八年級上冊Unit 4 Our World Topic 1 Section C備課教案

The main activities are1aand2a. 本課重點活動是1a和2a。

Ⅰ. Teaching aims and demands 教學目標

n some new words and phrases:

cover, earth, surface, thousands of, dark, forest, control, wood, rubber, protect, main, fact, in fact, make up, lake, sea, ocean, drop, on earth, hole, fill, fill … with …, dig, deep

n some useful sentences:

(1)Water is necessary for all plants.

(2)They can’t live at all without water.

on learning the 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.

ribe natural resources and realize the importance of environment protection:

(1)They also help to control the climate.

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

(3)It is important to all living things. We must save every drop of water.

Ⅱ. Teaching aids 教具

錄音機/多媒體/小黑板/植樹過程的圖片

Ⅲ. Five-finger Teaching Plan 五指教學方案

Step 1Review 第一步複習(時間:10分鐘)

通過討論對動植物的看法，複習形容詞比較級和最高級形式，導入本課新詞。

1. (師生互動示範，然後讓學生表演對話，複習描述動物和植物。)

T: Hello, S1, do you like plants or animals?

S1:I like animals better.

T: Why?

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

T: Well done! S2, do you like plants or animals?

S2:I like plants better.

T: Why?

S2:Because plants are very important to us. They are useful.

T: Now, class, please practice the dialog like this, OK?

(學生兩人一組練習對話。然後找幾組學生表演。）

2. (頭腦風暴，引出新知識。)

T: Now, please say some animals and plants as many as you can.

Ss: …

T:Where can you see animals and plants?

S3: On the farm.

S4: In the zoo.

S5: In the forest.(教師幫助學生用英語說出forest。)

T: Very good. In a forest, there are many animals and plants. Today we’re going to learn a special forest. It often rains and it is very wet. It is a rainforest.

(板書並要求學生掌握forest；瞭解rainforest。)

forest, rainforest

(教師通過多媒體展示熱帶雨林的圖片，引出並學習生詞及比較級+and+比較級的用法。)

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

(教師邊說邊用多媒體呈現短語及生詞，並要求學生掌握；理解climate，同時幫助學生理解並掌握smaller and smaller的用法。)

cover, earth, surface, thousands of, dark, control, climate, wood, rubber, smaller and smaller, protect

(學生熟讀單詞後，再看圖片並回答教師提出的問題。)

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?

Ss: Thousands and thousands of animals live there.

T:What can we get from the rainforests?

Ss: We can get wood, fruit, medicine, rubber and so on.

T:Are they important to us?

Ss: Yes, they are.

T: What should we do then?

Ss: We should protect them well.

T: Good! I hope rainforests will become larger and larger. Do you want to know more about rainforests?

Ss:Yes.

T:Let’s learn Section C together.

Step 2Presentation 第二步呈現(時間:8分鐘)

聽錄音並閱讀短文內容，培養學生的聽力和閱讀能力。

1. (聽1a錄音，瞭解課文內容並回答問題。)

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

(出示小黑板。)

(1)What cover 6% of the earth’s surface?

(2)Are there thousands of different plants and lots of trees in rainforests?

(3)Can rainforests help to control the climate?

(覈對答案。)

2. (教師播放1a錄音，學生跟讀兩遍，注意語音語調，並畫出關鍵詞。)

T:Read after the tape twice. Pay attention to the pronunciation and intonation, and underline the key words.

(板書)

Paragraph 1: cover 6%—animals—live in—thousands of—dark—wet

Paragraph 2: important—lungs—help to make—control—wood, rubber …—smaller—protect

Step 3Consolidation 第三步鞏固(時間:8分鐘)

通過對短文的理解，完成1b、1c，並根據關鍵詞對其進行復述。培養學生綜合運用語言的能力。

1. (閱讀1a，完成1b。)

(教師讓學生猜測句子中main的意思，板書並要求學生掌握。)

main

T: Now please read1aand finish 1b.

(覈對答案。)

2. (再讀1a，完成1c。)

T: Read1aagain and write down the importance of rainforests.

(覈對答案。)

T: Class, can you give us your answer?

S1: Make the air fresher.

S2: Control the climate.

S3: Give us wood, rubber, fruit, medicine and so on.

3. (根據黑板上的關鍵詞，用接龍的形式複述短文。)

Example:

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

S4: Rainforests cover 6% of the earth’s surface.

S5: Thousands and thousands of animals live in rainforests.

S6: …

Step 4Practice 第四步練習(時間:14分鐘)

通過對四幅圖片的描述，讓學生認識到水是一種重要的資源，所有生物都離不開水。培養學生節約用水的意識。

1. (師生對話，引出生詞導入2a。)

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

(板書並要求學生掌握。)

fact, in fact, make up

T: Water covers most parts of the earth. It’s in rivers, lakes, seas and oceans.

(板書並要求學生掌握。)

lake, sea, 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.

(板書並要求學生掌握。)

drop

2. (學生讀2a，獨立完成2b。教學on earth並要求學生掌握。)

T: There is more information in2a. Read it and finish 2b.

(覈對答案。)

3. (學生跟讀2a短文，注意語音和語調並畫出關鍵詞。)

T: Listen to2aand follow. Pay attention to the pronunciation and intonation. Underline the key words.

(板書)

plants (need, is necessary for)

animals (plenty of, live, without)

humans (drink, cook, clean, makes up)

water (covers, lakes, rivers, seas, oceans, living things, save, drop)

4. (讓學生根據關鍵詞複述短文。)

T: Retell thetext using the key words on the blackboard.

(兩分鐘後選出幾名學生到前面複述。)

5. (通過完成3，使學生知道怎樣植樹，培養學生的環保意識。)

(1)T: We know water is important to all living things. Trees are important to us, too. So we should plant more trees to improve our environment. Then how to plant trees? Now look at the pictures and match them with the sentences in 3.

(教師用幻燈片出示事先準備好的植樹過程的圖片和3中的內容，讓學生把圖片與句子搭配。同時讓學生猜測句中hole, fill, fill … with …, dig, deep, everything的意思。)

(板書並要求學生掌握。)

hole, fill, fill … with …, dig, deep, everything

(2)(讓學生獨立完成3。)

(覈對答案。)

Step 5Project 第五步綜合探究活動(時間:5分鐘)

通過討論水的重要性，使學生增強保護有限水資源的意識。

1. (討論有關水的問題。)

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

(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?

(把學生分成四人一組，討論這些問題，然後每組派一人彙報討論結果。)

2. Homework:

根據討論結果，以Water is Our Life爲題寫一篇短文。

板書設計:

Plants and animals are important to us.

Section C

thousands of But, now, rainforests are becoming smaller and smaller …

smaller and smaller Water is necessary for all plants.

in fact They can’t live at all without water.

make up Fill the hole with earth.

be necessary for

be very important to