Unit 5 SectionA Grammar Focus-4c课件-人教版八年级下册英语.pptx

John LennonJealous GuyI was dreaming of the past And my heart was beating fast.I began to lose control.人教版八年级下册Unit 5 What were you doing when the rainstorm came?Section A Grammar-4c过去进行时（语法课）Learning aims1.To learn to use Past Progressive TenseV ing2.To learn to summarize the usages of when/whileLead-in结构现在进行时主+am/is/are+doing肯定形式I am watching TV.主+am/is/are+not+doingShe isnt elaying basketball.否定形式Is lisa reading now?般疑问句形式is/are+主语+doing?What are you doing now?特殊疑问句形式 疑问词+is/are+主语+doing?现在进行时 She is drinking water.He is singing.They are dancing.过去进行时She was drinking water.He was singing.They were dancing.Grammar Focus1.过去进行时：was/were+V-ing2.when,while引导的时间状语从句。What were you doing at eight last night?I was taking a shower.What was she doing at the time of the rainstorm?She was doing her homework-What was he doing when the rainstorm came?He was reading in the library when the rainstorm came.What was Ben doing when it begin to rain heavily?When it begin to rain,Ben was helping his mom make dinner.What was Jenny doing while Linda was sleeping?While Linda was sleeping,Jenny was helping Mary with her homework.My parents were watching TV at 8:00 last night.I was leaving for Beijing that day.I was taking a shower at that time.They were swimming in the swimming pool this time last week.When you called,!was taking a shower.While you were sleeping,!called Jenny and she helped me.TaskWhen和While引导的时间状语从句共同点不同点when都可以引导时间状语从 句，意为“当.的时候,，引导时间状语从句时，既可以表示时间点，也可以表示时间段；从句中的谓语动词 既可以是非延续性动词，也可以是 延续性动词.（多用于过去时态）while引导时间状语从句时，从句只表示时间段；从句中的谓语动词必须用延续性动 词。（多用于进行时态）延续性动词表示能够延续的动作。sing、wait、watch等非延续性动 词（短暂性）表示行为的结果，动作发生后就 立即结束。open、begin等过去进行时和when连用When I arrived at school，Lily was cleaning the classroom.原 主句The students were reading books when the teschcr came in.主句 从句A was/were+doing sth when B+did sth.长时动作 短时动作过去进行时和while连用While Tom was playing Ping-Pong,the bell rang.从句主句I fell while I was running at the playground.主句从句A did+sth while B+was/were+doing sth短时动作长时动作主句：一般过去时从句：过去进行时（while+延续性动词）过去进行时和while连用2My mother was cooking while my father was watching TV.长时动作主句 从句A was/were+doing sth while B+was/were+doing sth长时动作While Amy was sleeping,Tom was doing his homewor 从句 主句when VS while1.While she was talking on the phone,her sister walked in.2.When I found my dog,it was playing with another dog.3.When I got homemother was cooking.4.While I was readinghe was writing quickly.SummaryHomework1.To make a mind map.(制作一张思维导图)2.Rec ite grammar-focus.(Group A and B)