八年级英语上册Unit6NationaldisastersGrammar2精品学案牛津译林版

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1、八年级英语上册 Unit 6 National disasters Grammar（2）精品学案 牛津译林版主备人总 10-6 课时上课时间课 题8A Unit6 Natural disastersGrammar(2)past continuous tense with “while” and “when”学习目标知识目标单词：Snowball ,snowman , hit词组：Make a snowman ,fall over能力目标能够了解并掌握用when和while引导的时间状语从句与过去进行时连用的几种情况。情感目标学习重点学习用when和while引导的时间状语从句与过去进行时连用的

2、几种情况。学习难点在过去进行时中正确使用when和while 。课 前 自 学*找出用when / while引导的时间状语从句与过去进行时连用的情况.查资料搞清楚它的用法.一根据汉语意思翻译下列句子。1. 当发生地震时，我正在购物。I _ _ some shopping when it _.2当玻璃、瓦片往下掉的时候，人们正慌乱地跑着。People _ _ wildly while pieces of glass and bricks _ _ down.3我正在寻找出路时，突然我听到头顶上有声音。I _ _ to find my way out when I suddenly _Some n

3、oise above me. 二.讨论：有时为了句子表达的需要,我们可以用复合句来表达过去进行时.如以上3句。在过去进行时中when和while用法及其区别。 昨晚当我到家的时候,妈妈和爸爸正在看电视. My parents_(watch) TV when I arrived home last night. 刚才当老师走进教室的时候,学生们正在读书. Students _(read)when the teacher came in just now.在这些句子中,when引导的句子表过去的某一个具体的时间,when从句用一般过去时,而它的主句用过去进行时. 但是若强调某个动作正在进行中时,又

4、发生了别的动作,用when从句. when从句必用过去进行时,主句用一般过去时.(表示在when从句正进行期间又发生了主句的动作)此时, when=while,表时间段.如 _we were having supper, the light went out. _he was riding a bike, he fell off and hurt his leg. 若主,从句两个延续动作同时进行,用while,则主句与从句都用进行时, 此时,while译为“而” “一边,一边”,如:. He was reading the newspaper _ I was studying.三（热身一下吧）

5、用 when和while填空。1My mum was sleeping _ my aunt came to visit her.2. My father was working in the garden _ I was sitting in the sun.3._ he came yesterday, we were playing basketball.4._ we were laughing , the teacher came in.5._ the Whites were having supper, I knocked at the door.五.完成句子.1.当到Simon的时候,

6、Amy正在从地上取雪._ Simon _ , Amy _ _ some snow from the ground.2.正当Danial在做雪球时, 他摔倒了._ Danial _ _ a snowball , he _ _.3.Suzy在堆雪人的而Kitty就站在她的旁边.Suzy _ _ a snowman _ Kitty _ _ beside her.4.正当Mary在拍照的时候,Andy朝她跑了过来.Andy _ towards Mary _ she _ _ _.5.正当我在买东西的时候,地震发生了.The earthquake _ _ I _ _ some shopping.6.刚才我

7、看见李平和他的父母在路边等公共汽车.I _ Li Ping and his parents _ _ the bus _the side of the road.课 堂 交 流 展 示 展示一:在组内和班内展示课前自学中重要的短语及句型.展示二(1):根据图形用正确的时态回答问题.例句T: What was the girl doing when I came? S: She _ _ when I came.= When I came , she _ _.(2)小组模仿回答。并根据课本100页A2回答下列问题。What was Mr. Wu/Simon/Millie/Sandy doing wh

8、en the snowstorm came? Mr.Wu _ when the snowstorm came. = _. Simon _ when the snowstorm came. = _. Millie _ when the snowstorm came. = _. Sandy _ when the snowstorm came. = _. 总结规律：句子1(延续性动作) （过去进行时）+ When +句子2（短暂性动作） （一般过去时） = When +句子2（短暂性动作），句子1（延续性动作）（注： When也可延续性动作）展示三:可用while改写例句I came while t

9、he girl was dancing= While the girl was dancing , I came .(2)用while改写以上第一题中的4个答句。 _.=_.=_.=_.= _. 总结规律：句子1(短暂性动作) （一般过去时） + while +句子2（延续性动作） （过去进行时）= While +句子2（延续性动作），句子1(短暂性动作)展示四:根据图形用连接两句含有过去进行时的句子. S1: What was she doing while we were watching TV? S2: She _ _ while we were watching TV. = While

10、 we were watching TV ,she _ _ . 总结规律：句子1(延续性动作) (过去进行时) + while +句子2（延续性动作） （过去进行时）=While + 句子2(延续性动作) , 句子1(延续性动作).展示五:让两个学生同时表演不同的动作，其他学生用while造句。展示六:完成课本101页练习。核对答案并朗读。 课 堂 达 标 检 测一 用所给单词的适当形式填空。1. Your cousin _(not play) basketball when I saw him.2. When I _(leave) home ,my sister _(eat) breakfa

11、st.3. When I came to see him , Daniel _(search) for some information on the Internet.4. Girls _ (dance) while boys _ (sing).5.When the teacher looked for them , where _ they _( play ) football.6. When I saw you , who _ you _(talk) with?二用when 和 while填空1.Mother was cooking _father was watching DVD la

12、st night.2._ Tommy got there , the famous scientists was giving a talk on traveling.3._ the famous scientists was giving a talk on traveling,Tommy got there.4. The singer waved to us _ she was singing the song.5._ they were playing basketball , we were cheering for them.6. The telephone rang _ David

13、 was sleeping last night.7._ the telephone rang , David was sleeping last night.8._ my uncle came to see me, I was reading.三.翻译句子我妈妈正在做饭，我爸爸在看报纸当老师进教室时，学生们在相互聊天当孩子们正在上课的时，地震发生了.当我购物时，我突然听到了一声象雷一样的巨响学习感悟：课时10-6的答案:(一)1.wasnt playing 2.left ,was eating 3.was searching 4.were dancing ,were singing 5.we

14、re playing 6.were talking(二)1.while / when 2.when 3. while/ when 4. while/ when 5. while/ when 6. while/ when 7.when 8.when(三)1.My mum was cooking while my dad was reading newspaper.2.When the teacher came in ,the students were chatting with each other3.When the children were having lessons, the earthquake started.4.When I was doing some shopping ,suddently I heard a big noise like thunder.