Day14.过去进行时：be+doing 结构与 when/while 的区别辨析
参考答案与详解
第一部分解析
1.D | 【解析】时间状语 "at 8:00 last night" 指过去某一具体时刻，动作正在进行，用过去进行时。
2.C | 【解析】"when I got home" 指过去某一瞬间动作，妈妈正在厨房忙碌是背景，用过去进行时。
3.B | 【解析】前后两个动作（打游戏和做作业）都是延续性的长动作且并行发生，常用 while。
4.C | 【解析】"the rainstorm came" 是瞬间动词，通常由 when 引导，表动作突发。
5.C | 【解析】While 引导的从句通常用进行时，主语 students 为复数，用 were talking。
6.B | 【解析】"正在走路"是背景长动作，"遇到朋友"是突然发生的短动作，主句用进行时。
第二部分解析
7.were decorating | 【解析】"At this time yesterday" 是标准过去进行时标志词。
8.was reading | 【解析】While 引导延续性动词读报纸的过程。
9.were; doing | 【解析】"from 7:00 to 9:00 last night" 指过去的一段时间段。
10.were having | 【解析】正在吃晚饭期间，灯灭了。
11.was writing | 【解析】写信是正在进行的背景动作。
12.is cleaning; was cleaning | 【解析】前句 Look 提示现在进行时；后句 when I saw him 指过去正在做。
第三部分解析
13.He was having a meeting when the manager came in. | 【解析】长进行，when 短一般。
14.when; was cooking | 【解析】注意 when 也可以接延续性动词，此时逻辑与 while 相似。
15.While I was sleeping, it started to snow outside. (或 It started to snow when I was sleeping.)
16.Li Hua was playing basketball at 4:00 yesterday afternoon.
17.A | While | 【解析】虽然 when 也可以接进行时，但中考考情中，引导进行时从句首选 While，这是标准
规范。
18.The students were listening carefully while the teacher was giving a lesson.30 天早背晚练——初中英语语法强基训练计划
Day 14：过去进行时：be+doing 结构与 when/while 的区别辨析
一、 基本概念与构成
1. 定义： 表示在过去某一具体时刻或某一段时间内正在进行的动作。
例： I was doing my homework at 8:00 last night. (强调 8 点钟那个瞬间动作正在进行)
2. 核心结构：
肯定句： 主语 + was/were +动词的现在分词 (v-ing)
I/He/She/It 用 was；We/You/They 用 were。
否定句： 主语 + was/were + not + v-ing
疑问句： Was/Were + 主语 + v-ing +......
二、核心用法场景
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场景分类 含义与逻辑 典型例句
特定时刻 过去某个确定的时间点正在做某事。 What were you doing at this time yesterday
动作背景 一个长动作正在进行时，被另一个短动作打断。 He was sleeping when the doorbell rang.
并行动作 过去同一时段，两个动作同时在进行。 Mom was cooking while Dad was cleaning.
情感色彩 与 always 连用，表示过去经常性的不满或赞美。 He was always losing his keys.
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三、 深度辨析：when 与 while 的区别
这是中考命题频率最高、失分最严重的知识点。
1. 引导词的本质区别
when (当……时)： 既可接“点动词”（瞬间动词，如 jump, start），也可接“线动词”（延续性动词，如 live, study）。
while (在……期间)： 只能接“线动词”（延续性动词），强调动作的过程，因此 while 引导的从句常用进行时。
2. 常见逻辑搭配
长动作用进行，短动作用一般。 (当一个动作发生时，另一个动作正在背景中进行)
结构 A: Past Continuous + when + Past Simple
例: I was walking in the park when it started to rain.
结构 B: While + Past Continuous, Past Simple
例: While I was walking in the park, it started to rain.
双进逻辑： 两件事同时发生，均用延续性动词，常用 while 连接。
例: While the students were talking, the teacher was writing on the blackboard.
四、记忆技巧与踩坑点
1. 技巧总结：
“While 后面必进行”： 在初中阶段，如果看到连词后是进行时，首选 while；如果连词后是一般过去时（瞬间动作），
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首选 when。
三步判断法： ①找时间状语（是否指向过去）。②看动作性质（是“那一刻正在做”还是“那天做了”）。③选 was/were
（注意主谓一致）。
2. 易错坑点：
状态动词无进行时： 描述心理状态、感官、所属的词（如 know, want, like, have 表示“拥有”时）通常不用于进行时。
（×）I was knowing the truth. →（√）I knew the truth.
When 的特殊性：when 后面也可以接进行时，但此时相当于 while；而 while 后面绝不能接一般过去时的瞬时动词。
五、 出题方向参考
语境填空： 给出 when 引导的从句，要求补全主句的过去进行时。
词义辨析： 在单项选择中区分 when 和 while。
合并句子： 考查学生利用 while 将两个过去发生的并行描述合并为一个长句的能力。
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30 天早背晚练——初中英语语法强基训练计划
Day 14： 过去进行时：be+doing 结构与 when/while 的区别辨析 【配套练习】
姓名： 日期： 分数：
一、单项选择【考查：基础结构、语境判断及 when/while 的基本选词。】
1.(2024·江苏)— I called you at 8:00 last night, but you didn't answer. — Oh, I ________ a shower at that time.
A. take B. took C. am taking D. was taking
2.(2023·北京)My mother ________ the kitchen when I got home yesterday afternoon.
A. cleans B. is cleaning C. was cleaning D. has cleaned
3.(2022·广东)My brother was playing video games ________ I was doing my homework.
A. when B. while C. after D. before
4.(2024·模拟预测)—What was the girl doing ________ the rainstorm came — She was helping her mom with housework.
A. while B. until C. when D. since
5.(2023·武汉)While the students ________ about the robot, the teacher came in.
A. talk B. talked C. were talking D. are talking
6.(2022·四川) I ________ along the street when I met an old friend of mine.
A. walked B. was walking C. am walking D. walk
二、用所给词的适当形式填空【考查：was/were 主谓一致、延续性动词与非延续性动词的结合应用。】
7.(2023·河南) At this time yesterday, we ________ (decorate) our classroom for the New Year party.
8.(2022·陕西)While my father ________ (read) the newspaper, the telephone rang.
9.(2024·四川模拟)What ________ you ________ (do) from 7:00 to 9:00 last night
10.(2023·重庆) The lights went out while we ________ (have) dinner.
11.(2022·杭州) I ________ (write) a letter when I heard a loud noise outside.
12.(2024·模拟预测) Look! He ________ (clean) the window. Wait, I mean he ________ (clean) it when I saw him just now.
三、综合应用：句型转换与翻译【考查：when/while 逻辑转换、中考典型“踩坑”翻译。】
13.(句型转换) He was having a meeting. The manager came in. (用 when 合并为一句)
________________________________________________________________________________.
14.(句型转换)While I was cooking, my sister was watching TV. (用 when 替换 while 改写，不改变句意)
My sister was watching TV ________ I ________ ________.
15.(翻译) 当我正在睡觉的时候，外面开始下雪了。(强调长短动作交替)
________________________________________________________________________________.
16.(翻译) 昨天下午四点，李华正在打篮球。(考查特定时间点)
________________________________________________________________________________.
17.(纠错) When (A) my mother was (B) cooking, my father arrived (C) at (D) home. (找出错误并改正)
错误项：______ 改正：____________
18.(翻译) 当老师在讲课时，同学们正在认真听讲。(两个长动作并行)
________________________________________________________________________________.
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