初中英语人教版八年级下册Section A Grammar focus 4a-4c13 课件

1、人教版八年级下册Unit 5What were you doing when the rainstorm came?Section A (Grammar Focus-4c) 洪洞县第二中学校 陈秋花Teaching aims1. Questions and statements with the past progressive tense2. Conjunctions When and While读下列句子, 总结出句子中包含的语法。What were you doing at eight last night?I was taking a shower.What was she doing

2、 at the time of the rainstorm?She was doing her homework.Guide OneGrammar FocusWhat was he doing when the rainstorm came?He was reading in the library when the rainstorm cameWhat was Ben doing when it began to rain heavily?When it began to rain, Ben was helping his mom make dinner.What was Jenny doi

3、ng while Linda wassleeping?While Linda was sleeping, Jenny was helping Mary with her homework.过去进行时1. 基本概念 过去进行时表示在过去某一时刻或一段时间内正在进行的动作。Summary2. 结构 肯定句：主语+was/ were + V-ing+其它 否定句： 主语 + wasnt/ werent + V-ing+其它 一般疑问句 Was/Were+ 主语+V-ing+其它? 特殊疑问句 疑问词+was/were+主语+V-ing?3.标志性时间 (1) at + 时间点 + 过去的时间 eg:

4、 at eight oclock yesterday (2) at this /that time+过去的时间 at this/that moment+过去的时间 eg: at this time last week(3) When 或 while引导的时间状语从句过去进行时中的when和whilewhen和while都可表示“当的时候，引导时间状语从句。你知道两者在过去进行时中的用法有什么不同吗？Guide Two I was walking to school when I saw a cat in a tree.When Sally arrived home, her mother wa

5、s cleaning the house. 主句的动作是持续性的，而从句动作是短暂性的，此时用_引导时间状语从句，主句用_时态，从句用一般过去时态。when过去进行 While I was sleeping in the bedroom, someone knocked at the door. David fell while he was riding his bike. 主句的动作是短暂性的，从句的动作是持续性的，此时用_引导从句，主句用_时态，从句用过去进行时态。while一般过去 While Andy was waiting for the bus, he was reading a

6、 newspaper. He was cleaning his car while I was cooking. 主句和从句的动作在过去的某时刻或某段时间同时发生，而且动作都是持续性的，此时用while引导从句，而且主句和从句都 过去进行时态。比较 “when” and “while” When my mother came in, I was watching TV. = While I was watching TV, my mother came in. eg: When the bus arrived, the boy was walking down the street. = Wh

7、ile the boy was walking down the street, the bus arrived .教师点拨从句的动作是短暂性主句的动作是延续性动词从句的动作为延续性主句的动作为短暂性活学活用4aLook at the table and write sentences with both while and when. John Mary take photos buy a drink play the piano leave the house clean his roomturn on the radio shop take the car to the car wash

8、延续性动词短暂性动词4bFill in the blanks with was, were, when or while.At 7:00 a.m., I woke up. _ I _ makingmy breakfast, my brother _ listening to the radio. _ I was eating, the radio news talked about a car accident near our home. My brother and I went out right away to have a look. _ we got to the place of

9、 the accident, the car _ in bad shape from hitting a tree. But luckily, the driver _ fine. The roads _ icy because of the heavy snow from the night before.While was wasWhile When waswaswereExercisesFill with “While” or “When”1._ Mary was talking on the phone, her sister walked in. 2._ lilei bought her new dog, it was wearing a little coat.3._ I saw liMing, he was wearing a green shirt.4._ I was dancing, he was singing loudly.5. _ Linda finally saw Davy , he was jumping with a dog .6