What were you doing when the UFO arrived

八年级下英语学案第13课时
【课题】：Unit 3 Section A (1a-2c)
【励志小木屋】：I don’t think much of a man who is not wiser today he was yesterday如果一个人今天没有比昨天变得更聪明，那我是不会看重他的。
【预习目标】：1.识记P18-19 单词、短语 2.理解一般过去时与过去进行时的区别。3.理解when, while 引导的时间状语从句
【预习重难点】：重难点：1.when, while引导的时间状语从句。
2.过去进行时。
一．自主预习
（一）预习任务
1.写出下列单词、短语： 在图书馆前面_________ 做饭_________ 理发_______ 睡过头________ 在浴室_________ get out of the shower___________ land on________ take off_______
barber shop_________
2.英汉互译：1). They wrote letters to their friends last night .

2). They were writing letters to their friends last night .

3).昨天我们上了一节英语课。_________________________________
4). 昨天八点钟我们上了一节英语课。_________________________________
5).当UFO到达的时候你正在干什么？__________________________________
（二）预习诊断. 词的适当形式填空：
1.I was in the____(barber) chair. 2. He ____( sleep) late when it arrived.
3. The alien visited the Museum of _____(fly).
4. What was the girl doing when the UFO_____ (take) off?
（三）预习反思 Do you have any questions ?
二．课中实施
Step 1 预习交流 Step2 Warming-up Step 3 Lead-in Step4 Pairwork
Step 4 精讲点拨 : 1. 过去进行时：表示在过去某一时间内正在进行的动作。
构成：was / were + 现在分词
用法：1）过去进行时表现过去某一时刻正在进行的动作。
eg. She was writing a letter when I came in .我进来时，她正在写封信。
2）过去进行时还表示过去某阶段正在进行的动作。
eg. They were waiting for you yesterday . 他们昨天一直在等你。
2.when/while区别 :
_________we were watching the movie ,you closed the door。
We were watching the movie , ___________you closed the door 。
When既可指时间点，也可指时间段。When引导的时间状语从句，主句用过去进行时，从句应用一般过去时。While指一段时间，其引导的时间状语从句，主句用一般过去时，从句用过去进行时，或主从句都可用过去进行时。
Step 5 拓展延伸：用when，while填空
1. __________ the alien was in the museum , I called the police .
2. The boy was walking down the street __________ a UFO landed .
3. _____ the alien was visiting the museum , the boy called the TV station .
4. I was cleaning my room ________ the fire broke out .
5. ______ Linda was shouting his name , some people looked at her .
6. __________ Linda finally saw Davy , he was jumping with a dog .
Step 6 系统总结
三、限时作业 满分 10 分 得分 ________
单选：1. ——What ____ you ___ at this time yesterday?
——My homework. A. did, do B. are , doing C. Were , doing
2.Where ___ you___ lunch yesterday? ——At school.
A. did , have B. were, having C. do, have
3.—____ there___ a report on how to learn English tomorrow afternoon?
—— I’m not sure. You may ask Dennis.
A. Will, have B. Is , going to have C. Will, be
4.There are some big trees____ our classroom.
A. in front of B. in the front of C. on the front
5. What were you doing____ the accident happened?
A. while B. when C. that
词的适当形式填空：6. While we____(have) dinner, the telephone rang.
7. You are always ____(kid). If you do the same thing again, I’ll be angry.
8. We____(read) books while they___(watch) TV yesterday.
9. ——The telephone is broken.
——It doesn’t matter. Maybe you could ____(repair) it by yourself.
10. What ____ you___ (do) when your mother came back?
Homework: 根据句意及首字母提示补全单词：
1.I need to cut my hair. Do you know where is the nearest b_____ shop?
2.While I was cleaning the room, mum was cooking in the k_____.
3.I don’t believe there are a_____ on the Mars.
4.What w______ your parents doing at 9 o’clock yesterday?
5.Don’t you think it is a______ to see a UFO land in front of you?
学后反思：

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