Unit 6 语法专项——过去进行时 外研版八年级上册 课件 2025-2026学年外研版英语八年级上册

教学课件 外研版八年级上册 Unit 6 语法专项——过去进行时 全解精讲+分层练习 1 学习目标 1 掌握过去进行时核心结构及助动词选择 2 学会四大核心用法及对应时间状语搭配 3 辨析过去进行时与一般过去时的差异 4 区分when和while的用法并灵活运用 语法定义 过去进行时表过去具体时间点正在进行的动作 也可表过去时间段内持续发生的动作 核心结构为 was/were + 动词现在分词 助动词选择由主语的人称和单复数决定 核心结构动词现在分词变化规则 变化类型 规则 示例 一般情况 直接加-ing play-playing; read-reading 去e型 去不发音e加-ing write-writing; dance-dancing 双写型 重读闭音节双写末尾字母加-ing run-running; swim-swimming 核心结构 助动词was/were选择规则 主语为I、he、she、it用was 单数名词作主语时用was 主语为you、we、they用were 复数名词作主语时用were 核心用法1 表过去具体时间点正在进行的动作 常搭配具体时间状语或when引导的从句 聚焦过去某一刻动作的进行状态 不强调动作是否完成,只表当时状态 常见时间状语 at 7 p.m. yesterday; this time last night 核心用法1 例句 1 She was writing a letter at 8 oclock yesterday evening. 解析:at 8 oclock yesterday evening是具体过去时间点,用过去进行时,主语she是单数,用was,write的现在分词是writing,表“昨晚8点她正在写信”。 2. He was reading a book when the phone rang. 解析:ring是短暂性动词,用一般过去时,主句用过去进行时was reading,表“电话铃响时,他正在看书” 。 核心用法2 表过去时间段内持续进行的动作 常搭配表时间段的时间状语 强调动作在该时段内的延续性 动作在时间段中不间断进行 常见时间状语 from 3 to 5 yesterday; all day last Saturday 核心用法2 例句 1. I was studying English the whole night last night. 解析:the whole night last night是过去持续时间段,主语I用was,study的现在分词是studying,表“昨晚一整晚我都在学习英语”。 2. We were playing games all afternoon last Saturday. 解析:all afternoon last Saturday是过去持续时间段,主语we用were,play的现在分词是playing,表“上周六整个下午我们都在玩游戏”。 核心用法3 表过去两个动作同时进行 用while连接两个相关的动作 分同步持续和动作打断两种情况 while后只能接延续性动词 不能接happen、ring等短暂性动词 核心用法3 同步持续情况 两个动作无先后,同时处于进行状态 结构为 While+主语+was/were+doing,主语+was/were+doing 侧重两个延续性动作同时发生 无主次之分,均为进行状态 核心用法3 同步持续 例句 1.While my mom was cooking, my dad was reading a newspaper. 解析:while连接两个同步进行的延续性动作,mom和dad分别作主语,均用was,表“我妈妈做饭时,我爸爸正在看报纸”。 2. While she was singing, her sister was dancing. 解析:sing和dance都是延续性动词,用while连接,主语均为单数,用was,表“她唱歌时,她妹妹正在跳舞”。 核心用法4 表过去计划好的即将发生的动作 适用于特定的移动性动词 表过去已经计划好、即将发生的动作 侧重动作的计划性和即将发生性 常见移动性动词 go; come; leave; arrive; start 核心用法4 例句 1 He was leaving for New York the next day. 解析:leave是移动性动词,过去进行时was leaving表过去计划好的动作,表“他计划第二天动身去纽约”。 2 They were coming to our party last Saturday. 解析:come是移动性动词,were coming表过去计划好的动作,表“他们计划上周六来参加我们的派对”。 3 She was arriving in Beijing the following morning. 解析:arrive是移动性动词,was arriving表过去计划好的动作,表“她计划第二天早上到达北京”。 易混点辨析1 过去进行时与一般过去时 两者核心含义存在本质区别 过去进行时侧重动作的进行状态 一般过去时侧重动作的完成结果 时间状语的搭配各有明显特征 易混点辨析1 对比 维度 过去进行时 一般过去时 核心含义 强调进行状态,未完成 强调完成结果,已结束 时间状语 at 9 yesterday; this time last week yesterday; last month; two days ago 例句 He was eating dinner at 6 p.m.(解析:过去进行时,强调“下午6点时,他正在吃晚饭”,动作处于进行中,未强调是否吃完) He ate dinner at 6 p.m.(解析:一般过去时,强调“他下午6点吃了晚饭”,动作已完成,只说明动作发生过) He ate dinner at 6 p.m. 易混点辨析2 when与while的用法差异 两者均可引导时间状语从句 接动词的类型和从句时态不同 when使用范围更广,无动词类型限制 while仅能接延续性动词,使用有特定要求 易混点辨析2 对比 连词 接动词类型 从句常用时态 例句 when 短暂性/延续性动词 一般过去时 When the bell rang, we were having class.(解析:when接短暂性动词rang,用一般过去时;主句是延续性动作having class,用过去进行时,表“铃响时,我们正在上课”) While we were having class, the bell rang.(解析:while接延续性动词having class,用过去进行时;从句是短暂性动作rang,用一般过去时,表“我们正在上课时,铃响了”) while 仅延续性动词 过去进行时 While we were having class, the bell rang. 语法小练1 用所给动词的适当形式填空 1 I _ (read) a book at 9 a.m. last Sunday. 2 They _ (not play) football when it rained. 3 _ he _ (run) in the park this time last week. 4 We _ (listen) to music from 8 to 10 last night. was reading were not playing Was running were listening 语法小练2 按要求改写句子 1 He was doing his homework at 8 p.m. yesterday.(改为否定句) 2 They were watching TV in the living room.(改为一般疑问句) 3 She was singing a song when I came in.(对划线部分提问) He was not doing his homework at 8 p.m. yesterday. Were they watching TV in the living room? What was she doing when you came in? 题型一 用所给动词的适当形式填空 1 She _ (draw) a picture at 10 a.m. last Monday. 2 We _ (not watch) TV when our teacher came in. 3 _ you _ (swim) in the pool this time last night. 4 They _ (play) basketball from 4 to 6 yesterday afternoon. 5 The girl _ (sing) when her mother left home. 6 While my father _ (work), my mother was cleaning the house. 7 My grandma _ (water) flowers all morning yesterday. 8 _ he _ (go) to the park when you saw him. was drawing were not watching Were swimming were playing was singing was working was watering Was going 题型二 按要求改写句子 1 Tom was playing computer games at 7 p.m. yesterday.(改为否定句) 2 They were having a meeting in the office.(改为一般疑问句并作否定回答) 3 He was reading a newspaper when I called him.(对划线部分提问) 4 We were visiting the zoo from 9 to 11 yesterday morning.(对划线部分提问) Tom was not playing computer games at 7 p.m. yesterday. Were they having a meeting in the office? No, they werent. What was he doing when you called him? When were you visiting the zoo? 题型三 单项选择 1 What _ you _ at 8 oclock last night? I _ a book. A did; do; read B were; doing; was reading C are; doing; am reading 2 While my mother _ the dishes, my father _ the newspaper. A washed; read B was washing; read C was washing; was reading 3 When the teacher came in, the students _ loudly. A talked B are talking C were talking 4 Was he _ his bike at 6 p.m. yesterday? No, he _. A repairing; wasnt B repair; didnt C repairing; didnt 5 She _ to school when she met her classmate. A walked B was walking C is walking B C C A B 课堂小结1 核心知识点 1 过去进行时核心结构 was/were + 动词现在分词 2 助动词选择由主语的人称和单复数决定 3 四大用法对应不同时间状语和句式结构 4 移动性动词的过去进行时表过去计划的动作 课堂小结2 易混点复盘 1 过去进行时表进行状态,一般过去时表完成结果 2 when可接短暂性和延续性动词,while仅接延续性动词 3 when从句常用一般过去时,while从句常用过去进行时 4 结合语境和时间状语,准确判断使用的时态 教学课件 Unit 6 语法专项——过去进行时 Thank you for listening! 26 $