1、1Unit 4 Topic 1 Section C RainforestsI. 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 fillw
2、ith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： Rainforests are important to us. 热带雨林对我们很重要。 Rainforests are becoming smaller and smaller. 热带雨林变得越来越小了。The plants in the forests help to make the air fresher. 雨林里的植物使得空气更新新。 Water makes up the largest part of the human body.人体的大部分都是由水构成的。 They c
3、ant live at all without water.没有水，它们根本都不能生存。 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。. Hot Links 知识链接1. cover v. 覆盖 (1) coverwith 用覆盖树木
4、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2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 th
5、e 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
6、. 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
7、水 big drops of raindrop v. 掉下，落下，放弃 如：我的玻璃杯掉到了路上。My glass _ on the floor. . Having a Quit 当堂检测 .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. Dont swim in this l_. Its dangerous.2. We should p_ the wild animals.3. In f_, he cant speak English at all.4. Please save every d_ of water on earth.5. Its d_ here. Pleas
8、e turn on the light.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.3A. fills; in B. fills; of C. filled; with D. filled;
9、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. 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
10、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
11、 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 frui
12、t. 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
13、 live on earth.( ) 1.We need many plants around us because _.A. plants can grow easily B. plants are greenC. 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 doesnt need any plants B. most animals dont eat plantsC. man and an
14、imals 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.Wh
15、ich is the best title(题目) of this passage?A. Plants around us B. Man and Animals C. Live on Earth D. Food and Plants5.完形填空4We 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 clim
16、ate. 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 g
17、row 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
18、 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 pastD. look at( ) 4. A. every B. many C. the firstD. 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. smallD. thin( ) 8. A. climate B. trees C. ringsD. animals( ) 9. A. people B. things C. climate D. life( ) 10. A. how B. why C. when D. while
