本课主要谈论的话题是 “water”,进而涉及到了水的一些特点。我们知道：首先，地球上有很多水。There is a lot of water on the earth.其次，海水是咸的；the water in the sea is salty. 第三，水里生活着很多鱼类和植物；Many kinds of fish and plants live in the water. 最后，海水是非常凉的，越深处越凉。The deeper, the colder. 我们对于水的了解还会更多。比如：海水最深的地方在哪？它有多深等等。这一课就将教大家学习一些和水相关的词句，并教大家如何用英语谈论‘water’.
教学目标及重点难点分析：
1. 理解会说会写会用本课的一些重点单词和重点句型
A map of the world, the earth, mountains, land, living things, on the top, salty.
What do you know about …?
the deeper, the colder
2. 通过学习本课的内容了解到水的特点，并能用英语总结出水的特点。
3. 通过本课的学习，让学生了解到水的珍贵，培养他们珍惜水资源的好习惯。
课前准备：
教师准备录音机，磁带，制作幻灯片来讲解水的特点，准备一张世界地图和地球仪。
教学过程：
1.热身（Warming up）
1. 教师和学生一起唱上节课学过的歌曲 do re mi, 活跃课堂气氛。
2. 教师引导学生对上节课所学的知识进行复习，介绍自己和自己最好的朋友。
Hi! My name is … Horses are my favorite animal and I also like flowers. I like swimming and playing football . So I want to be a footballer in the future. This is my friend … She likes singing and dancing. She can see beautiful songs. So she wants to be an actor in the future.
2.新课展示（New Presentation）
1. 教师就本课重点内容进行讲解。
教师：（take out a map of the earth, 拿出一张世界地图）
T: What’s this?
S:This is a map of the world. （出示图片，世界地图）
So when we want to express a map, we should use ‘of’. 所以当我们想要谈论地图的所属时，我们要用到介词 ‘of’
Such as, 中国地图----- a map of China.
世界地图----- a map of the world
美国地图 ----- a map of America
教师拿着地图向学生讲解上面不同色块所指代的地域
T：Look at the green part, What is it?看看那蓝色的部分，那是什么？
It’s the land. 那是陆地. (出示图片，land 陆地)
T: What about the blue part? 那蓝色的部分呢？
It’s the water.
We can see a lot of water on the earth，such as lakes, rivers, seas. 我们在地球上可以看到很多水，它们有的是湖泊，有的是河流，还有的是大海。
All of us know that the 70 percent of the world is water. 我们大家都知道地球上70%的部分都是水。
所以我们也可以把我们的地球称作一个大水球。(a ball filled with water)
教师用幻灯片来展示地球的全景，简直是一个蓝色的大水球。
T： But it is a pity that most of the water on the earth is sea water.
It's salty. We can’t take full use of it. 但是让人遗憾的是地球上大部分水都是海水。它们都是咸的，我们不能充分利用。
Except this , the sea water is still very cold. The deeper, the colder. 除了咸，海水还有一个特点就是冷。 越深越冷。
教师出示海水的各个角度图片，总结其特点。
Cold and salty. 引导学生来学习这两个单词。
T：In the deep part of the sea, many kinds of living things live in the water. 在大海深处，生活着很多生物。
Such as, fishes, whales, dolphins and water grass. 例如鱼， 鲸鱼，海豚和海草之类的。
A：So the sea is a mysterious world. It has many secrets. We can seek for more. 大海是一个神秘的世界。 它隐藏了很多秘密。我们可以进一步探索。
教师用幻灯片展示海底的美丽风光，并且引导学生来学习海底一些生物的名称。
Fishes 鱼类
Whales 鲸
Dolphins 海豚
Water grass 水草
3.小结：
本节课我们了解了地球上最珍贵的资源----- 水资源的特点： 水资源的广泛分布；海水的味道；海水的深度和其温度的关系；海水中生长的各类生物， 不但让学生增长了见识，还教育了他们要学会珍惜水资源。
4.巩固练习
教师给学生3分钟时间再读课文，然后凭借自己的理解来回答教师写在黑板上的问句， 最后通过组织问句的答案来复述短文内容.
What can you see in the earth ?
Is the sea water tasteless?
Is the water cold?
What things live in the sea water?
Is the water cold?
学生两个人一组讨论问题答案，并且组织答案复述文章。
Look at the map of the world. The blue part in the map is water. We have much water in the world. But most of them is sea water. The sea water is very salty and cold. The deeper ,the colder. There are lots of things living in the sea. We can in fishes, whales, dolphins and water grass.
5. Listen to the tape and answer the questions.
A: What can you see in the earth ?
B: I can see land and water on the earth. But water is the biggest part.
A: Is the sea water tasteless?
B: No, it’s salty.
A: What things live in the sea water?
B: There are lots of living thing.
A: Is the water cold?
B: Yes. The deeper, the colder.
6. Do the exercise.
Let’s practise (Ⅰ)
A: This is a reading comprehension. Through reading it ,we can know more about the sea. 这是一道阅读题，通过阅读，我们可以对大海了解得更多。For example,
A: Where does the salt in the sea from?
B: The rivers carry the salt from the land into the sea.
A: What live in the water?
B: Many fishes and plants. The fish live on the plant.
A: What is the temprature of the sea water?
B: On the top, it is warm, but it becomes cold at the bottom.
Let’s practise (2)
A: This is a reading exercise, after reading it, we should jugde the statement true or false. 这也是一道阅读题，阅读完以后，我们要判断下面的句子是对是错。
The deepest part of the water is near the USA. No
The highest mountain in the world is 11 km high. No
If you put the highest mountain in the deepest place of water, there would be 2 km of water above. Yes
People can go down into the deepest water of the sea. Yes
Scientist can go to the deepest place of the water by underwater ship. Yes