Unit5 nature's temper (sectionA 4a-4d Grammar Focus)课件 2025-2026学年人教版八年级英语下册

unit5 Nature’s Temper Section A 4a-4d 1 Teaching Objectives 1.学生能够掌握过去进行时的结构 (was/were + v.-ing) 及其句型结构，同时能够区分when和while引导的时间状语的差异。 2.学生能够运用过去进行时描述自然灾害发生时人们正在做什么，或解释灾难发生的原因。 3.学生理解在灾难叙事中时间顺序的重要性，并思考“预防”与“应对”的关系。 2 content Presentation 02 Practice 03 Lead-in 01 Production 04 Summary 05 3 Lead-in What were they doing at the time of _________ ? They were ____________ when their neighbour called. flood having dinner 4 Look at the pictures and fill in the blanks. What was she doing when the __________ came? She was _________________ when the building shook all of a sudden. earthquake doing her homework What was she doing when the ________ was burning? She was __________ at that time. wildfire shopping Look at the pictures and fill in the blanks. What were they doing while the _________ was blowing? typhoon having dinner The boy was ______________ on TV while his mother _____________ the floor. watching news was sweeping presentation She was doing homework when the building shook all of a sudden. They were having dinner when their neighbour called. She was shopping at that time. The boy was watching news on TV while his mother was sweeping the floor. was/were +v.-ing 8 过去进行时 定义： 表示过去某个时刻或某一时间段正在进行或发 生的动作。 时间标志词： at this/that time yesterday, at 9:00 yesterday morning, all night等； 或以when, while 引导的时间状语从句。 Read the chart and underline the past continuous tense. 10 构成： 基本结构：主语+was/were + doing +其他。 否定形式：主语+wasn’t/weren’t +doing+其他。 一般疑问句：Was/Were+主语+doing+其他？ 肯定回答：Yes, 主语+was/were. 否定回答：No, 主语+wasn’t/weren’t. 特殊疑问句：特殊疑问词+ was/were +主语 +doing+其他？ when 和 while 用法小结 相同点： when 和 while 都可以作从属连词。 引导时间状语从句。 都有“当……的时候”的意思。 引导的时间状语从句 从句中的谓语动词 动作发生时间 when while 不同点1： 指时间段和时间点 可以是延续性动词和终止性动词 一般指一段时间 表状态的延续性动词 一前一后或同时发生 同时发生 有时when可以代替while，而while则不能代替when。 Practice makes perfect. It was raining ________ they arrived. My mother came back ________ I was cleaning my bedroom. when while 14 1. While Alan was writing a letter, the children _____ outside. A. play B. were playing C. will play 2. Jack _____ a shower when his mother rang him up. A. takes B. has taken C.is taking D. was taking Practice makes perfect. 3. — I saw the light of your room was still on at two o’clock last night. — Oh, I _____ a football match of the Russia World Cup. A. watched B. was watched C. am watching D. was watching 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. 5. I slept soundly. It rained cats and dogs. Combine each pair of sentences using when or while. 17 4b Combine each pair of sentences using when or while. I was doing my homework when the typhoon landed on the coast. While my father and I were making dinner, the power went out. Kate was writing a letter when her brother called to warn her of the storm. While my parents were packing the supplies, I was moving our things off the floor. I was sleeping soundly while it was raining cats and dogs. 18 4c Complete the passage with was, were, when, or while. 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 While were When were 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. 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 ... Thanks 21 $