whatwereyoudoingwhentheufoa|WhatwereyoudoingwhentheUFOarrived

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八年级英语（下）学案15课时
课题：unit3 what were you doing when the ufo arrived?  section b
励志小木屋：today must borrow nothing of tomorrow.今日事今日毕。
预习目标：1、知识目标：
2. 能力目标：1）.能联系上下文理解课文  2）.能谈论过去发事情
3）.能利用情景思维   3.情感目标：热爱科学，探索科学。
预习重点：while, when引导的时间状语从句，过去进行时
预习难点：while, when引导的时间状语从句，过去进行时
 一、自主预习：（一）预习任务： task1.  英汉互译：
climb a tree_______  be too scared_______ at the doctor’s _____________outside the house _______ 跳下_______ 逃跑，跑开 ____________在火车站_______ 喊某人的名字 _______
task2、通过预习3回答问题
 (二)预习诊断：下列各句均有一处错误，请指出并改正
1. the child was shopping while she saw the alien get out.
2. grandma was cooking breakfast when i was washing my face this morning.
3. i read a history book when someone knocked at the door.
4. what did you do at ten o’clock last sunday morning?
5. while the alien was in the museum, i was calling the tv station.
6. you can imagine how strange was it!
 (三)预习反思：do you have any question?
二．课中实施： 
step1.预习交流   step2. warming-up   step 3: lead- in   step4 practice 
step 5 精讲点拨:   what happened while linda was on the telephone?
琳达打电话时发生了什么？
happen 常指具体事件的发生，特别指那些偶然的或未能预见的事件的“发生”eg: a car accident happened yesterday.昨天发生了一场车祸。
如果表示“某人发生了某事”，常用结构“某事+happen(s) +to+某人”
eg: an accident happened to tom yesterday.
sb. happen to do sth. “某人碰巧干某事“
step 5 拓展延伸：词的适当形式填空

1. he ____ for me in the park yesterday.
2. i ___ when i saw a thief in the supermarket.
3. he saw an alien___ the ufo.
4. he____ some fruit from the fruit shop yesterday.
5. the girl_____ dinner when her mother came back.
step 6 summary
三、 限时作业    （每空一分，共10分）                得分率______
选择 1. there is a bird singing____ the green tree.  a.  in   b. on   c. into 
2. the leaves____ the tree are getting yellow.  a. in    b. on  c. into  
3. i can’t find my dictionary_____.
  a. somewhere   b. anywhere  c.  nowhere   d. not where
4. i ____ a book when he came in.
  a, am reading b. am looking c. was reading  d  was looking12
5. ____ coming to ask something about the car accident.
a. a police is  b. the police  c. the police is   d. the police are
6.. what were you doing when your father ____ back from work?
　 a.   was coming   b .  comes  c.  came   d. is coming
7. masha____ when the doorbell____.         a. is cooking, ring　　  b. was cook, rang　 　c.  was cooking, rang  d. cooked, rang
8. what____ while linda was on the telephone?
a.  was happened      b.  was happening      c.  happened       d. happens
9. ——what_____ you, tim? —— i failed my test.   a. happened          b.  happened to     c. was happening to        d. was happened
10. did you find your keys____?
  a.   somewhere        b.  anywhere       c.  everywhere         d. nowhere
homework: 句型转换
1. i was playing the guitar at this time yesterday？(划线提问)
_____ _____ you _____ at this time yesterday?
2. she washed clothes last night.(改过去进行时)
 she _____ _____ clothes last night.
3. he is looking at the souvenirs now. (用now 改写)
 he ____ ____ at the souvenirs ____ _____ _____.
4. you’d better go to see her tomorrow.( 改否定句)
 you’d ___ _____ ____ to see her tomorrow
5. i think there’s something interesting in his story.( 同4)
i_____ ____ there’s _____  interesting in his story.
学后反思：
 

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