山东省宁阳县第二十五中学八年级英语下册《Unit3 What were you doing when the UFO arrived（第1课时）》学案（无答案） 人教新目标版
课题名称 八年级下册Unit3
What were you doing when the UFO arrived ? 课时 共5课时 授课班级
第1课时 总课时数 11
教学重点 过去进行时
was / were + doing sth.
教学难点 过去进行时时态的熟练运用，when 和while 的用法区别
课前准备 The learning papers ,the PPT ,the listening materials ,the notes.
学
案
一 预习.
(一)学习方式：按要求自主完成下列内容.
(二)预习内容：
1、朗读并识记P18-19的单词及短语.
2、翻译P18-19的句子.
(三）预习检测：补全句子
1.-What were you doing when the thief got into your house?-I was ______________(做晚饭).
There is a new_______________(理发店) next to my house.
I was waiting for a bus when the UFO______________(降落) the street.
The giel was shopping when the alien _______________(出来) the UFO.
预习质疑：
.
学习目标：1.Learn to talk about past events.
2. Use “when/ while”and the past progressive tense.
二、：
（一）：组内交流课前自主学习内容.
点拨：
过去进行时
1.含义：表示过去的某一时刻或某一时间内正在进行或发生的动作。 2.构成：was/were +v-ing。 3.标志：at that time, this time yesterday, all the evening, from 8:00 to 10:00yesterday, just then, at nine yesterday, when等表示明确有具体的时间状语。eg：
I was doing my homework at this time yesterday.
What was Tom doing at ten yesterday.
I was eating dinner when the phone rang.
when与while用法
1.when是“当……时候”，相当于at that time,既可以表示某一时刻又可以表示某一段时间，所以when引导的时间状语从句动词既可以是延续性的，又可以是非延续性的。when引导的时间状语如果是一般过去时，主句一般用过去进行时。而while也意为“当……时候””，相当于during the time，表示某一段时间历里的情况，故其引导的时间状语从句中的动词必须是延续性的。eg：While I was watching TV, my mother came back.=When my mother came back, I was watching TV.
2.while重在强调其后的动作与助于动作的对比，表示“与此同时”。eg：
She was listening to music while I was playing computer games.
（）针对性练习
1）_____ the teacher came in, we were talking and laughing.
2)I got home______ my mother was cooking dinner.
3)They were dancing _____ we came to meet them.
4)_______the alien was visiting the museum, the boy called the police.
：1.Answer the questions:
Do you know UFO?
Have you seen it?
What were you doing when the UFO arrived?
2.完成1a 2a 2b 听力.
3. 3c .
Groupwork .Make conversations .进行替换练习会话.
课堂小结:
四．：
（一）．选择填空：
1. Who jumps ________ in your class?
A. far
B. Farther
C. Farthest
D. longer
2. You must have _______ Beyonce, and she is a very famous singer who sang a song for the 77th Annual Academy Awards(第77届奥斯卡金像奖颁奖典礼).
A. heard fromB. heardC. heard on D. heard about
3. We must hurry up, and the plane will _______ in five minutes.
A. leaveB. goC. take off D. lands on
4. Ted ___ while he ___ his bicycle and hurt himself.
A.
fell, was ridingB. had fallen, rode
C. fell, were ridingD. had fallen, was riding
5. The reporter said that the UFO ___ east to west when he saw it.
A. was traveling B. Traveled C. had been traveling D. has traveled
6. When I arrived at his office, he ___ on the phone.
A. spoke B. was speaking C. had been speaking D. had spoken
7. His computer is ____ expensive _____ Tom’s.
A. as; asB. so; asC. much; asD. as; than
8. Tom ___ into the house when no one ___.
A. slipped, was looking B. slipped, had looked
C. had slipped, looked
D. was slipping, looked
（二）．用介词或介词短语填空。
1.They were talking ____ the phone .
2.I was ____ the barber’s chair .
3.The boy was walking ____ the street when a UFO landed .
4.I had a very unusual experience ____ Sunday .
5.The alien visited the Museum ____ Flight .课