仁爱9年级上 Unit4 Topic2 Section B教案

The main activities are 1a and 3a. 本课重点活动是1a和3a。

Ⅰ. Teaching aims and demands 教学目标

1. Learn some new words:

clone, experiment, direct

2. Go on learning the past simple passive voice:

(1) When was it invented?

(2) It was invented in 1879.

3. Learn some information about“clone”.

Ⅱ. Teaching aids 教具

录音机/多媒体课件或教学挂图

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:13分钟)

1. (做一个链式游戏，以小组为单位，就课本昨天学过的计算机，MP3，英语学习机，手

机，数码相机或学习用具等进行对话，用be made of / be made in / be made from / be used for的句型进行操练。以一小组的第一个同学回过头去问下一位同学，依次接着往下问。)

T: Boys and girls. Let’s play a game. Ask questions one by one.

S₁: How do you say it in English?(钢笔)

S₂: A pen.

S₁: What’s it made of?

S₂: It’s made of steel and plastic.

S₁: When was it made?

S₂: It was made in 2006.

S₁: What’s it used for?

S₂: It’s used for writing.

T:       Do you understand?

S_s: Yes.

T: OK. Let’s begin.

2. (出示教学挂图，导出新课。)

T: You did very well. There are many important technologies and inventions in the world today. Look at here. (展出灯泡图形。)It’s a light bulb. (学生跟读light bulb。) What do you know about it?

Ss: Yes, a little.

T: OK, Who invented it?

Ss: Thomas Edison.

T: When was the light bulb invented? Do you know?

Ss: No.

T: It was invented in 1879. And this picture (出示radio的图片。) Who invented the radio? Do you know?

Ss: We don’t know.

T: It was invented by Guglielmo Marconi.

(展示图片的发明者的名字和年份。)

T: And when was it invented?

Ss: It was invented in 1895.

T: Very good. And look at this picture.(展示一个飞机的图片。)Who invented it?(同时展出图后的发明者和年份。)

Ss: It was invented by Wilbur and Orville Wright.

T: And when was it invented?

Ss: It was invented in 1903.

3. T: We have talked about so many inventions, but have you ever heard of clone?

(教师释义并领读clone。)

Ss: Yes, of course.

T: That’s very good. So what’s the name of the first cloned sheep?

Ss: Dolly.

T: When and where was it created?

(教师释义并领读creat。)

Ss: It was created in Scotland a few years ago.

T: What is used in cloning?

Ss: DNA.

T: What other things has man cloned?

Ss: Rabbits, cows, mice, pigs and some other animals.

Step 2  Presentation 第二步  呈现(时间:10分钟)

1. (播放1a录音，让学生回答以下问题。然后核对答案。)

T: Listen to the tape, then answer the following questions.

(1)Who invented the light bulb?

(2)When was the light bulb invented?

(3)When was the radio invented?

(再播放一遍，学生跟读，让学生填好黑板上表格。完成1b。)

Invention	Inventor	Year
Light bulb
	Guglielmo Marconi
		1903

(由两个学生到黑板上把表格填好，教师核对答案。)

2. (指导学生阅读3a, 教师板书文中的关键词和短语，为学生复述短文做准备。)

T: We have learned a lot of inventions. Now we are going to learn something new about a great

invention — clone. Please read 3a carefully. And finish 3b. You should finish it in 5 minutes.

(板书)

the cloned sheep, Scotland, a great experiment, rabbits, sheep, cows, mice, pigs, and some other animals, DNA, living things, human beings, every part of your body, fingernails, hair, own

(学生阅读后，检查答案，mark (T) or (F)。完成3b。)

(1) The cloned sheep, Dolly, was cloned in Canada.   F 

(2) Scientists have cloned pigs.   T 

(3)Every part of our body has different DNA.   F 

(4)There is DNA in all living things.   F 

3. (让学生听3a并跟读，画出生词和重点词组，教师板书。)

T: Please listen to 3a. and read after it. Find out the new words and important phrases.

(板书)

clone, create, experiment, so far, the same as …, be similar to

(学生听完录音后，与教师板书的内容对照，并朗读课文3a，教师讲解本课重要词组。)

Step 3  Consolidation 第三步  巩固(时间:10分钟)

1. (引导学生看黑板上表格中的信息，讲述三项发明的情况，巩固1a。鼓励学生使用本课的目标语言：一般过去时的被动语态。)

T: Now, look at the chart on the blackboard and try to say something about the inventions we

learned just now.

S₁: The light bulb was invented by Thomas Edison in 1879.

S₂: The radio was invented by Guglielmo Marconi in 1895.

S₃: The airplane was invented by Wilbur and Orville Wright. It was invented in 1903.

T: Well done! Now suppose you are Jane and Michael. You’re visiting the Science Museum.

Talk about the three inventions as we learned just now. Then act it out. Get ready for it for

3 minutes, OK?

(让学生自编自演对话。)

2. (指导学生看黑板上另一板块，3a中的关键词，用这些关键词来复述3a，让学生用3分

钟时间做准备，然后用接龙的方式进行复述。教师利用黑板上的中心词进行提醒。)

T: Just now, we’re learned something about cloning, look at the words on the blackboard. Can

you say something about“clone”?

S₃: Dolly, a cloned sheep?

S₄: Yeah. It’s well-known.

S₅: Cloning is known as a great experiment all over the world.

S₆: Good!

S₇: She was created in Scotland a few years ago.

S₈: So far, man has cloned rabbits, sheep, cows, mice, pigs and some other animals.

T: Excellent! Now, repeat what you said just now one by one, and you get the whole paragraph.

(让刚才抢答问题的学生重复一遍自己所说的那句话，教师不再提示关键词，让学生按同样的方式继续进行接龙，为激发学生的兴趣，可分组竞赛，看哪组复述的句子又快，又多，又准确。)

(精心组织学生复述课文，同时反复提示本课目标语言：be created, be used。在黑板上记录每组的竞赛结果，对胜者进行掌声鼓励。)

Group 1 √√√√√  Group 2 √√√√√

T: We have got the idea of clone. Do you think it’s terrible to see “another you”?

Ss: …

Step 4  Practice 第四步  练习(时间:7分钟)

1. T: Boys and girls, do you want to know more inventions? Let’s listen to the tape carefully and

fill in 2 on page 87.

(播放2录音，然后检查部分学生答案，如发现有困难，可再播放一遍录音，提高学生们的听力水平，然后就听力内容提问。)

T: Who was the car invented by?

Ss: Karl Benz.

T: When was it invented?

Ss: In …

T: What about the telephone?

Ss: It was invented by Alexander Graham Bell in …

T: What did John Baird invent?

Ss: He invented the television …

T: When did he invent it?

Ss: He invented it in …

(让学生分成三组分别讨论这三项发明，并用自己的话复述2中的部分内容。)

T: Now, please talk about the inventions in your own words. Group 1, please tell us something

about the car.

G₁: The car …

T: Now, Group 2, would you like to talk about the telephone or the television?

G₂: We’d like to talk about …

T: Group 3. It’s your turn to talk about ...

2. (用多媒体展示一些图片，并要求学生用过去时的被动语态造句。巩固本课的语言点。完成4。)

T: Make up sentences according to the example and practice more.

For example:

(展示computer图片)

Computers were invented in America.

(展示神Ⅵ发射图。)

Ss: ShenzhouⅥ was sent up into space in China in 2005.

(展示张艺谋导演的大片。)

Ss: The film was directed by ZhangYimou in 2006.

(展示radio图片。)

Ss:It was invented in 1895.

….

Step 5  Project 第五步  综合探究活动(时间:5分钟)

1. (讨论康康的设计让学生自己设计一个发明)

T: Please design your own invention after discussion.

2. Homework:

Please write a short passage. You can choose a new technology or a great invention. Say something about a useful invention around you, or something you want to invent in the future. You’d better tell us what you think of it.

(家庭作业：写一篇短文，说说某一项新技术，大发明或说说你身边的某一项很实用的发明，甚至可以谈论你自己的发明设想。最好说出你的想法。)

板书设计：