Unit 5 Section A 4a～4c 课件 -2023-2024学年人教版英语八年级下册

Section A Grammar focus - 4c Unit 5 What were you doing when the rainstorm came? When I … He was doing … When I called him up, he was sleeping. Make up the sentences. While I … He was doing … While I was walking to school, he was eating breakfast. When I … He was doing … When/While I was reading the newspaper, he was watching TV. 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. 读下列句子, 你能总结出句子中包含的语法吗？ 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. 过去进行时的疑问式 I wasn’t having an English class at this time yesterday. 过去进行时的否定式 Were you having an English class at this time? 过去进行时 . 含义： 表示过去某个时刻正在进行的动作。 结构： was/were + doing 例句：I was having an English class at this time yesterday 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。  总结  1) when可指时间点, 又可指时间段, 从句中 可用延续性动词, 也可用非延续性动词。  2) while总是指一个时间段, 从句中必须用延 续性动词。 3.你会用when 和while了吗？ While John was taking photos,Mary bought a drink. John was taking photos when Mary bought a drink. 时间状语从句 主句 主句 时态为__________。 时间状语从句 跟延续性动词，时态_________。 过去进行时 一般过去时 Look 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 room turn on the radio shop take the car to the car wash 活学活用 4a 延续性动词 非延续性动词 1. While John was taking photos, Mary bought a drink. John was taking photos when Mary bought a drink. 2. While John was playing the piano, Mary left the house. John was playing the piano when Mary left the house. 3. While John was cleaning his room, Ma