Unit 5What were you doing when the rainstorm came 第3课时 Section A (Grammar Focus)-（教学课件）2022春【鸿鹄志·名师测控】八年级下册初二英语（人教版）襄阳专版

人教版·八年级下册 英语 Unit 5　What were you doing when the rainstorm came Section A Grammar Focus－4c 情景导入 Where are you? I am in the classroom. What are you doing? I am answering your questions. 生成新知 Grammar Focus 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 began to rain heavily? When it began 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. 过去进行时 定义： 表示过去某个时刻或某一时间段正在进行或发 生的动作。 时间标志词： at this/that time yesterday, at 9:00 yesterday morning, all night等； 或以when, while 引导的时间状语从句。 构成： 基本结构：主语+was/were + doing +其他。 否定形式：主语+wasn’t/weren’t +doing+其他。 一般疑问句：Was/Were+主语+doing+其他？ 肯定回答：Yes, 主语+was/were. 否定回答：No, 主语+wasn’t/weren’t. 特殊疑问句：特殊疑问词+ was/were +主语 +doing+其他？ 以when和while引导的时间状语从句 1.延续性动词和非延续性动词 延续性动词指动作可以延续一段时间, 而不是瞬间结束。    如: work、study、drink、eat等。 非延续性动词指动作极为短暂，瞬间结束。 如: start、begin、hit、jump、knock等。 2.在本单元中，出现了以when和while引导的时间状语从句。 when表示“当……的时候”。从句中既可用延续性动词，又可用非延续性动词，这些动词既可以表示动作，又可表示状态。从句中动作既可和主句的动作同时发生，又可在主句的动作之前或之后发生。 如： Mary was having dinner when I saw her. The boy was still sleeping when his mother got home yesterday morning. 3.while表示“在……的时候”、“在……期间”。 它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。While从句中必须是表示动作或状态的延续性动词。 如： The weather was fine while we were in Beijing. She called while I was out. 现在分词的构成 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 字母结尾，应先双写这个字母，再加ing，x和w结尾 的除外。 get — getting    swim — swimming  show — showing 4.以字母y结尾的单词，直接加ing。如：     carrying playing studying 5.以字母ie结尾的动词，变ie为y，再加ing。    die → dying             lie →lying 6.以元音字母加