We were working on a farm at this time last year.去年这个时候我们正在农场干活。
  What were you doing at this time yesterday? 昨天这个时候你在干什么?
  2. 表示过去某一段时间正在进行或发生的动作,常与the whole night、from 8:00 to 10:00 yesterday morning等表示过去一段时间的状语连用。如:
  I was doing my homework at home from eight to nine yesterday morning. 昨天上午八点到九点我正在家里做作业。
  What were you doing from nine to eleven last Sunday morning? 上星期天上午九点至十一点你正在干什么?
  3. go、come、start、leave等位移动词用过去进行时表示过去将来的动作,通常指计划或安排某时将要发生的动作。如:
  Mr. Brown told us he was leaving there soon. 布朗先生告诉我们他很快就会离开那儿。
  Tom said he was coming to see his friend. 汤姆说他要去看望朋友。
  4. 与频度副词always连用表示过去经常反复的动作,常常有埋怨、讨厌、赞扬或喜爱等感情,意为老是、总是。如:
  My son was always forgetting things. 我的儿子总是丢三落四。(表示埋怨)
  He was always helping others. 他总是帮助他人。(表示赞扬)
  5. 过去进行时有时要依据上下文的语境来确定动词的时态,这是近年来命题的热点。如:
  —You were out when I dropped in at your house yesterday. 我昨天去你家看你时你不在。
  —Oh,I was waiting for a friend from Beijing at the train station.噢,我在火车站等北京来的一个朋友。
  三、过去进行时与一般过去时的区别
  一般过去时表示过去发生的一个单纯事实,多侧重于动作的完成;过去进行时表示过去某时间或某一时刻正在进行或发生的动作,强调动作的进程和发展,但不一定完成。试体会:
  She wrote an e-mail to her friend last night. 昨晚她给朋友写了封电子邮件。(说明“邮件已写完”)
  She was writing an e-mail to her friend last night. 昨晚她一直在给朋友写电子邮件。(含有“邮件不一定写完”之意)
  四、过去进行时中的when与while的区别
  when与while从句都可与过去进行时的谓语动词连用,但它们之间是有区别的。when引导的时间状语从句与过去进行时连用时,指“当一个动作发生时,另一个动作正在进行”,从句中的谓语动词可以是延续性动词,也可以是非延续性动词,从句的动作既可和主句的动作同时发生,又可以在主句动作之前或之后发生;while引导的时间状语从句与过去进行时连用时,指“主句和从句的动作正在同时进行”,但从句的谓语动词必须是延续性动词。如:
  When my father came in,I was reading. 爸爸进来的时候,我正在读书。
  You were dancing while I was singing. 我在唱歌时,你在跳舞。
  【学以致用】
  用括号内所给动词的适当形式填空。
  1. It _____ (rain) when they ______ (leave)the station.
  2. When they ________(get)to the top of the mountain,the sun ________(shine).
  3. While he ________(wait) for the bus,he ________(read) a newspaper.
  4. When I _________(come) to see you yesterday you _______(speak) to the teacher.
  5. —Come in,Peter. I want to show you something.
  —Oh,how nice of you! I never _______(think) you _______(go)to bring me a gift.
  6. Mary _______(do) her homework this time yesterday.
  7. The Greens __________(have) supper when the phone_______ (ring).
  8. He ______(do) some cooking at that time,so he _______(not hear)me.
  
  Keys:
  1. was raining;left 2. got;was shining
  3. was waiting;was reading 4. came;were speaking
  5. thought;were going 6. was doing
  7. were having;rang 8. was doing;didn’t hear
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