过去进行时微课课件.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,过去进行时微课,岱岳区满庄一中 李华,一、,定义,：过去某一时间正在进行的动作。,二、,与现在进行时的异同,：,现在进行时的构成为：,主语 十助动词,am/is/are,十动词的现在分词。,I,was,having,dinner,with my friends at this time yesterday.,You,were,having,a math class at this time yesterday.,主语,十助动词,was(were),十,动词的现在分词,三、,构成,：,四、,标志词,：,at this time yesterday,at that time,at five last Sunday,the whole morning,all that day,then,last night,以及,when,while,引导的时间状语从句。,五、用法,（一）、过去某一时刻正在进行或发生的动作。,当老师进来时你们正在干什么？,老师进来时他正在读书。他在读书时，我在写作业。,（二）、过去某个时间前后两个动作是同时进行的。,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,I was doing my homework,.,特别注意,：,when,与,while,的区别,二者都有“当,时”的意思，但,while,后只能跟延续性动词（即后面可加,ing,的动词），而,when,后既可跟延续性动词，又可跟非延续性动词，所有动词均可。,（三）、描述一件事发生的背景，一个长动作发生时，另一个短动作在发生。,For example:,My brother fell while he was riding a bike.,我哥哥骑自行车时，摔倒了。,It was snowing when he left school.,他离开学校时，天在下雪。,（四）、常与,always,连用，表埋怨、责怪、表扬和喜欢等感情。,My father was always smoking when she was young.,我父亲年轻时，总是抽烟。,I remembered She was often smiling when I talked to her.,我记得当我和她说话时经常微笑。,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 _(,在买衣服）,when the UFO arrived.,4.What _ you_ when you _ the alarm?(,当听到警报的时候,你在干什么,?),were buying clothes,were,doing,heard,While,What were they doing yesterday afternoon?,He was playing basketball,while,she was sleeping.,