Unit 5 语法专项 过去进行时（Past continuous tense）课件- 2025-2026学年人教版八年级英语下册

教学课件 新人教版八年级下册 Unit 5 语法专项——过去进行时（Past continuous tense） 全解精讲+分层练习 1 学习目标 1.掌握过去进行时的基本结构和四种句式变化 2.理解过去进行时的三大核心用法及时间标志 3.区分过去进行时与一般过去时的用法差异 4.掌握when和while的用法区别，完成综合题型练习 知识点1：过去进行时核心概念 1.表示过去某一时刻/时间段正在进行的动作 2.强调动作的持续性和未完成性 3.常用来描述过去某个场景中正在发生的事 4.常与when/while等连词引导的从句连用 知识点2：基本结构（肯定句） 核心公式：主语 + was/were + v.-ing 单复数规则：I/he/she/it 用 was 单复数规则：we/you/they 用 were v.-ing为动词现在分词，变化同现在进行时 例句：He was reading a book at 9 last night. 知识点3：句式变化（否定/一般疑问） 否定句：主语 + was/were + not + v.-ing 例：They were not playing football yesterday afternoon. 一般疑问句：Was/Were + 主语 + v.-ing？ 例：Were you watching TV at this time last night? 知识点4：句式变化（特殊疑问） 特殊疑问句：疑问词 + was/were + 主语 + v.-ing？ 常用疑问词：what/when/where/who/how 例句1：What was she doing when the bell rang? 例句2：Where were they going at 8 yesterday morning? 注意：疑问词作主语时，语序为疑问词+was/were+v.-ing 小试牛刀：句式转换 将句子He was doing his homework.进行句式变化 1.否定句：___________ 2.一般疑问句：___________ 3.特殊疑问句（对划线提问）：___________ He was not doing his homework. Was he doing his homework? What was he doing? 核心用法1：过去某一时刻正在进行的动作 关键：聚焦具体时间点，动作在该时刻正在发生 常用时间标志：at 7:00 yesterday, at this time last night 也可搭配when引导的短暂动作从句 例句：When the phone rang, I was washing clothes. 核心用法2：过去某一时间段持续的动作 关键：动作在一段时间内持续进行，未完成 常用时间标志：from 8 to 10 yesterday morning 也可搭配while引导的时间状语从句 例句：We were walking in the park while it was getting dark. 核心用法3：两个过去动作同时进行 关键：两个动作均为持续动作，同时发生 专用连词：while 连接两个分句 句式：主语1 + was/were + v.-ing + while + 主语2 + was/were + v.-ing 例句：She was singing while her mother was cooking. 现在分词(v.-ing)变化规则 1.一般情况直接加-ing：play→playing, read→reading 2.以不发音e结尾，去e加-ing：write→writing, make→making 3.重读闭音节（辅+元+辅），双写尾字母加-ing：run→running, sit→sitting 4.以ie结尾，变ie为y加-ing：lie→lying, die→dying 易混点1：过去进行时vs一般过去时（表） 时态 核心含义 动作特点 关键词 过去进行时 过去某时正在进行的动作 持续、未完成 while, at this time yesterday 一般过去时 过去某时发生的动作 短暂、已完成 yesterday, last week 易混点1：时态对比例句 1.When the fire started（一般过去时，短暂）, we were having dinner（过去进行时，持续）. 2.The teacher came in（一般过去时，短暂）while we were talking（过去进行时，持续）. 3.He read a book yesterday.（读完了，已完成） 4.He was reading a book at 8 yesterday.（8点正在读，未完成） 易混点2：when vs while 用法对比（表） 连词 接从句的时态 动作特点 时间范畴 when 常接一般过去时 可表短暂/持续动作，突发生 时间点/时间段 while 常接过去进行时 只表持续动作，同时进行 仅时间段 易混点2：when/while 用法例句 1.When the rain came（短暂）, we were waiting for the bus. 2.While we were waiting for the bus（持续）, the rain came. 3.When I was walking home（持续）, I met an old friend. 4.While she was studying, she was listening to music. 核心考点：when/while 连用技巧 1.短暂动作+持续动作：可互换，位置不同 When the bell rang, we were talking. = We were talking while the bell rang. 2.两个持续动作：只能用while，不可用when 3.口诀：短暂用when，持续用while，同时持续只用while 小试牛刀：用when/while填空 1._______ I was doing the dishes, the doorbell rang. 2._______ the storm came, they were driving home. 3._______ my brother was playing games, I was doing homework. 4.He was reading _______ she came in. While When While when 专项练习一：动词形式填空 用所给动词的适当形式填空 1.I ___________ (walk) to school when I saw a cat in the tree. 2._______ (be) he _______ (watch) TV at 8 last night? 3.They ______________ (not play) basketball while we were playing football. 4.What _______ you _______ (do) at this time yesterday? 5.The wind _________ (blow) hard while we ___________ (stay) at home. 6.She ____________ (dance) when the music stopped. 7.We ____________ (have) lunch when the phone rang. 8._______ they _______ (run) on the playground at 4 yesterday afternoon? 9.He _______________ (not read) a book while his sister was drawing. 10.The snow ______________ (fall) when we went out. was walking Was watching were not playing were doing was blowing were staying was dancing were having Were running was not reading was falling 专项练习二：单项选择 从A/B/C/D中选出最佳答案 1.—What _______ you doing at 9 last night? —I _______ reading. A. are; am B. were; was C. did; read D. were; were 2.My mother _______ cooking when I got home yesterday evening. A. is B. was C. did D. does 3._______ it was raining, we were playing chess in the room. A. When B. While C. If D. Because 4.They _______ a walk in the park when the sun came out. A. are having B. had C. were having D. have 5.—Were you sleeping when the phone rang? —_______, I was doing my homework. A. Yes, I was B. No, I wasn’t C. Yes, I did D. No, I didn’t B B B C B 专项练习二：单项选择 6.While my father _______ the newspaper, my mother _______ breakfast. A. read; made B. was reading; made C. read; was making D. was reading; was making 7._______ the teacher came in, the students were talking loudly. A. When B. While C. As D. Since 8.What _______ your sister _______ when the storm started? A. is; doing B. did; do C. were; doing D. was; doing 9.The boys _______ football on the playground at 4 yesterday afternoon. A. played B. were playing C. play D. are playing 10.She _______ not _______ TV while her brother was doing homework. A. was; watching B. were; watching C. did; watch D. was; watch D A D B A 专项练习三：句型转换 按要求改写句子，每空一词 1.He was playing computer games. The light went out.（用when合并） _______ he _______ _______ computer games, the light went out. 2.They were having a party. I arrived at their home.（用while合并） _______ they _______ having a party, I arrived at their home. 3.She was cleaning the room at 10 yesterday morning.（改为一般疑问句） _______ she _______ the room at 10 yesterday morning? 4.We were talking in the classroom.（改为否定句） We _______ _______ _________in the classroom. When was playing While were Was cleaning were not talking 专项练习三：句型转换 5.Tom was reading a storybook at this time last night.（对划线提问） _______ was Tom _______ at this time last night? 6.Were you swimming in the pool when I called you?（作肯定回答） _______, _______ _______. What doing Yes I was 专项练习四：语篇填空 阅读短文，用所给动词的适当形式填空 Yesterday evening, I 1. _______ (do) my homework in my room. My parents 2. _______ (watch) TV in the living room while I 3. ________ (study). Suddenly, the light went out. We 4. ____________ (not do) anything at that moment. My father 5. ____________ (look) for a candle when my mother 6. _______ (find) a flashlight. While my father 7. ____________ (light) the candle, the power came back. We all 8. _______ (laugh) and continued our things. was doing were watching was studying were not doing was looking found was lighting laughed 专项练习五：选词填空（when/while） 用when或while填空，完成短文 _______ I was twelve years old, I had a funny experience. One day, I _______ walking to the library _______ I saw a little dog on the road. It looked lost. I stopped to help it _______ it was barking loudly. Just then, a woman came over. She said the dog was hers. _______ she was thanking me, I found I was late for the library. But I was still happy to help the little dog. When was when while While 专项练习六：判断正误并改正 判断句子正误，对的打√，错的打×并改正 1.He was watch TV when the doorbell rang. ( ) 2.Were you play football at 4 yesterday afternoon? ( ) 3.While we were walking, we see a beautiful bird. ( ) 4.When the rain started, we were having a picnic. ( ) 5.They were not go to school while it was snowing. ( ) 6.What were you doing at this time last week? ( ) × × × √ × √ He was watching TV when the doorbell rang. Were you playing football at 4 yesterday afternoon? While we were walking, we saw a beautiful bird. They were not going to school while it was snowing. 知识总结1：过去进行时核心考点 1.结构口诀：主语在前，was/were中间，v.-ing放后面 2.三大用法：某时刻、某时段、两动作同时进行 3.时间标志：at this time yesterday, from...to...yesterday 4.句式变化：否定加not，疑问把was/were提前 知识总结2：易混点核心口诀 1.时态区分：持续未完成用过去进行，短暂已完成用一般过去 2.连词区分：when管点又管段，while只管持续段 3.连用技巧：短配长，任意放；两组长，用while 课堂小结 1.掌握了过去进行时的基本结构和四种句式变化 2.理解了三大核心用法，能结合时间标志判断使用场景 3.区分了过去进行时与一般过去时、when与while的用法 4.完成了多样题型练习，掌握了高频错题的改正方法 5.能在语篇中灵活运用过去进行时描述过去的场景 教学课件 Unit 5 语法专项——过去进行时（Past continuous tense） Thank you for listening! 29 $