仁爱8年级上 Unit4  Topic 1 Section C 教案

The main activities are 1a and 2a. 本课重点活动是1a和2a。

Ⅰ. Teaching aims and demands 教学目标

1.(1) Learn some words about rainforests:

cover, surface, meter, dark, forest, control, wood, rubber, protect

          (2) Learn some other words and expressions:

              fact, in fact, make up, large, lake, sea, ocean, drop, in danger

  (3) Learn some useful expressions:

thousands and thousands of   be very important to

be necessary for…             can’t live without…

save every drop of water

2.Review comparative and superlative degrees of adjectives:

(1)The plants in the forests help to make the air fresher.

(2)But now rainforests are becoming smaller and smaller.

(3)Water makes up the largest part of the human body.

3.Describe nature resource and realize the importance of environment protection:

(1)They also help to control the weather.

(2)The rainforests give us wood, rubber, fruit, medicine and so on.

(3)It is important to all living things.

Ⅱ. Teaching aids 教具

录音机/多媒体/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. (学生表演对话，复习描述动物和植物的语言。)

T: Hello, S₁! Do you like plants or animals?

S₁:I like animals better.

T: Why do you think so?

S₁: Because animals are our friends. They give us joy.

(让两个学生一组根据示范来练习对话。)

(然后，挑几组学生表演。)

T: Very good. Now let’s practise another dialog.(对S₂)

T: Which kind of animals do you like best, birds, cats or dogs?

S₂:I like birds best.

T: Why do you think so?

S₂:Because they are the most beautiful of the animals and they can sing to us.

(教师示范后，让学生进行对话练习，然后，让几组学生表演。)

2. (看热带雨林的图片，学习生词。画线的单词为生词。)

  (教师通过多媒体出示热带雨林的图片，教师和学生一起观看图片，同时教师讲解图片上的信息。)

T: It’s a picture of forests, rainforests. They cover 6% of the earth’s surface. Thousands and thousands of animals live in it. It’s always dark, hot and wet in the rainforests. They can help to control the weather. They give us wood, rubber, fruit, medicine and so on. They are very important to us, but they are becoming smaller than before, so we must protect them well.

(第二遍教师边说边板书。)

forest   rainforest  cover   surface    thousands and thousands of dark   control   wood   rubber  protect

(学生熟读单词后，再看图片并回答教师提出的问题。)

T:  What are they?

Ss:     They are rainforests.

T:  How large are the rainforests?

Ss:     They cover 6% of the earth’s surface.

T:  What’s in the rainforests?

S_s:      Thousands and thousands of animals live there.

T:  What can we get from the rainforests?

S: We can get wood, fruit, medicine and rubber.

T:  Are they important to us?

S: Yes, they are.

T: What should we do about them?

S: We should protect them well.

T: Do you want to know more about rainforests?

Ss:Yes.

T:  Let’s turn to page 81.

Step 2  Presentation 第二步  呈现(时间:8分钟)

1. (阅读课文，理解课文内容并回答问题。)

T: Most students want to know more about the rainforests. Please read the passage and answer the following questions.

(出示小黑板。)

(1)   What covers 6% of the earth’s surface? (2)   Where do thousands and thousands of animals live? (3)   Are there also thousands of different plants and lots of trees in the rainforests? (4)   Are the rainforests very important to us? (5)   Can rainforests help to control the weather? (6)   What can rainforests give us? (7)   Why must we protect the rainforests?

(核对答案。)

2. (再读1a,完成1b。)

  T: Now please read the passage again and finish 1b.

(核对答案。)

3. (完成1c。)

T: Read the passage again and write down the importance of rainforests.

  (核对答案。)

  T: Ss, can you give us your answer?

  Ss: make the air fresher

     control the weather

     give us wood, rubber, fruit, medicine and so on

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

1. (教师放1a录音,学生跟读两遍，核对语音语调，并画出关键词句。)

  (板书)

paragraph 1: cover 6%—animals—live in—thousands of—dark—wet paragraph 2: important—lungs—help to make—control—wood, rubber …—smaller—protect

  (根据黑板上的关键词，用接龙的形式复述短文。)

For example:

T: Now please retell the passage one by one according to the key words.

S₁: Rainforests cover 6% of the earth’s surface.

S₂: Thousands and thousands of animals live in rainforests.

S₃: …

2. (将短文内容编成对话来巩固。)

  T: OK. Now please make up a dialog according to the passage. Then I will ask some groups to act it out.

For example:

  S₁: Hi! S₂. Do you know the rainforest well?

  S₂: Yes, what’s the matter?

  S₁: I want to know more information about it, Could you help me?

  S₂: No problem. I know rainforests cover 6% of the earth’s surface.

  S₁: Really? Do thousands and thousands of animals live in them?

  S₂: Yes, many of them live in the trees over 30 meters from the ground.

  S₁: Could you tell me the importance of the rainforests?

  S₂: Yes, they are the lungs of the earth. The plants in the forests help to make the air fresher. They also help to control the weather.

  S₁: What can they give us?

  S₂: They can give us wood, rubber, fruit and medicine.

  S₁: Are the rainforests becoming bigger and bigger?

  S₂: No, they are becoming much smaller than before.

  S₁: What should we do now?

  S₂: I think we should protect them well.

  S₁: I agree.

Step 4  Practice 第四步  练习(时间:10分钟)

1. (师生对话，引出生词。)

T: Rainforests are very important to us. What do you think of the water?

Ss:It’s very important to us, too.

T: What do humans need water to do?

Ss: We need water to drink, to cook and to clean.

T:   Yes. In fact, water makes up the largest part of the human body.

(板书)

in fact     make up

T:   Water makes up the largest part of the human body. Where else is the water in?

Ss: It’s in rivers.

T:   Right. It’s in rivers, seas, lakes and oceans.

(板书)

sea  lake  ocean

T: All plants and animals need water, that is to say, water is important to all living things, so we must save every drop of water.

(板书)

living things  drop

2. (学生读2a，独立完成2b。)

  (核对答案。)

3. (学生听读2a短文，核对语音和语调并画出关键词。)

  (板书)

plants (need, be necessary for) animals (plenty of, live, without) humans (drink, cook, clean, make up) water (cover, lakes, rivers, seas, oceans, living things, save, drop)

4. (让学生根据关键词复述短文。)

  (2分钟后挑几名学生到前边复述。)

5. (听3录音，独立完成3。)

  (第一遍只听不写，从整体上了解短文内容。)

  (第二遍边听边写出空缺处的内容。)

  (第三遍听录音核对答案。)

Step 5  Project 第五步  综合探究活动(时间:5分钟)

1. (讨论有关水的问题。)

T: Just now, we talked about the importance of water, next, please discuss the following questions about water in groups. Then each group gives their opinions in the front of the classroom.

(出示小黑板。)

(1)   Are there rivers and lakes in your hometown? (2)   Is the water there dirty or clean? Why? (3)   What should we do to keep the water clean? (4)   What should we do to save every drop of water?

(把学生分成四人一组，讨论这些问题，然后每组派一人汇报讨论结果。)

2. Homework:

  (根据讨论结果，以“Water is our life”为题写一篇短文。)

板书设计:

 

 

Plants and animals are important to us. Section C thousands of         They also help to control the weather. in fact                  They give us wood, rubber, fruit, medicine and so on. make up               Water is important to all living things. in danger                     be necessary for          be very important to     can’t live without…