Unit 5 Grammar Focus (4a-4d)（word教案）-【优翼·学练优】2025-2026学年八年级英语下册同步备课（人教版）

该初中英语教案聚焦过去进行时的形式、功能及when/while的用法，通过台风图片导入，先引导学生描述当下情景（现在进行时），再迁移至过去场景（过去进行时），通过对比建立时态联系，搭建学习支架。 此资料以“导入-探究-规则-练习”系统推进，4a找延续性动词、4b合并句子、4d角色扮演等活动，既强化语言能力（口头书面应用），又培养思维品质（when/while辨析）。助力学生掌握时态运用，为教师提供清晰教学路径，提升课堂效率。

第四课时 Grammar Focus (4a-4d) 1、 Teaching Objectives In this class, students will: l. understand the form and function of the past continuous tense. 2. differentiate the use of “when”and“while”in the past continuous tense. 3. apply the past continuous tense orally and in writing. 2、 Teaching Advice Lead-in Look and Say 1. Show students a picture of a typhoon and ask them the question. · What is happening right now in the picture? 2. Have students imagine that if this situation happened yesterday and answer the question. · What was happening in the street when the typhoon hit? 3. Highlight be+v.-ing and was/were+v.-ing and ask students to compare the above sentences. Explore the Grammar 4a 1. Have students read the sentences and underline the verbs which show an ongoing action in the past. 2.Check the answers with the students. 3. Circle the words when and while in the box and let students think about the differences between these two words. Grammar Rules · 过去进行时的基本用法 表示过去某个时刻或某一阶段正在进行的动作 1.过去进行时表示在过去某个确定的时间点或某一段时间里正在发生的动作。因此,原则上,常和表示过去的时间状语连用，如:then,at this/that time,at nine,last night 等。E.g. What were you doing at nine last night? 2.有些情况下,句子中没有明确表示时间的状语,但从句子的上下文中可以得知这是在过去某一时间内正在进行的动作。 E.g. We didn't go shopping as it was raining heavily. 过去进行时中when 和while的区别 1.当when引导表示过去的时间状语从句时,后面可加延续性动词,时态用过去进行时;也可加非延续性动词,时态用一般过去时。 E.g. His mother came back when he was doing his homework. It was raining when I got up. 2.当while引导表示过去的时间状语从句时只能加延续性动词,时态用过去进行时,因为 while 表示较长的时间。 E.g. He fell asleep while he was watching TV. 3.当主句和从句时态都为过去进行时的时候,只能用while引导,不能用when引导。 E. g. I was reading while she was writing. · 过去进行时的句型 肯定句 主语+be(was/were)十现在分词+…… E.g. She was playing the piano when the bell rang. 否定句 主语十be(was/were)十not十现在分词+…… E.g. He wasn't reading when I came home. 一般疑问句 Be ( Was/Were)+主语十现在分词+……? E.g. Were you cooking at that time? 特殊疑问句 疑问词+be(was/were)+主语十现在分词+……? E.g. What were you doing when I called you? When were you dancing yesterday? · 过去进行时和一般过去时的区别 一般过去时只表示一个完成的动作,而过去进行时表示过去某一具体时刻或时间段内正在进行的动作。也就是说,用一般过去时只是表示有过这件事;用过去进行时则强调了动作的连续性。 E.g. The children watched TV last night.(只说明昨晚孩子们看过电视,但看了多长时间并不知道) The children were watching TV last night.(不仅陈述昨晚孩子们看电视这一事实,更强调他们看电视的时间贯穿昨晚整个时间段) Grammar Exercises 4b 1. Have students read the sentences and then combine each pair of sentences using when or while. 2. Select some students to share their answers. 4c 1. Let students read the passage and make sure they understand the meaning. 2. Ask them to complete the passage with was ,were ,when or while. 3. Check the answers and then ask students to read the passage together. 4d 1. Have students work in pairs and role-play the interview. Remind them to pay attention to the differences between when and while. 2. Invite some pairs to perform their conversations and give feedback on their tense usage and conjunction choices. Summary Ask students to summarize what they have learned in this lesson. Homework Finish the related exercises in the books produced by Youyi. Blackboard Design Write the grammar rules on the blackboard. Teaching Reflection The lesson effectively clarified past continuous rules and when/while differences through examples. Students grasped basic usage but struggled with choosing when/while in complex contexts. More paired practice with varied scenarios would help.Overall,objectives were met with room to strengthen students' application skills. 学科网（北京）股份有限公司 $