八上仁爱版英Unit 4 Topic 2 I am sure there are no UFOs Section B教学案例
The main activities are 1 a and 2. 本重点活动是1a和2。
Ⅰ. Teaching aims and demands 教学目标
1. Learn some useful words and expressions:
toward(s), plate, planet, information, mistake … for …, object, balloon, call for, wake, wake up, real
2. Go on learning to express certainty and uncertainty (be sure/be not sure) and review Past Continuous Tense:
(1)A UFO flew over my head while I was walking toward the bus stop yesterday.
(2)I’m quite sure there are UFOs.
(3)I’m not so sure. Even scientists aren’t sure whether there are UFOs.
(4)I’m sure there are no UFOs.
(5)I’m not sure whether/if ro bots will make humans lose their jobs.
(6)While Jim was sleeping, he saw a UFO flying over his head.
Ⅱ. Teaching aids 教具
录音机/图片/小黑板
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:12分钟)
1. (猜谜游戏：复习过去进行时和肯定与不肯定句式的用法。)
(把学生分成三人一组，一人在纸上写一个动作，让另外两位同学猜他在做什么，猜时要用上I’m sure./I’m quite sure./I’m not sure.练习之后，以小组为单位在台前表演。)
(教师找两位学生帮忙，做出示范。S1写出动作。)
T: What was S1 doing at this time yesterday?
S2:She was watching TV.
T: Are you sure?
S2:Yes, I’m quite sure.[:学科网ZXX]
S1:Yes, I was watching TV at that time.
(小组练习完之后，找几组学生表演。)
2.(检查作业：汇报搜集到的有关机器人和不明飞行物的信息。师生对话，引出生词，导入新。)
T: I’m sure you were searching for the information about robots and UFOs last night. Please give a report about it.
3. (教师从报纸、杂志、网上找一些UFO的图片，导入新。)
T: (出示图片)You have known much about robots and UFOs. I have some pictures here. Look at these pictures. What are these?
Ss:They are UFOs.
(板书)
UFO
T:What do the UFOs look like?
Ss:They look like plates.
(板书)
plate
T: I’m not sure whether there are UFOs. Are you sure there are UFOs, S3?
(板书并帮助学生理解表达不确定的句式。)
I’m not sure whether/if there are UFOs.
S3:Yes, I’m quite sure.
T: What about you, S4?
S4:I’m not sure whether there are UFOs.
T: I’m not sure, either. Because there are no living things on other planets.
(板书)
planet
T: The earth is a planet. ars(火星) is a planet, too.
Step 2 Presentation 第二步 呈现(时间:8分钟)
1.(设置听力任务，播放1a录音。)
T:ost of us are not sure whether there are UFOs. But Jane saw a UFO yesterday. Is there really a UFO? They’re talking about it. Now listen to 1a and answer the following question:
What was Jane doing while a UFO flew over her head?
(听后找学生回答。)
S1:She was walking toward the bus stop.(帮助学生说toward。)
(板书并解释。)
toward(s)—to
2.(阅读1a，完成1b。)
T:Some students are sure there are UFOs, but some students aren’t sure about this.What about ichael, angkang and aria? Read 1a and finish 1b.
(2分钟后检查。)
S2:ichael is quite sure there are UFOs.
S3:angkang is not sure.
S4:aria is sure there are no UFOs.
Step 3 Consolidation 第三步 巩固(时间:8分钟)
1. (再次播放录音1a，让学生跟读，注意语音语调。)
T: Listen to the tape and follo Pay attention to the pronunciation and intonation.
2. (根据1b表格。四人一组练习1a对话。)
T: Please practice the dialog using the information in 1b. Then I’ll let some of you act it out.
(练习2分钟后，让几组学生在全班学生面前表演。)
3. (用给出的句子编 对话，完成1c。)
T: From 1a we know the scientists aren’t sure whether there are UFOs. But I’m sure there are robots. Are you sure, S1?
S1:I’m quite sure.
T:I’m s ure robots will make humans lose their jobs.
S2:I’m not sure whether robots will make humans lose their jobs.
T:Look at the example in 1c. Can you make similar dialogs by using the sentences in the box?
(2分钟后，挑几组学生表演。)
Step 4 Practice 第四步 练习(时间:12分钟)
1. (利用实物，引出生词及词组，引入2。)
T: (拿出气球) What’s this object?[
(板书)
object
S1: It’s a balloon. (帮助学生回答)
(板书)
balloon
T: Yes, it’s a balloon. Are there UFOs? Nobody is sure. In fact, people often mistake balloons for UFOs.
(板书)
sure, mistake … for …
T:But why are there so much information about UFOs? There is a passage about it. Let’s go and have a look together.
T:Now please read the passage in 2 and check the best title of the passage.
(理解man-made，核对答案。)
T:O, now are you sure there are UFOs? S2, please.
S2:No, I’m not sure there are UFOs.
T:Why do you think so?
S2:Because until now, nobody seems to have really seen a UFO.[:学*科*网Z*X*X*]
…
2. (听录音跟读，记下关键词。)
T: Well done. Now listen to the tape and follo Write down the key words.
(板书)
say, see UFOs, in fact, information, mistake ... for … , man-made, objects, kite, balloon, nobody, sure
(2分钟后挑选学生复述。)
3. (师生对话，引出生词，导入3a。)
T: From the passage above, we know nobody seems to have really seen a UFO. But are you
sure there are aliens?
(板书)
alien
S3:Yes, I’m sure there are aliens.
S4:No, I’m not sure whether there are aliens.
T: O ! Last night, while Jim was sleeping, he saw a UFO flying over his head. To our surprise, when he was trying to call for help, he saw an alien. What happened to him? Please read 3a and fill in the blanks.
(板书)
call for
wake up
(核对答案。)
3. (让学生再读3a，小组进行讨论，然后完成3b。)
T: Who was the real “alien”? R ead 3a again. Discuss in pairs, and finish 3b.
(板书)
real
(核对答案。)
Step 5 Project 第五步 综合探究活动(时间:5分钟)
1. (复习过去进行时。)
(让学生与他们的同桌讨论“昨天晚上在不同的时间段他们在干什么？”写下同桌的活动，然后谈论他们自己的活动。)
T:Now, let’s make a survey. One student asks his/her partner what he /she was doing at different times yesterday evening, then fill his/her answers in the table on the small blackboard. And then write down your own answers.
Dis cuss with each other and choose who had the best time. At last I will ask some students to report to the class.
Time (yesterday evening)Your partnerYou
7:00
8:00
9:00
2. ake a survey.
(把学生分为10人一组，讨论以下问题，然后填表格。每组派代表向全班同学汇报， 班长有多少人认为……，相信或不相信……。)
(1)Do you thin k there are people on other planets?
(2)Are you sure UFOs are real?
(3)If there are aliens, are they probably friendly or unfriendly?
(出示小黑板。)
StatementsNamesJim
There are people on other planets.√
There are no people on other planets.
UFOs are real.√
UFOs are not real.
Aliens are probably friendly.
Alien s are probably unfriendly.√
3. Homework:
上网查询或查阅书报、杂志上有关外星人及不明飞行物的相关内容。充分发挥你的想象，编一个谈论外星人和不明飞行物的对话或写一篇短。（用上过去进行时句型和be sure结构。）
板书设计：
I am sure there are no UFOs.
Section B
mistake for(1)I’m quite sure there are UFOs.
call for(2)I’m not so sure. Even scientists aren’t sure whether there are UFOs.
wake up(3)I’m not sure whether/if robots will make humans lose their jobs.
(4)While Jim was sleeping, he saw a UFO flying over his head.
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