Unit 5 现在进行时与过去进行时课件2022-2023学年人教版八年级英语下册

现在进行时VS过去进行时 现在进行时讲解 一、定义： 表示此时此刻正在进行或发生的动作 二、常见时间状语： now；at this time/moment;Look! Listen！等 三、用法： 1.表示此时此刻正在进行或发生的事。 eg: We are having English class (now). 2.表示即将要发生的动作。 eg: The bus is coimg. 3.表示一种强烈的感情色彩。 eg: He is always hating exercising. 四、基本句型： 1. 肯定句：主+am/is/are+v-ing+其他。 I am doing my homework now. 2. 否定句： 主+am/is/are not+v-ing+其他。 He isn’t washing clothes now. 3. 一般疑问句：Is/Are+主语+v-ing+其他？ 肯定回答： Yes, 主语+am/is/are. 否定回答：No, 主语+is't/aren't. /am not (注意am not 不能缩写) —Is your mother cooking? — Yes, she is. / she isn’t. 4. 特殊疑问句： 特殊疑问句+一般疑问句？ What are you doing now?  五、现在分词的基本构成： 1) 一般动词在词尾加-ing, 如 go--going。 2) 以不发音字母e结尾的动词, 先去掉e, 再加-ing。 come--coming   make--making   write--writing 3) 以重读闭音节结尾的动词, 如果末尾以一个 辅音字母结尾, 应先双写这个字母, 再加ing， x和w结尾的除外。 如: get--getting    swim--swimming  show--showing 4）以ie结尾的，改ie为y，再加ing。 如： lie--lying die--dying 5 及时演练：   1. ---What _________ at nine o’clock? ---I ________ with my friends. A.is you; am hanging out B.are you;am hanging out C.am you; am hanging out D.are you; hang out 2.Look! There are some boys________ basketball on the playground. A. are playing B.played C.is playing D.play 3.---Is your mother cooking? ---No, she ________ dishes. A.is doing B.is making C.are doing 过去进行时讲解 一、概念: 表示过去某一时刻或某段时间内正进行的动作。 二、时间状语: at 8 last night, at this time，at that time, at that moment this time yesterdaywhile与when引导的时间状语从句的 主从复合句的主句和从句中。 e.g. What were you doing at 10 yesterday morning? I was writing a letter to my father at that moment. 8 三、用法： 1. 表示过去某个时刻正在进行的动作。 He was singing at six last night. 2. 表示过去某段时间内的连续性动作。 They were watching a football game from 7 to 9 last night. 3.过去一个动作发生时，另一个动作正在进行中。 I was giving a report when you rang me. 4.过去时间里两件事同时发生。两件事同时发生，一般用while表示“当…时候”（不要用when） While Mr. White was reading the newspaper, his wife was preparing the dinner. 四、基本句型： 1. 肯定句：主+was/were+v-ing+其他。 I was doing my homework when the rainstorm came. 2. 否定句： 主