初中英语人教版八年级下册Unit 5 What were you doing whe.doc

Unit 5 What were you doing when the rainstorm came? Grammar Focus(4a-4c)教学设计Step 1.Revision: 过去进行时1.定义:过去进行时，是表示_某个具体时刻正在进行的 事情或动作。 结构: 由_（现在分词）构成 用法:这一特定的过去时间除有上下文暗示以外，一般用时间状语来表示，常用的时间状语at the time of，at this time yesterday，at that time，at ten last night， when+从句， while+从句2.（过去进行时）句式结构1.)肯定式： 主语+was/ were +V-ing2.)否定式: 主语+was/ were not +V-ing3.)一般疑问式及其回答： Was / Were + 主语 + V -ing? Yes， 主语 +was/ were. No，主语+wasnt/ werent.4.)特殊疑问式： 特殊疑问词+was/were+主语+V-ing?Step 2.Learning aims:1. 熟读并会翻译Grammar Focus中的句子。2. 掌握when 与while在过去进行时中的用法。3.完成 4a、4b、4c中的练习。Step 3.Self-study自主学习提纲：Task1. Read the sentences in Grammar Focus and translate them.Task2. 在Grammar Focus中划出when 与while引导的时间状语从句中的动词，判断这些动词是延续性动词还是非延续性动词并注意时态。Task3. 仿4a中的例句,用while 与when造句(判断动词是延续性动词还是非延续性动词并注意时态)。Task4. 完成导学案第二题“when和while的区别”。Task5. Complete 4b、4c。Step 4. Discussion :Work in groups:1.小组合作探究，核对自学任务中的答案。2.核对导学案第二题的答案。3.解决自学中自己不能解决的问题。Step 5. Show time一.Translate the sentences in Grammar Focus1.What was she doing at the time of the rainstorm?She was doing her homework.2.What was he doing when the rainstorm came? He was reading in the library when the rainstorm came.3.What was Ben doing when it began to rain heavily?When it began to rain, Ben was helping his mom make dinner.4.What was Jenny doing while Linda was sleeping?While Linda was sleeping, Jenny was helping Mary with her homework. 二.4a. Look at the table and write sentences with both while and when.JohnMarytake photosbuy a drinkplay the pianoleave the houseclean his roomturn on the radio4b.Fill in the blanks with was, were, when or while.At 7:00 a.m., I woke up. _ I _ making my breakfast, my brother _ listening to the radio. _ I was eating, the radio news talked about a car accident near our home. My brother and I went out right away to have a look. _ we got to the place of the accident, the car _ in bad shape from hitting a tree. But luckily, the driver _ fine. The roads _ icy because of the heavy snow from the night before.4c.What were you doing at these times last Sunday? Fill in the chart. Then ask your partner. Make up a conversation.Step 6. Guide:一.延续性动词和非延续性动词延续性动词指动作可以延续一段时间, 而不是瞬间结束。如: work，study，have，keep等。非延续性动词指动作极为短暂，瞬间结束。如: buy，die，lend, borrow等。二.when和while的区别(导学案)when既指时间点，也可指一段时间; while只指一段时间， when引导的时间状语从句中的动词可以是，_也可以是_，而while从句中的动词必须是_。 由when引导的时间状语从句，主句用过去进行时，从句应用 _ ;如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用_引导。三.知识拓展一.when和while除了“当的时候”的意思， 另外when表示“在那时”；while表示“而，然而，但（是）之意”。如： 1）The children were running to move the bag of rice when they heard the sound of a motor bike. 孩子们正要跑过去搬开那袋米，这时他们听到了摩托车的声音。 2）He is strong while his brother is weak. 他长得很结实，而他弟弟却很瘦弱。 Step 7. Exercises1.I _ (watch)TV at eight yesterday.1.)(改为否定句) I _ TV at eight yesterday. 2.)(改为一般疑问句，并作肯定回答) _ you _ TV at eight yesterday? _2. 1.I was watching TV at eight yesterday. What _ you _ at eight yesterday? 二.Saying谚语1.When the cat is away，the mice will play. 2.When an ant（蚂蚁）says ocean,he is talking about a small pool.3.Whilethereislife,thereishope.4.Make hay（干草 ）while the s