Unit 7 A Day to Remember核心语法讲义-2025-2026学年人教版英语七年级下册

Unit 7 A Day to Remember核心语法讲义 一、核心语法一：过去进行时（Past Continuous Tense） 过去进行时表示过去某一特定时刻正在发生的动作，或过去某一段时间内持续进行的动作。动作具有“持续性、正在进行中”的特点，常与具体时间标志词或语境搭配使用。 （一）基本构成（中考基础考点，必须掌握） 过去进行时由“助动词was/were + 动词的现在分词（doing）”构成，人称和数的变化仅体现在助动词was/were上，动词现在分词形式不变。 人称/数 助动词 基本结构 例句（贴合单元主题） 第一人称单数（I） was I was + doing I was reading a book when the rain started. 下雨开始时，我正在看书。 第一/三人称复数（we/they/you） were We/They/You were + doing They were playing basketball when the storm came. 暴风雨来临时，他们正在打篮球。 第三人称单数（he/she/it） was He/She/It was + doing She was walking home when she saw a strange man. 她正步行回家，突然看到一个陌生男人。 （二）句式变化（中考语法填空/句型转换高频考点） 1. 否定句：在was/were后加not，可缩写为wasn't/weren't 例句：① He was watching TV at 8 last night. → He wasn't watching TV at 8 last night. ② They were talking on the phone. → They weren't talking on the phone. 2. 一般疑问句：将was/were提到句首，首字母大写，句末用问号 例句：① She was cooking dinner at that time. → Was she cooking dinner at that time? （肯定回答：Yes, she was. 否定回答：No, she wasn't.） ② They were waiting for the bus. → Were they waiting for the bus? （肯定回答：Yes, they were. 否定回答：No, they weren't.） 3. 特殊疑问句：特殊疑问词 + was/were + 主语 + doing + 其他？ 例句：① What were you doing at 9 last night? 昨晚9点你在做什么？（回答：I was doing my homework.） ② Where was he working when the accident happened? 事故发生时，他正在哪里工作？（回答：He was working in the office.） （三）核心用法 1. 表示过去某一具体时刻正在进行的动作 常与“at + 具体时间点 + last night/ yesterday morning”“this time yesterday”“at that moment”等时间标志词连用，强调动作在过去某个精准时间点的进行状态。 例句：① At 7 o'clock yesterday evening, my family was having dinner. 昨晚7点，我们一家人正在吃晚饭。（单元“家庭场景”） ② This time yesterday, I was waiting for my friend at the station. 昨天这个时候，我正在车站等我的朋友。 2. 表示过去某一时间段内持续进行的动作 常与“from 8 to 10 last morning”“during the rainstorm”“while”等搭配，动作贯穿整个时间段，而非某个瞬间。 例句：① We were studying for the exam from 9 to 11 last Saturday morning. 上周六上午9点到11点，我们一直在为考试复习。 ② During the heavy snow, people were staying at home to keep warm. 大雪期间，人们都待在家里取暖。（单元“天气场景”） 3. 描述过去两个动作的关系：长动作进行中，短动作突然发生 此时过去进行时表“长动作”，一般过去时表“短动作”，常用when连接（短动作在前），是本单元及中考最常考的语境。 例句：① I was walking in the park when a dog ran towards me. 我正在公园散步，突然一条狗朝我跑来。（walk是长动作，run是短动作） ② The teacher was giving a lesson when the bell rang. 老师正在上课，铃声突然响了。 （四）中考易错点辨析 1. 过去进行时 vs 一般过去时 核心区别：过去进行时表“持续进行的动作”，强调过程；一般过去时表“瞬间完成的动作”，强调结果或事实。 时态 特点 例句（单元语境） 过去进行时 持续动作，强调过程 He was writing a letter when I arrived. 我到的时候，他正在写信。（写信动作持续中） 一般过去时 瞬间动作，强调结果 He wrote a letter yesterday evening. 他昨晚写了一封信。（强调“写了”这个结果） 2. 现在分词（doing）的构成规则（基础易错点） 一般动词直接加-ing：work → working，play → playing（单元高频词）； 以不发音e结尾的动词，去e加-ing：write → writing，take → taking； 重读闭音节动词（辅+元+辅结尾，且末尾只有一个辅音字母），双写末尾辅音加-ing：run → running，swim → swimming，shop → shopping； 以ie结尾的动词，变ie为y加-ing：lie → lying，die → dying（中考偶尔考查）。 （五）中考真题/模拟题例析 1.【2025年河南中考·过去进行时+when从句】—What were you doing when the earthquake happened? —I _____ with my sister in the bedroom. A. play B. played C. was playing D. am playing 答案：C 解析：考点为过去进行时的语境运用。问句用过去进行时询问地震发生时正在做的动作，答句需对应表“持续动作”，用was/were+doing；主语I对应was，故选C。 2.【2025年山东济南中考模拟·句式变化】They were cleaning the classroom at 3 yesterday afternoon.（改为一般疑问句） _____ they _____ the classroom at 3 yesterday afternoon? 答案：Were；cleaning 解析：考点为过去进行时的一般疑问句结构。将助动词were提到句首，动词现在分词cleaning保持不变，句首首字母大写。 3.【2025年湖北武汉中考·易错辨析】—Did you see Tom yesterday? —Yes. When I passed his house, he _____ in the garden. A. waters B. watered C. was watering D. is watering 答案：C 解析：考点为过去进行时与一般过去时的区别。pass是短动作（一般过去时），water是长动作（过去进行时），表“路过时，浇水动作正在进行”，故选C。 二、核心语法二：when/while引导的时间状语从句 when和while均意为“当……的时候”，可引导时间状语从句，描述过去两个动作的关系，但用法有明显区别，核心围绕“动作持续性”判断，是本单元书面表达和中考单选的核心考点。 （1） when的用法 引导的从句中，动词可接短暂性动词（瞬间完成，如start、ring、arrive、see），也可接延续性动词（持续进行，如work、study、wait）。 从句动作与主句动作的关系：① 同时发生（主从句均为延续性动作）；② 从句动作先发生，主句动作后发生（从句为短动作，主句为长动作）。 时态搭配：主句用过去进行时，从句用一般过去时（短动作）；或主从句均用一般过去时（动作先后发生）。 例句（单元语境）：① When he arrived at the party, everyone was dancing. 他到达派对时，所有人都在跳舞。（arrive是短动作，dance是长动作） ② When we were talking, the teacher came in. 我们正在说话时，老师进来了。（talk是延续性动词，主从句动作同时发生） （2） while的用法 引导的从句中，动词只能接延续性动词（不能接短暂性动词），强调动作的持续性。 从句动作与主句动作的关系：两个动作同时持续进行，无先后之分，常翻译为“一边……一边……”。 时态搭配：主从句常均用过去进行时；也可主句用一般过去时，从句用过去进行时（从句为长动作，主句为短动作）。 例句（单元语境）：① While my mother was cooking, my father was watching TV. 我妈妈在做饭时，我爸爸在看电视。（两个延续性动作同时进行） ② While she was reading, the phone rang. 她正在看书时，电话响了。（read是长动作，ring是短动作） （三）when与while的核心区别 when while 从句动词类型 短暂性动词、延续性动词均可 仅能接延续性动词 动作关系 可同时发生，可先后发生 仅能同时持续发生 时态搭配 主过进，从一过；或主从均一过 主从均过进；或主一过，从过进 互换情况 当主从句均为延续性动作，且同时发生时，可与while互换 不能替换when接短暂性动词的用法 互换例句：When/While we were walking home, it started to rain. 我们正步行回家时，开始下雨了。（walk是延续性动词，可互换） 不可互换例句：When the rain started, we were walking home.（start是短暂性动词，不能用while替换when） （3） 中考高频用法拓展 while引导从句时，可省略主语和be动词，结构为“while + doing”，前提是从句主语与主句主语一致。 例句：While (she was) waiting for the bus, she saw a movie star. 她在等公交车时，看到了一位电影明星。 when/while引导的从句可置于句首或句末，置于句首时，需用逗号与主句隔开。 例句：① While he was listening to music, he fell asleep. （句首，加逗号） ② He fell asleep while he was listening to music. （句末，无逗号） （五）中考真题/模拟题例析 1.【2025年江苏苏州中考·when/while区别】—What were you doing _____ your mother was making dinner? —I was doing my homework. A. when B. while C. until D. after 答案：B 解析：考点为while的用法。主从句均为过去进行时（were doing/was making），表两个延续性动作同时进行，只能用while，故选B。 2.【2025年广东广州中考·动词类型判断】The little girl was crying _____ she couldn't find her mother. A. when B. while C. so D. because 答案：A 解析：考点为when接短暂性动词的用法。couldn't find是短暂性动作（瞬间发生），while不能接短暂性动词，故选A。 3.【2025年浙江杭州期末统考·互换与省略】While my brother _____ basketball, he hurt his leg.（用play的适当形式填空） 答案：was playing 解析：考点为while的时态搭配。while引导从句接延续性动词，主从句动作同时发生，主句hurt是一般过去时，从句用过去进行时；主语my brother是第三人称单数，故填was playing。 三、语法闯关训练 (1) 【2025年湖南长沙中考】—What _____ you _____ at 10 last night? —I was reading a novel. A. do; do B. did; do C. were; doing D. are; doing (2) 【2025年福建厦门期末统考】He _____ TV when his mother came back home yesterday. A. watches B. watched C. was watching D. is watching (3) 【2025年安徽合肥中考】They _____ not in the classroom at 9 yesterday morning. They were in the library. A. are B. were C. was D. is (4) 【2025年辽宁沈阳中考】—Was she washing clothes when you arrived? —_____. She was reading a book. A. Yes, she was B. No, she wasn't C. Yes, she did D. No, she didn't (5) 【2025年云南昆明中考模拟】My sister _____ her homework while my parents were watching TV last night. A. does B. did C. was doing D. is doing (6) 【2025年贵州贵阳中考】—When did the accident happen? —It happened while we _____ to the airport. A. drive B. drove C. were driving D. are driving (7) 【2025年山西太原中考】He was playing the piano when his father _____ home. A. came B. comes C. was coming D. will come (8) 【2025年内蒙古呼和浩特中考】_____ they were talking about the film, the teacher came into the classroom. A. When B. While C. Until D. After (9) 【2025年宁夏银川期末统考】She _____ a letter to her pen pal when the phone rang. A. writes B. wrote C. was writing D. is writing (10) 【2025年海南海口中考】—What was your brother doing at this time yesterday? —He _____ basketball with his friends. A. plays B. played C. was playing D. will play (11) 【2025年新疆乌鲁木齐中考】While my mother _____ breakfast, I brushed my teeth. A. cooks B. cooked C. was cooking D. is cooking (12) 【2025年广西南宁中考模拟】They were talking on the phone when the light _____ out. A. go B. went C. goes D. was going (13) 【2025年甘肃兰州中考】—Were you at home at 8 last night? —Yes. I _____ with my family at that time. A. have dinner B. had dinner C. was having dinner D. am having dinner (14) 【2025年青海西宁中考】The students _____ for the test when the storm came. A. study B. studied C. are studying D. were studying (15) 【2025年江苏无锡中考】When I saw her, she _____ a red dress and a pair of white shoes. A. wears B. wore C. was wearing D. is wearing (16) 【2025年浙江宁波中考】While they _____ the house, they found an old photo. A. clean B. cleaned C. are cleaning D. were cleaning (17) 【2025年山东青岛中考模拟】He wasn't _____ TV at 7 last night. He was reading a book.（用watch的适当形式填空） (18) 【2025年湖北宜昌中考】When the teacher came in, the students _____ (talk) loudly.（用talk的适当形式填空） (19) 【2025年广东佛山中考】While she _____ (wait) for the bus, she listened to music.（用wait的适当形式填空） (20) 【2025年河南郑州中考模拟】—What were you doing when the rain started? —I _____ (walk) in the street with my friend. 五、闯关训练答案+详细解析 (1) 答案：C 解析：考点为过去进行时的特殊疑问句。由时间标志词at 10 last night可知，询问过去某一时刻正在做的动作，结构为what were you doing，故选C。 (2) 答案：C 解析：考点为过去进行时+when从句。came是一般过去时（短动作），主句表“妈妈回来时正在看电视”，用过去进行时，主语he对应was watching，故选C。 (3) 答案：B 解析：考点为过去进行时的否定句。由时间标志词at 9 yesterday morning可知，用过去时；主语they对应were，否定式为were not，故选B。 (4) 答案：B 解析：考点为过去进行时的一般疑问句回答。问句用was she doing，答句根据后句“她正在看书”可知是否定回答，用No, she wasn't，故选B。 (5) 答案：C 解析：考点为while引导从句的时态搭配。while从句用过去进行时（were watching），主句动作同时进行，也用过去进行时，主语my sister对应was doing，故选C。 (6) 答案：C 解析：考点为while引导从句的动词类型。while接延续性动词，happen是短动作，从句表“正在开车时事故发生”，用过去进行时were driving，故选C。 (7) 答案：A 解析：考点为过去进行时+when从句。was playing是过去进行时（长动作），when从句接短动作，用一般过去时came，故选A。 (8) 答案：B 解析：考点为while的用法。从句were talking是延续性动作（过去进行时），表两个动作同时进行，用while，故选B。 (9) 答案：C 解析：考点为过去进行时+when从句。rang是一般过去时（短动作），主句表“电话响时正在写信”，用过去进行时was writing，故选C。 (10) 答案：C 解析：考点为过去进行时的语境运用。由时间标志词this time yesterday可知，询问过去某一时刻正在做的动作，用was playing，故选C。 (11) 答案：C 解析：考点为while引导从句的时态搭配。brushed是一般过去时（短动作），while从句接长动作，用过去进行时was cooking，故选C。 (12) 答案：B 解析：考点为过去进行时+when从句。were talking是过去进行时（长动作），when从句接短动作，用一般过去时went，go out意为“熄灭”，故选B。 (13) 答案：C 解析：考点为过去进行时的用法。由时间标志词at 8 last night和at that time可知，表过去某一时刻正在进行的动作，用was having dinner，故选C。 (14) 答案：D 解析：考点为过去进行时+when从句。came是一般过去时（短动作），主句表“暴风雨来临时正在复习”，用过去进行时were studying，故选D。 (15) 答案：C 解析：考点为过去进行时的语境运用。saw是一般过去时（短动作），表“看到她时，她正穿着红裙子”，用过去进行时was wearing，故选C。 (16) 答案：D 解析：考点为while引导从句的用法。found是一般过去时（短动作），while从句接长动作，用过去进行时were cleaning，故选D。 (17) 答案：watching 解析：考点为过去进行时的否定句。wasn't后接动词现在分词，watch的现在分词是watching。 (18) 答案：were talking 解析：考点为过去进行时+when从句。came是一般过去时（短动作），主句表“老师进来时正在大声说话”，主语students是复数，用were talking。 (19) 答案：was waiting 解析：考点为while引导从句的时态。listened是一般过去时，while从句接长动作，用过去进行时，主语she对应was waiting。 (20) 答案：was walking 解析：考点为过去进行时的语境运用。问句用过去进行时询问下雨开始时正在做的动作，答句对应用was walking，主语I对应was。 学科网（北京）股份有限公司 $