Unit5 课时4 Grammar Focus 课件 2025-2026学年人教版八年级英语下册

2. Whose birthday is it? Unit 5 Nature's Tempe 人教版 英语（八年级下册） Section A Grammar Focus 2. Whose birthday is it? 掌握过去进行时的结构、用法，区分 when/while 引导时间状语从句的规则。（学习理解） 01 能听懂、认读、运用过去进行时描述过去某一时刻正在进行的动作；能正确使用 when/while 合并句子、完成语篇；能进行简单的采访对话。（应用实践） 02 通过对比 when/while 的用法，培养辨析、批判性思维。（迁移创新） 03 学习目标 Watch the video What were people doing at the time of rainstorm? Look at the pictures and answer. What was she doing at the time of rainstorm? She was at home ____________________. doing her homework Look at the pictures and answer. What was he doing at the time of rainstorm? He was _______ at the library after school. reading Look at the pictures and answer. What was he doing at the time of rainstorm? He was ____________ from the supermarket. walking home Look at the pictures and answer. What was she doing at the time of rainstorm? She was ________________ after work. waiting for the bus Read the sentences. Underline the verbs which show an ongoing action in the past. What were you doing while it was snowing heavily? I was travelling on the train then. What were your family doing when the typhoon hit? My children and I were reading together. When my neighbour called, my family were having dinner. We were driving home when the strong winds started. While we were driving home, the strong winds started. It was raining hard while we were driving back. 4a Q: What are the forms of verbs in the past continuous tense? was travelling was reading were having were driving be doing was were Let’s learn and summarize! Let’s learn and summarize! 用于过去进行时和一般过去时的动词分别有什么特点？ We were driving home from our relatives’ house when the strong winds started. It was raining hard while we were driving back. We almost got into an accident when a truck nearly hit us. Yes, but when we got home later, we found water everywhere. 用于过去进行时的动词多是延续性动词；用于一般过去时的动词多为表示短暂动作的动词。 Let’s learn and summarize! 含有when或while引导的时间状语从句的主句是否需要用过去进行时？ We were driving home from our relatives’ house when the strong winds started. It was raining hard while we were driving back. We almost got into an accident when a truck nearly hit us. Yes, but when we got home later, we found water everywhere. when或while引导的状语从句，其主句可以是过去进行时，也可以是一般过去时，需要依照具体语境而定。 过去进行时的用法： Let’s learn and summarize! We were driving home from our relatives’ house when the strong winds started. It was raining hard while we were driving back. We almost got into an accident when a truck nearly hit us. Yes, but when we got home later, we found water everywhere. 表示过去某一时刻或某一段时间正在进行的动作 (at） 表示一个动作发生时，另一个过去的动作正在进行(when) 表示两个过去的动作同时进行，这时可用while连接 过去进行时多用在叙事类文本中，起到提供背景和渲染氛围的作用，制造身临其境的效果。 用法 时间状语 表示过去某一段时间内正在进行的动作 常用时间状语：this morning, the whole morning/afternoon, all day yesterday, all night, from 10:00 to 12:00 yesterday, in those days 等 表示过去某一时刻正在发生的动作 常用时间状语：at that time, at this time yesterday, at 3 o’clock yesterday afternoon 等 表示过去某个动作发生时，另一个动作正在进行 与 when 引导的时间状语从句连用（主句用过去进行时，从句用一般过去时） 与 while 引导的时间状语从句连用（主句用一般过去时，从句用过去进行时） 表示过去某两个延续性动作同时进行 多与 while 引导的时间状语从句连用 过去进行时的时间状语 用when/while填空 1. ______ I was reading a book, my best friend called me. 2. He was doing his homework ______ the light went out suddenly. 3. ______ we were having a picnic, it began to rain heavily. 4. My mom was cooking ______ I got home from school. 5. ______ the teacher came into the classroom, the students were  talking loudly. While/When when While/When when When 用when/while填空 6. She was listening to music ______ her brother was playing the piano. 7. ______ I saw him, he was running on the playground. 8. They were playing basketball ______ it started to snow. 9. ______ my father was watching TV, I was doing my homework. 10. I was walking in the park ______ I met an old friend. while When when While when 单项选择 1. Tilly Smith _______ along the beach with her family when she _______ the strange waves. A. walked; noticed B. walks; notices C. was walking; noticed D. is walking; notices 2. The children _______ games in the playground from 3 p.m. to 4 p.m. yesterday. A. play B. played C. are playing D. were playing C D 单项选择 3. He was reading a storybook _______ the light went out suddenly. A. though B. when C. after D. so 4. ----________ did the accident happen, Mr. Wang? ----While we _______ a math class yesterday morning. A. While; have had B. While; have C. When; were having 5. The girls _______ so happily that they didn`t see the teacher walking towards them. A. were chatting B. chat C. have chatted D. will chat B C A 过去进行时的结构 基本结构： 否定形式： 一般疑问句： 肯定回答： 否定回答： 特殊疑问句： 主语+was/were + doing +其他. 主语+wasn’t/weren’t +doing+其他. Was/Were+主语+doing+其他？ Yes, 主语+was/were. No, 主语+wasn’t/weren’t. 特殊疑问词+ was/were +主语+doing+其他？ 一般情况直接加-ing look → looking、work → working 以不发音的字母 e 结尾：去 e 加 -ing take → taking、write → writing 以“辅音字母+元音字母+辅音字母”结尾的重读闭音节动词如果末尾只有一个辅音字母，要双写这个辅音字母，再加-ing shop → shopping、sit → sitting、plan → planning 以 ie 结尾的动词：变 ie 为 y 加-ing lie → lying、tie → tying、die → dying 现在分词的构成 注意：易错特殊情况（必记） （1）单音节动词以 w、x、y 结尾（辅 + 元 + 辅）：不双写，直接加-ing draw → drawing、fix → fixing （2）非重读闭音节（辅 + 元 + 辅）：不双写，直接加 -ing open → opening 19 Combine each pair of sentences using when or while. 4b 1. I did my homework. The typhoon landed on the coast. ___________________________________________________________ 2. The power went out. My father and I made dinner. ___________________________________________________________ 3. Kate wrote a letter. Her brother called to warn her of the storm. ___________________________________________________________ 4. My parents packed the supplies. I moved our things off the floor. ___________________________________________________________ S. I slept soundly. It rained cats and dogs. ___________________________________________________________ I was doing my homework when the typhoon landed on the coast. The power went out while my father and I were making dinner. Kate was writing a letter when her brother called to warn her of the storm. My parents were packing the supplies while I was moving our things off the floor. I was sleeping soundly while it was raining cats and dogs. Complete the passage with was, were, when, or while. 4c When Jenny looked up, thick black clouds were forming in the sky, and the rain ______ beating against their roof. “Quick, this way,” said Dad. The family ran to the safe room at once. ____________ they were waiting, Jenny’s little sister started to cry. Dad gave her some chocolate and told her that they ______ hiding from an angry lion. Soon, she was laughing again. At last, the storm passed. ______ they stepped outside, they found the sun shining. People were asking one another if they were safe while some ______ starting to clear the streets. Jenny smiled. The tornado was scary, but it also brought everyone closer together. was When / While were When were The family ran to the safe room at once. _______ they were waiting, Jenny’s little sister started to cry. Dad gave her some chocolate and told her that they _______ hiding from an angry lion. Soon, she was laughing again. At last, the storm passed. _______ they stepped outside, they found the sun shining. People were asking one another if they were safe while some _______ starting to clear the streets. Jenny smiled. The tornado was scary, but it also brought everyone closer together. When Jenny looked up, thick black clouds were forming in the sky, and the rain _______ beating against their roof. “Quick, this way,” said Dad. was were While When  were 抬头看 厚厚的乌云 形成 拍打 立刻 躲避 发现阳光闪耀 清理 bring everyone closer together 让大家的心靠得更近 龙卷风 4c Imagine that you are a reporter. Interview a member of Jenny’s family and find out what he or she was doing around the time of the tornado. 4d A: What were you doing when the tornado hit? B: My family and I were hiding in a safe room. A: What were you doing while you were waiting there? B: Oh, while I… What were you doing when the tornado hit? My family and I were hiding in a safe room. Sample A: What were you doing when the tornado hit? B: My family and I were hiding in a safe room. A: What were you doing while you were waiting there? B: Oh, I was holding my little sister to keep her calm, while my dad was telling us stories. A: What happened when you came out? B: When we walked outside, we saw our neighbours. They were cleaning up the broken branches in their yard while we were checking our own house. Everyone was helping each other. A: It's good to hear that. What are your feelings now? B: I'm still a little scared, but I also feel warm. When I saw everyone working together, I knew we would be okay. 课后练习题 用所给词适当形式填空。 What ________ you ________ (do) when the typhoon came? While my father ____________ (check) the weather, my mother was cooking. They ____________ (play) basketball at that time yesterday. When I ________ (arrive), it was raining heavily. She ____________ (sleep) while I was reading. The wind ____________ (blow) strongly when we went out. My sister __________________ (not watch) TV at 8 last night. ________ it ____________ (snow) when you got up this morning? were doing was checking were playing arrived was sleeping was blowing wasn't watching Was snowing Homework 1. 背诵 4a 的例句，默写 when/while 的用法口诀。 2. 完成 4b、4c 的错题订正，抄写正确句子 3 遍。 3. 用过去进行时写一篇 50 词左右的短文，描述自己的台风经历。 2. Whose birthday is it? Thanks for watching! $