Unit5 SectionA Grammar focus 4a-4c 教案2021-2022学年人教版英语八年级下册

2023-01-05
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Unit 5 What were you doing when the rainstorm came? 第三课时 Grammar focus - 4c 1、教学目标: 学生能够用过去进行时谈论过去发生的事情,能够正确运用when和while引导的时间状语从句。 2、教学重难点 when 和while 引导的时间状语从句的用法及区别 教学步骤: 一、精彩回顾 用所给词的适当形式填空 1.—What___ you____ (do) when he arrived? —I ___________(watch) TV at that time. 2.Bob _________ (shop) when I ____(go) to the park. 3.I saw some kids_______(play) football over there. 4.She ________(read )books while her mother ________(cook) yesterday afternoon. 5.It's raining________(heavy) outside. 2、 预习热身 写出下列动词的现在分词形式(v-ing)和过去分词形式(v-ed) 1. take_________ ____________2. play _________ ____________ 3.clean_________ ____________4. shop_________ ____________ 5. sleep_________ ____________6. buy_________ ____________ 7. leave_________ ____________8. turn_________ ____________ 9. kid_________ ____________10. hit_________ ____________ 三、自主学习、小组合作交流 1. 小组成员大声朗读Grammar Focus,总结过去进行时的用法,完成探究(一) - 过去进行时表示在过去某一时刻或某一段时间段正在进行的_______或存在的______。经常和表示___________(现在/ 过去)的时间状语连用,如:at this time yesterday,when I called him, from 8:00 to 9:00 last night, at 7:00 last night等。 2. 结构:主语+_________/ _________ + 动词_________ +时间状语 3. 把肯定句变为否定句时,将 was 改为________,将were 改为 ________;一般疑问句是将_______或________提到句子前。 2. 观察以下句子,思考when 和while 的用法和区别,完成合作探究(二) ① I was walking to school when I saw a cat in a tree. ②When Sally arrived home, her mother was cleaning the house. 主句的动作是持续性的,而从句动作是短暂性的,此时用 ______ 引导时间状语从句,主句用 __________ 时态,从句用一般过去时态。 ③ While I was sleeping in the bedroom, someone knocked at the door. ④ David fell while he was riding his bike. 主句的动作是短暂性的,从句的动作是持续性的,此时用 _______ 引导从句,主句用 __________ 时态,从句用过去进行时态。 ⑤ While Andy was waiting for the bus, he was reading a newspaper. ⑥ He was cleaning his car while I was cooking. 主句和从句的动作在过去的某时刻或某段时间同时发生,而且动作都是持续性的,此时用 _________ 引导从句,而且主句和从句都用 ____________ 时态。 3. 小组合作完成4a,4b,4c的练习。 三、学生展示、教师点拨 1)主句用过去进行时+when 引导的从句用一般过去时 2主句用过去进行时+while引导的从句也用过去进行时 4、 当堂记忆 (过去进行时用法口诀) 过去进行表过去,时态结构记清晰, was,were,助动词,动词-ing

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Unit5 SectionA Grammar focus 4a-4c 教案2021-2022学年人教版英语八年级下册
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