Unit8语法讲解及习题_过去进行时、when_while_as连词辨析、复合词构词法2026-2027学年译林版英语八年级上册

2026-08-12
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学段 初中
学科 英语
教材版本 初中英语译林版八年级上册
年级 八年级
章节 Unit 8 Safe and sound
类型 学案-知识清单
知识点 -
使用场景 同步教学-新授课
学年 2026-2027
地区(省份) 全国
地区(市) -
地区(区县) -
文件格式 DOCX
文件大小 34 KB
发布时间 2026-08-12
更新时间 2026-08-12
作者 课堂干货铺(主页搜资料,初中英语各版本,不定时更新)
品牌系列 -
审核时间 2026-08-12
下载链接 https://m.zxxk.com/soft/59177572.html
价格 0.50储值(1储值=1元)
来源 学科网

摘要:

该初中英语知识清单系统梳理了译林八上Unit8的核心语法知识。从过去进行时的基本结构、时间标志词及与时态辨析入手,过渡到when/while/as连词的用法对比,再延伸至复合词构词法的分类与拼写易错点,构建连贯的语法学习支架。 知识链路按照“概念-结构-用法-辨析-应用”逻辑展开,通过口诀、例句对比强化when/while/as的差异,复合词部分突出拼写易错提醒。配套练习题覆盖单选、填空、句型转换等多种形式,注重语言能力的综合训练和思维品质的提升,帮助学生掌握科学的语法学习方法。

内容正文:

译林英语八上Unit8语法讲解及习题: 过去进行时、when/while/as连词辨析、复合词构词法 第一部分 核心语法一:过去进行时(Past Continuous Tense) 一、语法总述 过去进行时用于描述过去某个具体时刻、过去某一阶段正在持续进行的动作,侧重强调动作的持续性、正在进行的状态,区别于一般过去时(侧重动作已经结束)。该时态常搭配精准过去时间状语,且高频与when/while引导的时间从句连用。 二、核心句式结构(必考) 基本公式:was/were + 动词现在分词(v.-ing) 主谓匹配规则:主语单数/不可数名词/I 用was;主语复数/you 用were 1. 肯定句 结构:主语 + was/were + v.-ing + 其他 例句:I was walking home at this time yesterday.(昨天这个时候我正步行回家。) 例句:They were playing basketball all afternoon yesterday.(昨天整个下午他们都在打篮球。) 2. 否定句 结构:主语 + was/were + not + v.-ing + 其他(缩写:wasn’t / weren’t) 例句:She wasn’t reading books at 8 last night.(昨晚八点她没在看书。) 3. 一般疑问句 结构:Was/Were + 主语 + v.-ing + 其他? 回答:Yes, 主语+was/were. / No, 主语+wasn’t/weren’t. 例句:Were you doing your homework then?(那时你在写作业吗?) 三、常用时间标志词 1. 精准时刻:at 8 o’clock last night、at that moment、at this time yesterday 2. 阶段时长:all morning yesterday、all day last Sunday、from 7 to 9 last night 3. 从句搭配:when/while/as 引导的过去时间从句 四、核心用法与时态辨析 1. 过去进行时:强调过去正在进行、持续的动作,动作未结束; 2. 一般过去时:强调过去动作已经完成,只陈述事实; 3. 经典搭配:长动作(过去进行时)铺垫,短动作(一般过去时)突发切入。 第二部分 核心语法二:when / while / as 连词用法辨析 一、语法总述 三个连词均可引导过去时间状语从句,译为“当……时候”,核心区别在于适配动作类型、时态搭配、语义侧重,是本单元最高频易错点,主要考查主从句时态匹配、选词填空。 二、逐词精讲 1. when(适用范围最广) ✅ 可接瞬间短动作(start/happen/arrive)、延续长动作; ✅ 适配场景:长动作进行中,突发短动作发生; ✅ 经典句式:过去进行时 + when + 一般过去时 例句:We were sleeping when the storm came.(暴风雨来的时候,我们正在睡觉。) 2. while(仅限持续动作) ✅ 从句只能接延续性长动作(walk/read/rain/work),必须用进行时态; ✅ 适配场景:两个长动作同时同步进行; ✅ 经典句式:while引导从句用过去进行时,主句也用过去进行时 例句:Mum was cooking while I was doing homework.(我写作业时,妈妈在做饭。) 3. as(同步伴随) ✅ 侧重两个动作同步伴随、一边……一边……; ✅ 多搭配延续性动作,强调动态同步过程; 例句:She sang as she walked along the road.(她沿路边走边唱。) 三、解题口诀 短动突发用when,长动同步用while,伴随进行就用as; while从句必进行,瞬间动词不兼容。 第三部分 Word Power:单元复合词构词法 一、语法总述 复合词由两个独立单词拼接构成新单词,词义关联原词,本单元聚焦三类高频复合词,主要考查拼写识记、词形填空、词义辨析,拼写易错点为考试高频陷阱。 二、分类精讲 1. 名词+名词 复合词 thunder(雷)+ storm(暴风雨)= thunderstorm(雷暴) snow(雪)+ ball(球)= snowball(雪球) head(头)+ ache(疼痛)= headache(头痛) police(警务)+ man(人)= policeman(男警察) 2. 动词/名词+名词 复合词 pass(通过)+ port(港口)= passport(护照) air(空气/航空)+ port(港口)= airport(机场) play(玩耍)+ ground(场地)= playground(操场) post(邮寄)+ card(卡片)= postcard(明信片) 3. 副词/虚词类复合词 some+thing=something(某物)、week+end=weekend(周末)、country+side=countryside(乡村) 三、拼写核心易错提醒 1. headache 切勿漏写末尾e;2. airport 切勿拼写为airpot;3. postcard 不可漏写字母c;4. 所有单元复合词均为独立单词,不可拆分书写。 第四部分 综合专项练习题 题型一:单项选 1. I ______ a shower when the sudden rainstorm happened. A. take B. took C. was taking D. am taking 2. ______ my parents were watching TV, I was reading a novel. A. When B. While C. As D. Since 3. She ______ in the classroom at this time yesterday. A. isn’t studying B. didn’t study C. wasn’t studying D. won’t study 4. We can see thick clouds before a strong ______. A. thunderstorm B. snowball C. headache D. countryside 5. The boy fell down ______ he was riding his bike. A. while B. when C. as D. all above 6. ______ you busy doing housework at 7 last night? A. Are B. Were C. Did D. Do 7. He was walking to school ______ he saw a policeman. A. while B. when C. as D. though 8. People usually make ______ in winter when it snows heavily. A. snowballs B. snowball C. thunderstorms D. playgrounds 9. My sister ______ not ______ music at that moment. A. was; listening B. were; listening C. did; listen D. do; listen 10. She sang songs ______ she was walking home alone. A. when B. while C. as D. so 题型二:动词适当形式填空 11. It ______________ (snow) heavily at 9 o’clock last night. 12. They ______________ (not play) outside when the wind started to blow hard. 13. My brother ______________ (read) a magazine while I was preparing dinner. 14. The workers ______________ (repair) the road all morning yesterday. 15. ______________ you ______________ (watch) TV when your teacher called you? 16. She ______________ (feel) a little tired while she was doing sports. 17. The rain ______________ (stop) while we were talking in the room. 18. We ______________ (learn) new knowledge at this time yesterday. 题型三:复合词拼写填空 19. A ______________ (police + man) came to help us during the storm. 20. I had a bad ______________ (head + ache) because of the bad weather. 21. We will meet our relatives at the ______________ (air + port) tomorrow morning. 22. There was a terrible ______________ (thunder + storm) in the evening. 题型四:句型转换 按要求改写句子,每空一词 23. He was playing computer games at that time.(改为否定句) He ______________ ______________ computer games at that time. 24. They were cleaning the classroom this time yesterday.(改为一般疑问句) ______________ they ______________ the classroom this time yesterday? 25. I was doing my homework when my mum came back.(对划线部分提问) ______________ ______________ you ______________ when your mum came back? 26. While I was walking, I found a small dog.(同义句转换) I found a small dog ______________ I was walking. 27. The wind was blowing strongly yesterday.(改为感叹句) ______________ ______________ the wind was blowing! 28. Were you reading books at 8 last night?(肯定回答) ______________, I ______________. 29. She was sleeping. The phone rang.(用when合并句子) She ______________ ______________ when the phone rang. 题型五:短文综合填空 阅读短文,用括号内单词正确形式填空,综合全单元语法 Yesterday afternoon, it suddenly rained heavily. I ______________ (walk) home from school when the thunderstorm came. My classmates ______________ (run) quickly while the rain ______________ (fall). Later, we made some ______________ (snowball) after the rain stopped. 第五部分 参考答案 题型一:单项选择 1. C 解析:when引导短动作(happened一般过去时),主句为过去正在进行的长动作,用过去进行时was taking。 2. B 解析:主从句均为延续性长动作、同步进行,while专门适配两个同时发生的持续动作。 3. C 解析:at this time yesterday为过去进行时标志词,主语she为单数,否定形式用wasn’t studying。 4. A 解析:乌云密布是雷暴来临的前兆,thunderstorm雷暴,贴合语境。 5. D 解析:ride为延续性动作,when/while/as均可引导此类时间状语,三项均正确。 6. B 解析:at 7 last night为过去精准时刻,用过去进行时,主语you对应be动词were,一般疑问句提前were。 7. B 解析:长动作(走路)进行中突发短动作(看见警察),固定搭配when连接。 8.A 解析:下雪天的常规活动是堆雪球,make snowballs为固定搭配,用复数表泛指。 9. A 解析:at that moment为过去进行时标志,主语my sister为单数,用was listening。 10. C 解析:句意为边走边唱,强调两个动作同步伴随进行,as侧重伴随同步,为最佳选项。 题型二:动词填空 11. was snowing 解析:at 9 o’clock last night为过去精准时刻,用过去进行时,主语it用was。 12. weren’t playing 解析:when引导短动作,主句强调当时正在进行的动作,主语they为复数,否定用weren’t playing。 13. was reading 解析:while引导从句为过去进行时,主从句同步进行,主句也用过去进行时。 14. were repairing 解析:all morning yesterday为过去持续时间段,主语workers为复数,用were repairing。 15. Were; watching 解析:when引导过去短动作,主句询问当时是否正在做某事,一般疑问句提前were。 16. was feeling 解析:while引导持续动作,主句动作同步发生,用过去进行时。 17. stopped 解析:while从句为过去进行时,主句为突发短动作,用一般过去时stopped。 18. were learning 解析:at this time yesterday为过去进行时固定标志,主语we用were learning。 题型三:复合词填空 19. policeman 解析:名词+名词复合词,police+man构成policeman(男警察),单数匹配冠词a。 20. headache 解析:固定复合词headache(头痛),牢记完整拼写,不可漏写字母e。 21. airport 解析:air+port构成airport(机场),固定拼写,无字母替换。 22. thunderstorm 解析:thunder+storm构成thunderstorm(雷暴),贴合恶劣天气语境。 题型四:句型转换 23. wasn’t playing 解析:过去进行时否定句,直接在was后加not,动词ing形式不变。 24. Were; cleaning 解析:过去进行时一般疑问句,复数主语提前were,动词保持ing形式。 25. What were; doing 解析:对正在进行的动作提问用what,主语you对应were,后接doing。 26. when/while/as 解析:三个连词均可引导延续性动作,可同义替换,句意不变。 27. How strongly 解析:对副词strongly感叹,用How+副词+主谓结构,符合感叹句规则。 28. Yes; was 解析:第二人称疑问句,回答转换为第一人称,对应be动词was。 29. was sleeping 解析:when引导突发短动作,主句用过去进行时,贴合长动作被打断的语境。 题型五:短文填空 30. was walking 解析:when引导雷暴突发短动作,主句为正在走路的持续动作,用过去进行时。 31. were running 解析:while引导下雨的持续动作,同学们奔跑是同步进行的动作,用过去进行时。 32. was falling 解析:while从句主语rain为单数,过去进行时用was falling,表持续下雨。 33. snowballs 解析:make snowballs为固定搭配,用复数表泛指,堆雪球。 ( 1 ) 学科网(北京)股份有限公司 $

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Unit8语法讲解及习题_过去进行时、when_while_as连词辨析、复合词构词法2026-2027学年译林版英语八年级上册
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Unit8语法讲解及习题_过去进行时、when_while_as连词辨析、复合词构词法2026-2027学年译林版英语八年级上册
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Unit8语法讲解及习题_过去进行时、when_while_as连词辨析、复合词构词法2026-2027学年译林版英语八年级上册
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