8AUnit8-4教学案

1、润州区片区合作八年级（上）英语教学案课题： Unit8 Natural disaster Grammar主备：黄跃 课型：新授 审核：区八年级英语备课组 班级 姓名 学号 【教学目标】1. 知识目标：掌握下列单词、短语和句子，并能熟练朗读和使用。单词：break短语：on the side of the road, break down 句型：I was (not) sleeping at 10 p.m. last night. I was sleeping when the earthquake started. People were running in all directions w

2、hile pieces of glass and bricks were falling down. As I was trying to find my way out, I suddenly heard some noise above me. When/While/As Millie was watching TV, Andy came into the room.Millie was watching TV when Andy came into the room.2. 学会使用过去进行时。3. 学会使用when、while和as。【教学重难点】掌握过去进行时及when、while和a

3、s的用法。【教学手段】PPT【教学过程】Step1 Lead-in Revise the passage in Reading. Ask some questions.Step2 Presentation and practice I 1. Present some sentences with the past continuous tense. 2. Explain the usage of the past continuous tense. 3. Finish the exercises.Step3 Presentation and practice1. Show pictures t

4、o present sentences in the structure of while. 2. Explain the usage of while. 3. Finish the exercises.Step4 Presentation and practice1. Show pictures to present sentences in the structure of when and as. 2. Explain the usage of when and as.3. Finish the exercises on P97 & P98.Step5 HomeworkFinis

5、h off the exercises on the sheet .【语法小贴士】过去进行时1. 概念： 我们可以用过去进行时表示某一时刻正在进行的动作或过去某一阶段一直在进行的动作。如： I was doing my homework at 8p.m. last night . 昨晚8点我正在做家庭作业。What were you doing last month? 你上个月一直在做什么？2. 构成： 由“be动词的过去式was / were + 现在分词”构成。 过去进行时的肯定结构是由“was/were + 现在分词”构成，否定结构是由“was/were +not+ 现在分词” 构成.

6、如：The boy _ _ the house.那个男孩正在打扫房子。We _ _ _ at this time yesterday. 昨天这个时候我们没在购物。3.用法1）表示过去某个时刻或某一时间段内正在进行的动作。 昨晚8:30 她在做什么?_ _ she _ at 8:30 yesterday evening? 有人敲门时我正在看书。I _ _ when someone knocked at the door.2) 与always, all the time, very often等这类副词连用，表示一个不断重复的过去的动作，该动作使说话者产生喜悦、不满、厌烦等情绪。 这个男孩总是问我

7、同样的问题。The boy _ always _ me the same question.3) 表示故事发生的时间背景。 那是一个漆黑的夜晚，而且下着大雪。It was a dark night and it _ _ heavily.4时间状语1）过去的某个时间点或时间段。如： at this time yesterday at that time at 9 yesterday morning this morning the whole afternoon all day yesterday from 9 to 10 last night2) 由when和while等引导的时间状语从句。

8、我游览北京时，喜欢步行参观。 _ / _ I _ _ Beijing, I liked to travel on foot. 5. 有些动词通常不用于进行时，主要有：1）表心里状态或情感的动词，如love、hate、like、know等。2）部分联系动词，如seem、appear 等.3）感官动词，如see、hear feel、smell、sound、taste等. 4）短暂性动词，如decide、stop等.When, While和as 的用法1.When, While和as 这三个词均有“当时候 ”的意思。There were fewer sandstorms when my grandp

9、arents were young.我祖父母年轻时沙尘暴要少些。While Millie was watching TV, her mum was sleeping.米莉在看电视时她妈妈在睡觉。I saw a traffic accident as I was riding to school this morning. 今天早上我骑车上学时看见一起交通事故。 练一练：1）我到那里时，她正在拉小提琴。She _ _ the violin _ I got there.2）那时我在做饭，她在弹钢琴。I was cooking _ she _ _ the piano then.3）当妈妈回来时，婴儿

10、在睡觉。_ the mother came back, the baby _ _. .2.When和as 既可以指某一点时间，也可以是指某一段时间，其从句谓语动词表示的动作既可以是瞬间的性的，也可以是延续性的;While指一段时间，从句中的谓语动词必须是延续性的。既：指一段时间时，when, while和as 都可以；指一点时间，只能用when,和as ，不能用while。试比较：用when, while ,as填空1) _/_ he woke up, it was 8.2) _ /_/_ I was waiting for a bus, I met her.3) _ We were clim

11、bing the hill, they were rowing boats.3.when和while的区别见书本P124.【课堂巩固】一、单项选择。( ) 1. -The light in our room was still on at 11:00 last night.-Yes, I _ for the coming exams.A. was studyingB. studied C. am studyingD. will study( ) 2. My mother was washing the dishes while my father_ TV.A. was watchingB. i

12、s watchingC. watchesD. watched( ) 3. - What were your parents doing _ you got home? - My mother was watching TV _ my father was writing a report.A. when, whenB. while, whileC. while, whenD. when, while ( ) 4. I _ my homework when the door bell_.A. did, rangB. was doing, was ringingC. did; was ringin

13、gD. was doing; rang( ) 5. I _ a traffic accident as I _ to school this morning.A. saw, rodeB. saw, was ridingC. was seeing, rodeD. was seeing, was riding二、用所给动词的适当形式填空。1. John _ all day yesterday. (work) 2. When the teacher_ in, we were talking loudly. (come)3. -_John _ TV at ten oclock last night?(

14、watch) -No, he _ (not watch) TV at that time.4. -What _you _from seven to eleven last night? (do) -I _ in class. (study)5. Mr. King _ (see) a big dog while he _ (drive) to work yesterday. 6. - Would you please show me your radio? - I am sorry. I _ to music. I did not catch you. Would you please say

15、it again?(listen) 7. When I _ (wait) at the bus stop this morning, I _ (see) a car run into a bus. 8. The little girls sang as they _. (play)9. I saw the traffic accident _ yesterday. (happen)10. I heard the birds _ happily in the tree when I walked past. (sing)【课后巩固】一、阅读书本P97-98，在课文中找出并划出下列词组，把答案写在

16、横线上。1. 一场可怕的暴风雪_ 2. 绊倒_3. 在公路的一边_ 4. 出故障，坏掉_5. 由于寒冷的天气_ 6. 打电话给某人求救_7. 堆一个雪人_ 8. 藏在树后_二、完成句子。1他的车子因为寒冷的天气而出故障了。 His car _ _ _ _ the cold weather. 2. 昨天当我在上网时，我弟弟在做作业。 My younger brother _ _ _ _ while I _ _ the Internet yesterday.3. 当我给大卫和艾米打电话时，他们正在玩电脑游戏。 David and Amy _ _ computer games _ I _ them.

17、4. 当他们正在闲聊时，突然听到一声像打雷似的巨响。 As they _ _with each other, they _ _ a big noise like _.5. 我今天早上看到她时，她正在等车上班。 _ I _ her this morning, she _ _ _ the bus to work.三、短文填空。 Bad weather sometimes causes natural disasters and a 1 . My online friend Jim told me that there was a terrible storm with t 2 and lightn

18、ing, and his uncles house caught fire because lightning hit it. His uncle phoned 119 using his mobile phone. The f 3 arrived in five minutes and put out the fire soon. But the fire burnt his uncle and aunt and all the things in the house were burnt. And then the heavy rain l 4 nearly a week in his hometown and it c 5 a terrible flood. The flood w 6 away their village and killed