2015-2016学年牛津沪教版初中英语七年级下Unit - 4 - - Save - the - trees - - 教案含练习

2015-2016学年牛津沪教版初中英语七年级下

Unit 4 Save the trees

一、核心词汇

1. save v.拯救 2. pine n.松树 3. discuss v.讨论 4. branch n.树枝 5. root n.根

6. fight v.与……作斗争 7. against v.反对 8. example n.例子 9. harmful adj.有害的 10. gas n.气体 11. produce v.产生

12. oxygen n.氧气 13. major adj.主要的 14. convenient adj.方便的 15. furniture n.家具 16. imagine v.想象 17. disease n.疾病 18. dig v.挖 19. hole n.洞 20. carry v.搬 21. container n.容器

二、重点短语

1. fight against对抗，与...作斗争 2. help sb. do sth. 帮助某人做某事 3. know about知道，了解

4. in many ways在很多方面，多角度 5. take in 吸收，理解

6. come from 来自（be from）

7. for example 例如 8. in fact 事实上，确切地说 9. look around 环顾四周 10. (be) made of 由……制成 11. millions of 大量的 12. (be) good for 对……有好处

三、基础知识点

1.If I plant this seed in the ground,will it become a pear tree, Hi?

(1)if 引导条件状语从句时，意为“如果”。主句（包括祈使句和含有情态动词can，may，must等的句子）用一般现在时，从句也用一般现在时；主句用过去时，从句也用过去的某种时态；如果主句是一般将来时，从句要用一般现在时表示将来。 Eg: We will go out if it is fine tomorrow. You must see a doctor if you are ill. (2)a不定冠词，意为“一（个……）”，用在以辅音音素开头的单数可数名词前；在以元音音素开头的单数可数名词的前面要用不定冠词an。不定冠词a/an常放在单数可数名词前，表示一个不确定的事物或人。其用法如下：

第一次提到某人或某物时，用不定冠词。Eg: You'd better go to see a doctor. 表示某一类中的任何一个，是泛指。Eg: A dog is a useful animal.

表示“一”的数量，但数的概念没有one强烈。Eg：I have a pen, a pencil and two books. 用在表示时间、重量、速度、价格等名词前，意为“每一”。 Eg: We have six English classes a week. 2.Look around this room.

与look相关的短语：look for寻找；look over仔细检查，翻阅；look after照顾；look up抬头看 3. A lot of furniture is made of wood.很多家具都是由木头制成的。

(be) made of(看得出原材料)=(be) made from(看不出原材料)意为“由...制成”。

如：The chair is made of wood. 这把椅子是由木头制成的。Paper is usually made from wood. 纸通常由木头制成。

4.But we cut down millions of trees every year.但每年我们都会砍伐数百万的树木。

millions of意为“数以百万计；大量的”。

如：Millions of people around the world learn English.全世界无数人在学习英语。→ 【拓展】：hundreds of 数以百计的，成千上万的；thousands of数以千记的，成千上万的； tens of thousands of 数以万计的；hundreds of thousands of数以十万记的

注意：hundred，thousand，million，billion等前面有具体的数词时，其后不加-s，也不带介词of。

Eg: two hundred 200

5.She can skate at a very high speed because sh practises a lot.

Practise及物动词，意为“训练，练习”。宾语可以是名词、代词或动名词。 Eg: You must practise speaking English every day.

6.As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing. The number of意为“……的数量”。Eg:The number of the students in our class is 50. 【拓展】

The number of……后接复数名词，但谓语常跟large，small等词The number of the students 的数量 动词要用单数形式 作表语 in our school is 2000. A number of大量；接复数名词作主语时，Number前可加small，A number of students are 许多，相当于many 谓语动词用复数形式 large，huge等表示程度 playing football. 7....but the speaker did not stop speaking until twenty past twelve.

Not... Until...意为“直到……才……”。主句的动词一般是非延续性动词，它所表示的动作直到until所表示的时间才发生。Eg：You cannot leave until your work is finished.

四、 语法：现在进行时 （ be doing ）

1、现在进行时的语法功能 1)表示说话时正在进行或发生的动作。这类情况常与now现在（at the present现在（at the moment现在等时间状 语连用。

Please don't make so much noise. I'm writing a composition. 不要吵闹。我正在写作文。 Look! They are reading over there under the tree. 看，他们在那边的树底下看书。 Listen! She is singing in the room. 听，她在房间里唱歌。 2)表示现阶段正在进行而说话时不一定在进行的动作。

We are working in a factory these days. 这几天我们在一家工厂工作。

这类情况常与today今天，this week这个星期，this evening今天晚上，these days目前等时间状语连用。

3)在口语中表示主语计划将要作的动作

They are leaving for New York tomorrow. 明天他们将要动身前往纽约。

这类情况常与come来，go去， leave离开，depart离开，arrive到达，stay逗留，start开始等动词连用。所用

的动词必须是动作而不是状态，主语必须是人。 4)现在进行时与always等副词连用时带有感情色彩。 He's always quarreling with others. 他老喜欢跟别人吵架。

与always总是，usually通常，continually不断的，constantly经常的，forever永远、老是等副词连用。

5)有的现在进行时句子和一般现在时同义。用现在进行时表示问者的关切心情。 How are you feeling today? （How do you feel today?你今天感觉如何？

Why are you looking（do you look）so sad? 为什么你看起来这么愁眉苦脸的样子呢？

2、结构：be(am/is/are)+动词ing(现在分词)

1）肯定句：主语+ be + v-ing. + 其他. 如：The children are playing in the park. 2) 否定句：主语+ be + not + v-ing. + 其他. 如：I am not talking to you. 3）一般疑问句：Be +主语+ v-ing.+其它? 如：Are you talking to me？

4）特殊疑问句：特殊疑问词+一般疑问句? 如：Who are you talking to？ 3、动词ing现在分词的变化规则

1) 直接加ing: do- doing play- playing cry- crying fly- flying go- going

2）双写最后一个辅音字母，再加ing:

run- running, get- getting, let- letting, begin- beginning， put-putting， sit-sitting， swim- swimming，cut- cutting , shop- shopping , plan- planning . 3）去掉最后一个不发音的e，再加ing:

dance- dancing, wake- waking , take- taking, practice- practicing , write- writing , have- having

4） 改ie为y，再加ing : die(死亡)—dying, tie（系）— tying lie（说谎）- lying 4、【注意】表状态、感觉、情绪、精神活动的动词不可用于进行时如：

believe（相信），doubt（怀疑），hear，know，understand，belong（属于），think（认为），look（看起来），show，mind，have，sound（听起来），taste（尝起来），care，like，hate，love， 例如：Danny: The doorbell is ringing. May: I know. I hear it. 【信息词】look，liste，now，

Unit_4_save_the_trees_单元综合测试

一、词汇 （共20小题，每小题1分；满分20分）

A）选择并抄写单词。

1. A doctor’s work is to __________( save, kill ) our lives . 2. A __________( pine, grass ) is a kind of tree . 3. Trees take in harmful _________ ( oxygen , gases ) . 4. Buses make our lives _________ ( quickly , convenient ) . 5. I am ________ ( read , reading ) .

6. They’re important fighters _______ ( for, against ) air pollution. 7. The _______ ( furniture, furnitures ) made of wood is very expensive. 8. My mother bought _______ ( alive, living ) fish today. 9. _______ ( Harmful, Harmless ) gases are bad for our health.

10.I want to ________ ( ask, discuss ) the question with you.

B) 根据汉语提示，写出单词的正确形式

11. Good soil ( 土地 ) will _________ fine crops. ( 生产 ) 12. We know that trees do two _________ things to the air . ( 主要的 ) . 13. Look! He is _________ the holes on the ground. ( 挖 ) . 14. Which ________(雨林) is the largest in the world? 15. There are many kinds of _________ (松树) in this park.

C) 根据括号内所给词的适当形式填空 16. This tree has green ________ all year round. ( leaf ) 17. We can learn a lot of ________ things. ( use ) 18. Look! The bus _________ . ( come )

19. Trees are the biggest and oldest ________ things on the earth. ( live ) 20. We should do some exercise to keep us ________. ( health )

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B

India and China are famous for tea. It is the drink that comes from leaves on bushes. The bushes grow best on hills, and they like a lot of rain. They also like warm weather. The leaves contain caffeine. This can wake you up when you feel tired.

The first person to drink tea was probably a man living China about 4,000 years ago. According to history, he discovered tea when he was camping. Some leaves fell from a tea bush into a pot of boiling water. The man drank the mixture and thought it taste delicious.

Nowadays, people all over the world drink tea in different ways. For example, the Chinese sometimes add flowers to tea. The Japanese enjoy plain green tea. Arabs like tea with mint and lots of sugar. In North America, many people believe iced tea with lemon is the best drink for a hot summer day.

81. What two kinds of weather do tea bushes like?

__________________________________________________________________ 82. How can caffeine help you when you feel tired?

__________________________________________________________________ 83. When did the Chinese first discover tea?

__________________________________________________________________ 84. How do Arabs like to drink tea?

__________________________________________________________________ 85. When do many North Americans drink iced tea?

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九、书面表达 （共两节，A节5分，B节10分；满分15分）

A) 请写出五个树木在我们日常生活中的用途。

B) 用所学过的知识谈谈保护树木的重要性，写一篇60字左右的文章。

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