Unit 5 语法专练 2025-2026学年人教版英语八年级下册

本初中英语讲义聚焦过去进行时及when/while引导时间状语从句核心知识点，先系统梳理过去进行时的概念、基本结构、be动词使用规则及常用时间标志词，再深入解析when/while在动词类型、时态搭配上的区别、两大黄金句式及三大易错点，形成由基础到重难点的学习支架。 资料通过对比表格清晰呈现when/while用法差异，结合典型例句强化理解，培养学生思维品质；设计单选、适当形式填空及语篇语法填空等多样化练习，提升语言运用能力。答案解析详尽，课中辅助教师高效授课，课后助力学生自主查漏补缺，发展学习能力。

Unit 5 过去进行时 when/while引导时间状语从句 一、核心语法基础:过去进行时(Past Continuous Tense) 1. 基本概念 过去进行时表示过去某个具体时间点正在发生的动作,或过去某一时间段内持续进行的动作。该时态侧重强调动作在过去处于“正在进行、未结束”的状态,区别于一般过去时(侧重过去动作已完成)。 2. 基本结构 肯定句:主语 + was / were + 动词现在分词(doing)+ 其他 否定句:主语 + was / were + not + 动词现在分词(doing)+ 其他 一般疑问句:Was / Were + 主语 + 动词现在分词(doing)+ 其他? 3. 核心be动词使用规则 单数主语(he/she/it/单数名词/不可数名词/this that) 用was 复数主语(we/you/they/复数名词/these those) 用were 4. 常用时间标志词 at that time(在那时)、at 8:00 last night(昨晚八点)、from 7:00 to 9:00 yesterday(昨天七点到九点)、all night yesterday(昨天一整晚)等。 二、重难点核心:when & while引导过去时间状语从句用法 1. 基础核心区别 引导词 从句接续动词类型 时态搭配规则 中文含义 when 可接短暂性动词(瞬间完成:arrive/stop/see/come/go);也可接延续性动词 when从句常用一般过去时;主句常用过去进行时 当……时候;就在这时 while 只接延续性动词(持续进行:read/wait/study/work/sleep),绝不接短暂性动词 while从句必须用过去进行时;主句常用一般过去时/过去进行时 正当……期间;一边……一边 2. 两大黄金句式 句式一:长动作(持续进行)+ 短动作(突然插入) 主句(过去进行时,长持续动作)+ when + 从句(一般过去时,短突发动作) 例句:I was reading a book when my mother came in. 我正在看书,这时我妈妈进来了。 句式二:两个长动作(过去同时持续进行) 主句(过去进行时)+ while + 从句(过去进行时) 例句:My father was cooking while my mother was washing clothes last night. 昨晚我爸爸做饭的时候,我妈妈在洗衣服。 3. 三大易错点 错误:while后接短暂性动词(while arrived); 正确:while后只接延续性动词,短暂动作只用when引导 错误:时态混用,长动作用一般过去时; 正确:持续进行的长动作必用过去进行时 错误:be动词单复数乱用; 正确:牢记单数was、复数were,主语为准不混淆 三、语法专项精炼 一.单项选择,从A、B、C、D四个选项中选出最佳答案。 1. I _ homework at 9:00 last night. A. do B. did C. was doing D. am doing 2. He was walking on the street _ he met his old friend. A. when B. while C. what D. how 3. My sister _ TV while I was doing my homework yesterday evening. A. watched B. was watching C. watches D. is watching 4. _ the teacher came in, we were talking loudly. A. While B. When C. After D. Before 5. They _ basketball at that time yesterday afternoon. A. play B. played C. were playing D. are playing 6. While my father _, I was listening to music. A. worked B. was working C. works D. is working 7. She _ in the room when the rainstorm came. A. sleep B. slept C. was sleeping D. sleeps 8. We were reading books _ the bell rang. A. while B. when C. because D. so 9. Were you _ computer games at 7:00 last morning? A. play B. played C. playing D. plays 10. While they _, it began to snow. A. walk B. walked C. were walking D. are walking 二.用所给词适当形式填空 用括号内所给动词的适当形式填空,注意过去进行时及when/while时态搭配。 1. He _ (swim) in the river at 5:00 yesterday afternoon. 2. When I _ (get) up, my mom _ (cook) breakfast. 3. While my brother _ (study), I _ (clean) the room. 4. They _ (not watch) TV at that time last night. 5. _ (be) you reading a storybook when your dad came back? 6. The girl _ (draw) pictures when the teacher called her name. 7. While it _ (rain), we were staying at home. 8. My uncle _ (drive) his car from 2:00 to 4:00 yesterday. 9. We _ (talk) loudly when the head teacher appeared. 10. She _ (not sleep) at 11:00 last night; she was reading novels. 三.语法填空 阅读短文,在空白处填入一个适当的词,或用括号内所给单词的适当形式填空。 Last Sunday, my family and I had a special experience. It was 3:00 in the afternoon. My father 1._ (fix) his bike in the yard 2._ my mother 3._ (prepare) snacks in the kitchen. My little sister 4._ (play) with her toys quietly 5._ suddenly, a strong wind came. 6._ the wind was blowing hard, we all felt surprised. I 7._ (stand) by the window when I 8._ (see) dark clouds in the sky. My sister was scared 9._ she held my hand tightly. While we 10._ (talk), it started to rain heavily. We all went into the house quickly and felt lucky. 1._2._3._4._5._ 6._7._8._9._10._ 答案解析 单项选择答案&解析 1. 答案:C 解析:at 9:00 last night为过去具体时间点,强调当时正在做的动作,用过去进行时was doing。 2. 答案:A 解析:met(遇见)是短暂性动词,瞬间动作,只能用when引导时间状语从句,while后不接短暂动作。 3. 答案:B 解析:while引导从句用过去进行时,主句对应同步持续动作,也用过去进行时was watching。 4. 答案:B 解析:the teacher came in(老师进来)是短暂突发动作,用when引导从句,主句过去进行时。 5. 答案:C 解析:at that time yesterday afternoon为过去特定时间段,动作持续进行,用were playing。 6. 答案:B 解析:while后接延续性动词,从句必须用过去进行时was working,表同步持续动作。 7. 答案:C 解析:when引导从句一般过去时(rainstorm came),主句强调正在进行的长动作,用was sleeping。 8. 答案:B 解析:the bell rang(铃声响了)是短暂突发动作,固定搭配主句过去进行时+when从句一般过去时。 9. 答案:C 解析:过去进行时一般疑问句结构:Were+主语+doing,此处填play的现在分词playing。 10. 答案:C 解析:while从句动作延续进行,主句动作突发,从句用过去进行时were walking。 适当形式填空答案&解析 1. was swimming 解析:过去具体时间点at 5:00 yesterday afternoon,单数主语he,用was+doing。 2. got; was cooking 解析:when从句短动作用一般过去时got;主句长动作正在进行,用was cooking。 3. was studying; was cleaning 解析:while引导两个同步持续长动作,主从句均用过去进行时。 4. weren't watching 解析:at that time last night过去持续时间,复数主语they,否定形式weren't+doing。 5. Were 解析:过去进行时一般疑问句,主语you,开头用Were,首字母大写。 6. was drawing 解析:when突发动作插入,主句过去正在进行的动作,单数主语用was drawing。 7. was raining 解析:while从句延续动作,用过去进行时was raining。 8. was driving 解析:from 2:00 to 4:00 yesterday过去时间段,动作持续进行,单数主语用was driving。 9. were talking 解析:when突发动作出现,主句当时正在谈话,复数主语we用were talking。 10. wasn't sleeping 解析:过去具体时间点11:00 last night,否定持续动作,单数主语用wasn't sleeping。 语法填空答案&解析(10空) 答案:1. was fixing 2. while 3. was preparing 4. was playing 5. when 6. While 7. was standing 8. saw 9. so 10. were talking 逐空解析:1. 过去具体时间3点,单数主语father,过去进行时was fixing;2. 连接两个同步持续家务动作,用while;3. 妈妈同步做准备工作,过去进行时was preparing;4. 妹妹当时正在玩玩具,单数主语was playing;5. 突发大风,短暂动作,用when;6. 强调刮风持续期间,句首大写While;7. 我当时正站窗边,单数主语was standing;8. 看见乌云,短暂动作用一般过去时saw;9. 前后因果关系,害怕所以牵手,填so;10. while从句持续谈话动作,复数主语were talking。 ( 1 ) 学科网(北京)股份有限公司 $