What were you doing when the UFO arrived
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 looking共2页，当前第1页12
What were you doing when the UFO arrived
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：
共2页，当前第2页12