Unit 5 过去进行时 课件2021-2022学年人教版八年级英语下册 .pptx（纯ppt,可能不含音视频素材）

1、Past Continuous Tense过去进行时过去进行时概念概念构成构成现在分词变化规则现在分词变化规则时间状语时间状语过去进行时和一般过去时的区别过去进行时和一般过去时的区别过去进行时过去进行时概念：表示概念：表示过去某一时刻过去某一时刻正在进行的动作或正在进行的动作或过去某一阶段过去某一阶段一直进一直进行的动作。行的动作。通常句子一定会有一个通常句子一定会有一个“表示过去某个时间点表示过去某个时间点”的状语。的状语。概念概念概念概念1：表示过去在某一时刻正在进行的动作。：表示过去在某一时刻正在进行的动作。e.g.I was discussing my homework with my

2、 classmates at 9:00pm last night.概念概念过去的某一时刻过去的某一时刻概念概念2：表示过去某一阶段一直进行的动作。：表示过去某一阶段一直进行的动作。e.g.Jack was writing that story from 7 to 9 yesterday morning.过去的某一过去的某一阶段阶段概念概念 I was discussing my homework with my classmates at 9:00pm last night.Jack was writing that story from 7 to 9 yesterday morning.构成

3、构成：肯定句：肯定句：主语主语+was/were+现在分词现在分词+其他其他e.g.He was working last night.构成构成构成构成：否定句：否定句：主语主语+was/were+not+现在分词现在分词+其他其他e.g.He wasnt working last night.构成构成构成构成：疑问句：疑问句：Was/Were+主语主语+现在分词现在分词+其他？其他？e.g.Was he working last night?Were you watching TV yesterday night?构成构成造句：造句：1.昨天晚上七点我正在唱歌。昨天晚上七点我正在唱歌。_2.

4、昨天早上她们都在画画。昨天早上她们都在画画。_EXERCISEI was singging songs at 7:00 yesterday night.They were drawing pictures yesterday morning.1.I was singging songs at 7:00 yesterday night.否定句：否定句：_一般疑问句：一般疑问句：_2.She was washing the window when the telephone rang.否定句：否定句：_一般疑问句：一般疑问句：_EXERCISEI wasnt singing songs at 7:

5、00 yesterday night.Were you singing songs at 7:00 yeserday night?She wasnt washing the window when the telephone rang.Was she washing the window when the telephone rang?working、singing、discussing、drawing、writing、washing观察动词的变化，有什么共同点？观察动词的变化，有什么共同点？现在分词变化规则现在分词变化规则：1.一般情况下直接一般情况下直接v+ingwork-working、

6、do-doing、go-going现在分词变化规则现在分词变化规则现在分词变化规则现在分词变化规则：2.以不发音的以不发音的e结尾：去掉结尾的结尾：去掉结尾的e，再加，再加ingmove-moving、close-closing现在分词变化规则现在分词变化规则现在分词变化规则现在分词变化规则：3.以以ie结尾的动词，变结尾的动词，变ie为为y再加再加ingdie-dying、lie-lying现在分词变化规则现在分词变化规则现在分词变化规则现在分词变化规则：4.以重读闭音节结尾的动词，双写末尾的辅音字母再加以重读闭音节结尾的动词，双写末尾的辅音字母再加ingbegin-beginning、dr

7、op-dropping现在分词变化规则现在分词变化规则时间状语（标志词）时间状语（标志词）：标志词标志词at that time/moment.at that time of this time+过去时间：过去时间：when/whileyesterday at 5oock last nightfrom 7:00-9:00yesterday all night、all the moring特殊用法特殊用法进行时与进行时与always连用：连用：表示强烈的情感，如喜欢或者厌恶。表示强烈的情感，如喜欢或者厌恶。e.g.They were always talking。e.g.He was alway

8、s messing up the kitchen.when:at or during the time表示短时间的动作，主句常用表示短时间的动作，主句常用进行时态进行时态E.g.The boy was playing in the playground when the earthquake hit the city.When the boy was playing ing the playground,he found a kid was crying.when/while区分区分while:during the time 连接两个动词表示过去的两个动作同时进行。连接两个动词表示过去的两个动

9、作同时进行。E.g.While the boy was playing ing the playground,he found a kid was crying.when/while区分区分1.He _(do)his homework at eight last night.2.They _(have)a maths lesson at this time yesterday.3.Mary _(write)a letter last night.4.When the teacher _(come)in,they _(talk)loudly at that time.5.My mom_(wash

10、)dishes while my father _(read)books yesterday night.EXERCISEwas doingwere havingwas writingcame were talkingwas washingwas reading1.概念不同概念不同过去进行时：动作再过去的某个时间正在进行，可能完成，也可能没完成。过去进行时：动作再过去的某个时间正在进行，可能完成，也可能没完成。Mary was writng a letter last night.（玛丽昨晚整晚都在写（玛丽昨晚整晚都在写信。）信。）一般过去时：表示动作或者状态已经结束。一般过去时：表示动作或者

11、状态已经结束。Mary wrote a letter last night.（玛丽昨晚写了封信。）玛丽昨晚写了封信。）过去进行时过去进行时VS一般过去时一般过去时1.He _(not work)at that time.2._he _(study)English from 7to 9last night?3.His mother _(return)while he_(do)his homework.4.She _ her homework this time yesterday.5._you _(have)a good time last Sunday?EXERCISEwasnt workingWas studyingreturned was doingwas doing Did haveThanks for watching！谢谢观看！谢谢观看！