unit4 Our World /Topic 2 I am sure there are no UFOs.

八年级英语学案23
Unit 4 topic 2 section A
课型：新授 执笔：李亮存 审核：八年级英语教研组 2010 12 30
【学习目的标】
1.掌握I’m sure…和Are you sure… 句型。
2.谈论机器人的优点和缺点。
【重点难点】
take the place of 和 instead of 的用法。
repair 和mend的用法。
【课前准备】
一．知识回顾
1.Edision is a great_________.he________ many things.
The light is one of his great ________.(invent)
2.Just then ,he met a ______ animal.He was in ____(danger).
3.The photo can make me ________(think) of my grandmother,and it can make me ________(happiness).
4.Xiao ming likes ________,he wants to be a __________when he grows up.(science)
二．掌握下列单词的读音和词义
robot, scientist , appear , machine, truck , mend, take the place of, situation, repair
三．预习课文并找出下列短语，掌握运用
关于机器人的一些事 像…的一些东西
代替（动词短语）________________代替（介词短语）__________________
在一些情形下___________________非常确定 ________________________
拯救处于危险中的人 ____________________________________________修理机器 ____________________ 修路 ______________________
失业　___________________________使人类懒惰___________________
　做危险的工作_________________ 两年后_______________________
Robot can work without pay _____________________________________
四．知识连接
1.take the place of sb.=take once`s place 代替
eg. Miss Wang took the place of Mr. Li to give us a piano lesson today.
=Miss Wang took Mr,Li`s place to give us a piano lesson today.
instead of 代替（介词短语）
=Miss Wang gave us a piano lesson instead of Mr. Li.
to do He is sure to be the winner.①
2.be sure of +名词 He is sure of his success。 ②
that He is sure that he will win the match.③
注意：若主句和从句是同一个人，可以用to do 句型表示。若不是同一人则不能。 Eg:③ =He is sure to be the winner.
3.修理 mend 一般用于衣服、鞋袜等小东西，偶尔也用于道路、门窗等。
修补 repair 用于建筑、堤坝，机器，车辆等
eg. She is ________ a clothes for her son.
Who can _________ the bike for me,please
4.工作 job 可数名词 指职业 What`s your job
work 不可数名词 指临时性工作 a piece of work
eg. He has no ________,but he found a piece of ______ yesterday.
5.in与after 在…之后
in 用于将来时中，表示一段时间之后
eg.He`ll be here in two days. 对划线部分提问用how soon 多久
after 用于将来时中表示一个行为或具体时刻之后。
eg. Tom will be back after he finishes his work.
Tom will be back after two o`clock.（向划线部分提问用when）
请写下你预习时遇到的问题：
【课堂活动】
交流合作预习导航部分，解决疑难。
学习课文内容
默读1a，划出重点词语。做1B。 2)小组合作完成3 group work
学生提出疑难，师生解答。 4)听录音跟读1A和2 section。
3.成果展示（10分钟）
小组间赛读1A，或分角色朗读或表演1A. 2)表演3 group。
4.做课堂反馈习题（10分钟）
根据句意和首字母提示完成单词。
Edison was a great s_________,and he invented more than one thousand things.
I really want a r_________. It can do a lot of work instead of me.
If you are in a difficult s________, don`t worry .We will help you.
—My bike is broken. Could you help me m____________ it
When you are walking on the road, a car may a________ suddenly and hit you. You must be careful.
看谁是火眼金睛
（ ）1.—Could you ________ Miss Lee to have lessons for her students She is ill today. — Certainly.
A. instead B. instead of C.take the place of D.take place of
( )2.Listening to music can make people ______,so many people like it.
A. sad B. angry C. relax D.lazy
( )3.My mother will come back ______,so I m very sorry.
A. after two days B. two days ago C. last two days D. in two days
( )4.—Are you sure you will wait for us
— ________ There is little left.
A. Yes , I`m sure. B. No, I`m not sure.
C. Yes, quite sure. D. Both A and C.
( )5.If robots do a lot of work instead of humans.people will get _____.
A.healthier B.lazier C.richer D.busier
请写下学习本课的心得和感受：
作业卡
同学们，当好小小翻译官吧！
我们确信机器人能比人类做得更快更好。
We ____ _______ robots can do _____ and _____ than humans.
机器人能代替人类做一些艰难的工作。例如：它能挽救处于危险中的人。
Robots can do hard work instead of humans.For example,it can save people _____ __________.
如果你有一台电脑，你将用它做什么？
What ______ you use it to ______ ______ you have a computer
4.—对我们来说，使用机器人好不好？ ---我认为是好的。
—Is using robots _____ _______ _________ for us
—I think it`s good.
5.因为出现了机器人，很多人都失业了。
Many people ______ _____ ________ because robots appeared.
二．你能完成下列句子吗？
1.Robots can take the place of humans to do some dangerous work.(同意句转换)
Robots can do some dangerous work _______ ______ humans.
2.You are right.I`m sure.(合并成一句)
______ _______ you are right.
3.Beijing will become more beautiful in two years.(对划线部分提问)
______ ______ will Beijing become more beautiful
4.We can`t finish the work if he doesn`t help us.( 同意句转换)
We can`t finish the work ________ his help.
5.I`m sure robots can do hard and boring work.(变一般问句，肯定回答)
_______ _______ _____ robots can do hard and boring work
_______,_______ _______.
错题集：