Unit 4 Topic 1 Section C

Unit 4 Topic 1 Section C Rainforests

I. Learning Aims 学习目标

1. 同学们复习形容词比较级和最高级的用法，熟练掌握它们的用法。

2. 同学们谈论地球上水资源和热带雨林的基本情况以及它们对于地球上生物的重要性，增强保护水资源和森林资源的意识。 II. The Important Points 重点

1. 请同学们熟读生词表中P81-82的词汇。并标出读不准的词。 2. 重点掌握下列词的用法： cover v. 覆盖；掩盖 control v. 控制protect v. 保护fill v. 装满；填空thousands of 成千上万 fill…with…用…填满… on earth在地球上；到底，究竟make up组成，构成

3. 同学们需掌握下列句型： ⑴ Rainforests are important to us. 热带雨林对我们很重要。 ⑵ Rainforests are becoming smaller and smaller. 热带雨林变得越来越小了。 ⑶The plants in the forests help to make the air fresher. 雨林里的植物使得空气更新新。

⑷ Water makes up the largest part of the human body.人体的大部分都是由水构成的。

⑸ They can’t live at all without water.没有水，它们根本都不能生存。 ⑹ We must save every drop of water. 我们必须保护每一滴水。 III. The Difficult Points 难点

without的用法 IV. Preview自主预习

1.请同学们阅读课文，在书上完成1b。

2.请同学们思考并写出the importance of rainforests:

_____________________________________________________________________________

__________________________________________________________________________________________________________________________________________________________

3. 请同学们阅读2a,在书上完成2b。 4.将第三部分排出顺序, 组成一篇短文。 Ⅴ. Hot Links知识链接 1. cover v. 覆盖

(1) cover…with… 用…覆盖… 树木覆盖着这个岛的大部分。

Trees ______ most parts of the island. 他们给她盖上了毛毯。

They _____her ____ a blanket.

(2) cover n. 封面，封皮，封底；from cover to cover 从头到尾 2. thousands and thousands of 成千上万 =thousands of

当hundred, thousand, million, billion等表示不确定数目时，常用复数形式，后面跟介词of，意为“数以百计的，成千上万的，数百万计，几十亿”。 如：天上有数百万颗星星。

There are __________ __________ stars in the sky.

当这些词与具体数词连用时不用复数形式。 如：我们年级有六百个学生。

There are __________ ___________ students in our grade.

3.smaller and smaller 越来越小 “形容词比较级 + and +形容词比较级”结构表示“越来越…

如：她对英语越来越感兴趣了。

She is becoming _______ _______ _______ interested in English.

【知识回顾】“the + 形容词比较级， the + 形容词比较级”表示“_________________”。

如： 越仔细，你就越少出差错。

_______ _______ _________ you are, ________ ________ mistakes you will make.

4. protect v. 保护 protect sth. / sb. from sth. 保护某物 / 某人免于…… 如：这把伞可以保护她的脸免受太阳光照射。

This umbrella can __________ her face __________ the sun. 5. in fact 事实上 make up 构成

in fact = as a matter of fact 实际上，事实上 make up 形成，构成，占据

如：女学生占全部学生的百分之六十。

Girl students _________ _________ 60﹪ of all the students. 6. drop 滴

drop n. 滴 一滴水 a drop of water 泪珠 a tear drop 大滴的雨水 big drops of rain

drop v. 掉下，落下，放弃

如：我的玻璃杯掉到了路上。

My glass ______ on the floor.

Ⅵ. Having a Quit当堂检测 Ⅰ.根据汉意或句意和首字母提示补全单词或用所给词的适当形式填空. 1. Don’t swim in this l_________. It's dangerous. 2. We should p__________ the wild animals. 3. In f__________, he can’t speak English at all. 4. Please save every d_________ of water on earth. 5. It’s d___________ here. Please turn on the light. Ⅱ.单项选择。

( ) 1. Five ________ people are waiting for the train.

A. hundred of B. hundreds C. hundred D.

hundreds of

( ) 2. Eighty students __________ our class.

A. make-up B. make up C. make of D.

make from

( ) 3. He ________ his schoolbag __________ a lot of books.

A. fills; in B. fills; of C. filled; with D.

filled; of

( ) 4. The number of wild animals is becoming _________.

A. much more small B. much more smaller C. smaller and smaller D. small and small

( ) 5. The TV is ________ for people to watch clearly.

A. small enough B. enough small C. large enough D.

enough large Ⅶ. Homework课外作业

1.认真读、背今天的“学习重点” 和“知识链接”，并默写。 2.背诵Section C的单词短语。

3.按照Section D中自主预习中的要求预习 Section D。 4. 阅读理解。

Plants are very important. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals can get their food by eating plants and other animals. Man gets his food by eating plants and animals, too. So animals and man need plants in order to live. This is why there are so many plants around us.

There are two kinds of plants: flowering plants and non-flowering plants. Almost all the trees around us are flowering plants. You can know some trees from their flowers and fruit. Non-flowering plants do not grow flowers. You can not see many non-flowering plants around you.

If you look carefully at the plants around you, you will find that there are many kinds of plants. Some plants are large and some are small. Most of them are green. Thanks to the plants around us we can live on earth.

( ) 1.We need many plants around us because _______.

A. plants can grow easily B. plants are green C. we can get what we need from plants D. we like all kinds of plants ( ) 2.There are so many plants around us because _______.

A. man doesn’t need any plants B. most animals don’t eat plants

C. man and animals need plants to live D. the earth will become more beautiful

( ) 3.There are _______ non-flowering plants than flowering plants around us.

A. much fewer B. much more C. much larger D. much better

( ) 4.Which of the following does NOT come from a plant?

A. Basket B. Bread C. Cabbage D. Stone forest

( )5.Which is the best title(题目) of this passage?

A. Plants around us B. Man and Animals C. Live on Earth D. Food and Plants 5.完形填空

We know that trees are useful in our everyday life. They 1 us many things, such as wood, oxygen, rubber, medicines and many other things. They can 2 tell us a lot about our climate. The following are the reasons. If you 3 a tree, you can see that it has many rings. Most trees grow one new ring 4 year. Because of the reason, we know 5 a tree is. A tree over a hundred years old means that it has more than a hundred 6 . When the climate is dry or very cold, the trees do not grow very much and their rings are usually 7 . When it is wet and warm, the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the 8 changed suddenly. If we look at the rings on this tree, we can learn about the 9 for a hundred years. We can see 10 our climate is changing today. ( ) 1. A. tell B. ask C. give D. get ( ) 2. A. not B. too C. to D. also ( ) 3. A. cut across B. climb up C. walk past D. look at

( ) 4. A. every B. many C. the first D. from

( ) 5. A. how big B. how long C. how old D. how much

( ) 6. A. trees B. leaves C. people D. rings

( ) 7. A. big B. thick C. small D. thin ( ) 8. A. climate B. trees C. rings D. animals

( ) 9. A. people B. things C. climate D. life ( ) 10. A. how B. why C. when D. while

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