過去進行時微課課件.ppt

1、過去進行時微課,岱岳區(qū)滿莊一中 李華,一、定義：過去某一時間正在進行的動作。,二、與現(xiàn)在進行時的異同：,現(xiàn)在進行時的構(gòu)成為： 主語 十助動詞am/is/are十動詞的現(xiàn)在分詞。,I was having dinner with my friends at this time yesterday.,You were having a math class at this time yesterday.,主語 十助動詞was (were)十動詞的現(xiàn)在分詞,三、構(gòu)成：,四、標志詞：,at this time yesterday , at that time, at five last Sunday

2、, the whole morning, all that day, then, last night,以及when, while引導(dǎo)的時間狀語從句。,五、用法,（一）、過去某一時刻正在進行或發(fā)生的動作。,當老師進來時你們正在干什么？ 老師進來時他正在讀書。他在讀書時，我在寫作業(yè)。,（二）、過去某個時間前后兩個動作是同時進行的。,For example:,What were you doing when the teacher came in？,He was reading books when the teacher came in .,While he was reading books

3、,I was doing my homework.,特別注意：when 與while 的區(qū)別,二者都有“當時”的意思，但while 后只能跟延續(xù)性動詞（即后面可加ing的動詞），而when 后既可跟延續(xù)性動詞，又可跟非延續(xù)性動詞，所有動詞均可。,（三）、描述一件事發(fā)生的背景，一個長動作發(fā)生時，另一個短動作在發(fā)生。,For example: My brother fell while he was riding a bike.,我哥哥騎自行車時，摔倒了。,It was snowing when he left school .,他離開學(xué)校時，天在下雪。,（四）、常與always連用，表埋怨、責(zé)怪

4、、表揚和喜歡等感情。,My father was always smoking when she was young.,我父親年輕時，總是抽煙。,I remembered She was often smiling when I talked to her.,我記得當我和她說話時經(jīng)常微笑。,For example:,Exercise,1.When I arrived at his office , he _on the phone. was talking B. talked C. talk D. talks 2.-I called you yesterday evening, but nobody answered the phone. -Oh, I_ a walk with my parents at that time. A. took B. was taking C. am talking D. take,3. They _ (在買衣服）when the UFO arrived. 4. What _ you_ when you _ the alarm? (當聽到警報的時候, 你在干什么?),were buying clothes,were,doing,heard,While,What were they