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过去进行时(一)定义1.过去进行时表示在过去某一时刻正在进行的动作2.过去进行时表示在过去某一段时间里正在进行的动作.(延续性动作)(二)一般结构 was /were+ V-ing.(三) 标志词：1.atthat time, 2.at this/that time yesterday (last night/Sunday/week ), 3.at+ 点钟 +yesterday (last night / Sunday ) ，4.有从句when sb/sth. did sth. last evening5. the whole morning, all day , from nine to ten, while等。例如：I was making fruit salad at this time. They were studying from 8:00 to 11:00 yesterday.（四）一般过去时的肯定句、否定句、疑问句及简略回答。 1. 肯定句: 主语+was/were+V-ing+其它. I was watching TV at that time last night.2. 否定句: 主语+was/were+not+V-ing+其它. I was watching TV at that time last night.I was not watching TV at that time last night.3.一般疑问句：was/were主语+V-ing+其它?I was watching TV at that time last night.Were you watching TV at that time last night?肯定回答：Yes, I was.否定回答：No, I wasnt.4. 特殊问句: 疑问词was/were主语+V-ing+其它? I was watching TV at that time last night.What were you doing at at that time last night?(五) 基本用法：1. 过去进行时表示在过去某个时间点发生的动作或事情。(用介词短语和从句来表示时间点)I was sleeping at this time last Sunday.(过去某一时刻)My mother was cooking dinner at 9:00 yesterday. (过去某一时刻)We were having supper when Tom came in.我们正在吃晚饭时电话响了（从句表示时间点）2. 过去进行时表示在过去某段时间内持续发生动作或事情。 （the whole morning, all day , from nine to ten, while, when等。）Lucy was working all day. （过去某一段时间）We were watching Tv from seven oclock to nine oclock last night.3.在复合从句中，从句和主句的动作都是延续性或同时发生，那么主从句都要过去进行时。 While he was waiting for the bus , he was resding newspaper. 他边等车边看报。（两个动作都是延续的） He was cleaning his car while I was cooking. 他洗车时我在做饭。（两个动作同时进行）（六）when 和while的用法区别when既指时间点，也可指一段时间。因此when在状语从句中的动词可以终止性动词，也可以是延续性动词 while只指一段时间。while从句中的动词必须是延续性动词。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。 when引导的时间状语从句。后用一般过去时。While后面一般用过去进行时。如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，a.When the teacher came in, we were talking.=While we were talking, the teacher came in. b.They were singing while we were dancing.过去进行时专项练习1.I _at 8:00 yesterday. A. was sleeping late B. slept late C. sleep late2.They _at this time.A. talking on the phone B.were talking on the phone B. was talking on the phone3.Lily was standing in front of the library _.A. two hours ago B. tomorrow C. at that time yesterday4.I _ when the UFO arrived?A. was cutting hair B.was cutting hair C. cutting hair5.My father was reading newspaper _my mother was cooking dinner.A. when B.while C. what6. My brother _ while he _ his bicycle and hurt himself.A. fell, was riding B. fell, were riding C.fell, rode 7. I first met Lisa three years ago. She _ at a radio shop at the time. A.worked B. was working . is working 8.-what were you doing at seven oclock last Sunday? -I _ the shower.A. was getting out of B. got out of C.was get out of9. I _ my breakfast when the bell rang. A. had B. was having C.am having10 The reporter said that the UFO _ east to west when he saw it. A. was traveling B. traveled C. traveling 11. - What s the matter, Ali? You look sad.” -Oh, nothing much. in fact, I _ of my friends back home. A. just thought B. have just been thinking C. was just thinking 12.What_from three to four yesterday afernoon? A.have you done B.did you do C.were you doing13.-I called you yesterday evening.but there was no anwer. -Oh, I m sorry I _dinner at my friends home. A.had B. was having C.have14.My mother _while my father_TV.A. cooked, was watching B. was cooking, was watching C. cooked, watched15.when I got home, my son_the music.A. am listening B. listened to C.was listening二、动词填空。1.John_（work）all day yesterday.2.He _（walk）home when the rain_（begin）.3.-What_you _（do） at ten oclock yesterday-I_（study） in class4. While Harry _（have）breakfast, Lily telephoned him 5. I _ (write) a letter at t en last night.6. It was six. The Greens _ (have) supper.7. When you _(knock) at the door yesterday,I _(do) some washing. 8. While my mother _ (watch) TV, I _(make) a kite.9. _you _(feed) the animals at 5:00 yesterday afternoon?10. Mrs Green_(not wash) clothes at this time last Saturday.三、按要求改写句子。1.I was getting out of bed when the UFO landed. （对划线部分提问） _ _ you _ when the UFO landed?2. They played tennis yesterday afternoon.(用at 5:00 yesterday afternoon改写句子) They _ _ tennis at 5:00 yesterday afternoon.3. While it was raining ,the plane took off.（改为同义句）It was raining _ the plane _ off.4. 昨晚八点钟我爸爸在看报纸。My father _ _ a newspaper at 8:00 yesterday evening.5. 电话响时，我妈妈在做晚饭。My mother _ _ _ when the phone_.6. 当外星人买纪念品时，我报了警。_ the alien was buying a suvenir ,I _ the police.7.I was washing my shoes at that time.（改为一般问句） _ _ _ your shoes at that time?
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