广州版七年级下册U4savethetrees讲义与教案.doc

龙文教育一对一个性化辅导教案

学生

学校

年级
七年级
次数
第 次
科目
英语
教师

日期

时段

课题
Unit 4 Save the trees
教学重点
1. Words and expressions in this unit
2. Grammar: the present continuous tense
教学难点
The sentence varieties of the present continuous tense: yes/ no questions and wh- questions
教学目标
Use words and expressions fluently; master the skills of how to use the present continuous tense properly.

教
学
步
骤
及
教
学
内
容
一、教学衔接：
A. homework and explanation
B．five minutes test for the last class
二、内容讲解：
Step 1: Check about the homework and explain about the mistakes; a five minute check about last class.
Step 2: Lead in to this Unit: Imagine what roles trees play, and what the world will be if the trees disappear one day.
Step 3: Explain the language points in the reading part and the more practice part.
Step 4: Explain the students how to use the present continuous tense properly.
Step 4: Do some exercises related to this unit
三、课堂总结与反思：
四、作业布置：
复习整理本节课学习的知识，睡觉之前花5分钟时间复习巩固
管理人员签字： 日期： 年 月 日
作业布置
1、学生上次作业评价： ○ 好 ○ 较好 ○ 一般 ○ 差
备注：
2、本次课后作业：

课堂小结

家长签字： 日期： 年 月 日

Unit 4 Save the trees
Name: Date:
Steps
Step 1: Check about the homework and explain about the mistakes; a five minute check about last class.
Step 2: Lead in to this Unit: Imagine what roles trees play, and what the world will be if the trees disappear one day.
Step 3: Explain the language points in the reading part and the more practice part.
Step 4: Explain the students how to use the present continuous tense properly.
Step 4: Do some exercises related to this unit
Focus: Words and expressions in this unit
Grammar: the present continuous tense
Difficulties: The sentence varieties of the present continuous tense: yes/ no questions and wh- questions
Lead in
Look and imagine:

Imagine what roles trees play in the world. What will it be like if there are no trees any more.

Words and Expressions
高频词：（中译英）
1. 有害的
2. 例子
3. 与…做斗争

4. 讨论
5. 树枝
6. 生产
7. 反对
8. 主要的
9. 氧气
10. 家具
11. 想象
12. 方便的
13. 搬， 扛
14. 疾病

高频短语：
1.吸收
2. 来自
例如
确切地说
环顾四周
由…制成
大量的
对…有用，有好处
Reading
高频词组运用
1 . harmful 有害的
Strong sunlight can to your baby .
【反义】harmless 无害的；无危险的
Don’t be frightened—— these insects are .
2. produce 产生；生产
The factory cars .
【链接】product 产品；制品
The company has just launched (一个新产品).

3. major 主要的
There are airports in all the cities.
【近义】main 主要的
【反义】minor 较小的；次要的

4. convenient 方便的
Let’s meet on Friday . What’s the most （方便的时间）for you?
【反义】inconvenient 不方便的
【链接】conveniently 方便地
We live close to the shops.

5. furniture 家具
All the furniture （be）very good .
【提示】furniture 是不可数名词，表示“一件家具”时需要用a piece of furniture . 如：The only piece of furniture in the room was a large bed.

6. imagine 想象设想
Can you life without electricity ?
I closed my eyes and I was lying on a beach.
【链接】imagination想象力；想象

7. Fight against 意为“对抗；反对；与……作斗争”。如：
He has tried every way to the disease.

8. know about 意为“了解；知道……的事情”。如：
How much do you know about (他) ?
know more about 意为“更多地了解；更了解”。如：
I want to know about the USA.

9. in many ways 意为“在很多方面”。如：
We can think about the problems .

10. “keep + something + 形容词”的结构来表达“使……保持（怎么样）的意思。如： You must keep your own room （干净）.

11. “make + something + 形容词”的结构表达“使……变得（怎么样）的意思，其中的形容词也可用其比较级形式。如：
We should make our city （干净）.
Let’s make our school （更漂亮）.

12. in one’s daily life 意为“在某人的日常生活中”，当表示“不同人的日常生活”时，则使用复数lives。
如: We have so many solar products in our daily .

13. come from 意为“来自”。如：I the south of China.

14.比较：for example 与such as
这两个短语都可以作“例如”解。for example 用来举例说明某一论点或情况，一般只举同类人或事物中的“一个”为例，可位于句首、句中或句末。如：
A lot of things are invisible. For example , we cannot see air at all.
such as 用来列举事物时，一般列举同类人或事物中的几个例子，插在被列举的事物与前面的名词之间，as 后面不可有逗号。
1) Some of the rubbish , food , paper and iron , rots away over a long period of time .
2) Many languages , English and French , , have many similar words .

15. Look around this room.
look around 意为“环顾……”。
如：I’d like to your company.

16．(be)made of 意为“由……制成”。
这是一种被动语态，但我们常常把它当做一个固定搭配来记忆。如：The box is made of cardboard.
辨析：be made of 与be made from这两个词组都有“由……制成”的意思。但使用前者时，成品可以看得出原材料；而。使用后者时，成品看不出原材料。
试比较：
The chair wood. (木质的椅子可以看出原材料是木头)
Paper usually wood. (纸看不出原材料是木头)

17. cut down 意为“砍倒……；砍伐……”。
如： His mother the beanstalk yesterday.

18. millions of 意为“数以百万计的大量的”。如：
of people around the world eat these foods every day.
下面这些词组也十分常用：
hundreds of成百上千的 thousands of 成千上万的
tens of thousands of 数以万计的 hundreds of thousands of 数以十万计的

19. stop doing something 与stop to do something
stop doing something 是“停止做某事”之意，doing是stop的宾语，表示要停止的动作；stop to do something 意为“停下来开始做某事to 是stop 的状语，表示目的，是要开始做某事。试比较：
The two girls stopped （talk） when they saw me.
The two girls stopped （talk）to me when they saw me.

20. take in 意为“吸收”.如： We must nutritious (营养)food every day.

随堂练习
A. 根据句意和所给的首字母完成下列句子。
1. He climbed up the tree to get back the kite among the b__________.
2. We join the army because we want to f____________ for our country.
3. Before we move in our new house, we need to buy some f___________.
4. Can you i___________ what the world would be like without water?
5. The little factory p___________ two million pencils every day.

B． 语言知识运用。
1. The doctor gave him some pills to __________ the pain.
A. take off B. take in C. take on D. take away
2. Do some sports every day. It will help you keep __________.
A. healthy B. healthily C. kindly D. excitedly
3 —There are _________ people here in our city.
—Actually, there are __________ people here in our city.
A. Millions of; three million B. Millions of; millions
C. Millions of; three million of D. Million of; three million of
4、 —What time is it now?
—It is 20:00. I think we should stop __________ first.
A. having supper B. have supper
C. to have supper D. to having supper
5、 —I bought ____________ furniture.
—Really? What ________?
A． a new; is it made of B. a new; does it made of
C. a new piece of; is it made of D. a new piece of; does it made of
6、 Look at this old bridge! It is made __________ stones.
A. from B. of C. into D. Up
7、 I _________ the swimming club if you ________ it.
A. join; join B. will join; join C. join; will join D. will join; will join
8、 He heard someone calling his name, so he stopped and ________. But he couldn’t see any one.
A. looked around B. looked up C. looked into D. looked for
9、 —we can’t live without trees. They make our lives _________.
—I agree. We should stop people _________ trees.
A. convenient; to cut down B. conveniently; to cut down
C. convenient; cutting down D. conveniently; cutting down
10、 the little dog helps his owner _________ many ways __________ his daily life.
A. in; at B. on; in C. in; in D. on; on
三、 根据中文提示完成下列句子。
1、 事实上，他是一个好人。_____ __________，he is a good man.
2、 许多家具是由木材做成的。
A lot of __________ ___________ __________ ________wood。
3. 作家们的灵感许多都来源于他们的日常生活。
Most of the writers’ ideas _______ _________ their ______ ___________.
4、 换掉你的热水器，否则你将会吸入过量的有害气体。
Change your water-heater, ________ you will _________ ______ too much.
5、 如今，许多女性都能兼顾事业和家庭，例如Jane就是其中的一位。
Nowadays, many women have a career and a family —Jane _______ _________.
More Practice
1. It covers five and a half million square kilometers of the Amazon Basin and spreads across nine counties.
它覆盖了亚马逊流域550万平方千米的面积，横穿了9个国家
（1） cover 为动词，意为“覆盖，遮盖”。Cover…with…. 意为“用。。。把。。。盖上”，be covered with …. 意为“被。。。覆盖着”
The road is usually covered with snow in winter. 冬天马路常常被雪覆盖着
（2） across 为借此，意为“穿过，横穿”，表示在物体的表面上或沿着某一条线的方向而进行的动作。如过河，过桥，过马路等。
He walked across the road carefully. 他小心的过马路。
练习：
用一张厚纸盖在一杯水上
a glasss of water a piece of thick paper

2. Many living things lose their homes because of deforestation.
许多生物因为森林砍伐失去家园
Because of “因为”,介词短语，其后接名词，代词，动名词，what从句等
The football match was put off because of the rain
因为下雨，足球赛延期了
练习：
由于年龄关系他失去了工作
He lost his job his age.

3. As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing,
结果，世界上动物，鸟类，昆虫和树的种类和数目都正在减少
（1） as a result “结果，因此”
He didn’t practice, as a result he lost. 他没有练习，因此输了
（2） the number of “…..的数量”，后接复数名词，但谓语动词要用单数形式，常跟large, small 等词作表语
The number of students in our class is 50.
我们班的学生人数是50
拓展：
a number of 意为“大量，许多”，等于many, 接复数名词作主语时，谓语动词用复数形式，number 前可加small, large, huge等表示程度
A number of students are playing football. 许多学生正在踢足球
练习：
1. 交通十分拥挤，因此我们没能准时到达
The traffic was very heavy. ,we didn’t arrive on time.
2. 我们学校的学生人数是2000
the students in our school is 2000.
Grammar
构成:主语+be+动词ing〔现在分词〕形式
I+am+v-ing
we/ you/ they+are+v-ing
he/ she/ it +is+v-ing
定义：现在进行时表示现在或当前一般时间正在进行的动作。

【No. 1】现在进行时的构成
  现在进行时由"be+v-ing"构成。be应为助动词，初学者最容易漏掉，它应与主语的人称和数保持一致。

【No. 2】现在进行时的应用
(1) 当句子中有now时，常表示动作正在进行，这时要用现在进行时。如：
  They are playing basketball now.现在他们正在打篮球。
(2)以look, listen开头的句子，提示我们动作正进行，这时要用现在进行时。 如： Listen！She is singing an English song.听，她正在唱英语歌。

(2) 【No. 3】现在进行时的变化
  肯定句式：主语+be( am, is, are)+现在分词+其它.
  否定句式：主语+be(am, is, are) +not +现在分词+其它.
  一般疑问句：Be(am, is, are) +主语+现在分词+其它？
  特殊疑问句：疑问词+be(am, is, are)+主语+现在分词+其它？
  对现在进行时的特殊疑问句的回答，它不可以用Yes或No直接作答，要根据实际情况回答。
       有一些特殊变化(或者说以ie为结尾的重读闭音节的动词)的现在分词〔有3个〕,:lying—lie, dying ―die tying―tie 这些以ie结尾要去e再把I变y再加ing．
练习
1、 在横线上写出下列动词的现在分词形式。
carry ______ eat ______ burn ______ send ______ rain ______
become ______ argue ______ escape ______ live ______ lie ______
die ______ begin______ put ______ sit ______
2、 请改正句子中错误的地方。
B. I watching television. _________________________
C. He is listen to music. _________________________
D. They are eat lunch. _________________
E. She is write a letter. _________________________
F. Ye Qing is shop. _________________________
3. 用所给动词的正确形式填空。
Ada: Hi, Bob.
Bob: Hi, Ada. What __________________ (you/ do)
Ada: We __________________ (play) at the beach. Grace __________________ (fish) and Ivan _____________ (swim).
Bob: What __________________ (Johnny/ do)?
Ada: He __________________ (listen) the music. There are lots of people here. Carol and Ted __________________ (play) volleyball. Jenny and Henry __________________ (play) the guitar. And Dora __________________ (eat) ice cream.
Bob: _____ (you/ have ) a good time?
Ada: Yes, we __________________ (be). Dad, see you later.
4、单选
1. Look! Peter ________ TV happily, but his parents are busy in the kitchen.
A. is watching B. watches C. watched D. will watch
1. ——May I speak to the principal?
——Sorry, he ______ a meeting now. Can I take a message?
A. is having B. had C. has D. will have
2. Where is Sally? Her mother _______ for her everywhere.
A. looks B. looked C. is looking D. was looking
3. ——Dad _____ for paris tomorrow.
——Really? Let’s go and ask him to bring back some presents for us.
A. Are going to leave B. Is leaving C. Left D. leaves
4. Listen! ________ you _________ someone crying?
A. Do; hear B. Are; hearing C. Did; hear D. Will; hear
5. ——Can your brother make a model airplane?
——Yes, these weeks he ________ a new school.
A. builds B. is built C. will built D. is building
6. As we know, things like that ________ all over the world every day.
A. Happens B. Are happened C. Are happening D. Will be happened
7. ——Sam, come downstairs, please. I need your help.
——I don’t think I can, mum. I _______ on the phone.
A. talk B. talked C. talking D. am talking
5、用所给词的正确形式填空。
Simon ________(be) a businessman. He ________(have) two sons. One _______(study) in No. 1 Middle school, and the other is studying in No.2 Middle School. These days, Simon _______(do) a big project and he ________(leave) Guangzhou next week. His sons ________(be) very happy because they can do everything they like, such as ________(sleep) late, _______ (watch) TV a lot and ________ (eat) a lot of ice-creams. They _______(look) forward to it.