英语九年级全册Section A优秀ppt课件

Section A

单词

litter v.乱扔 n.垃圾；废弃物

bottom n.底部；最下部

fisherman n.渔民；钓鱼的人

coal n.煤；煤块

ugly adj.丑陋的；难看的

advantage n.优点；有利条件

cost v.花费 n.花费；价钱

wooden adj.木制的；木头的

plastic adj.塑料的  n.塑料；塑胶

cruel adj.残酷的；残忍的

harmful adj.有害的

industry n.工业； 行业

law n.法律；法规

scientific adj.科学上的；科学的

afford v.承担得起（后果）；买得起

takeaway n.外卖食物

bin n.垃圾箱

shark n.鲨鱼

fin n.(鱼)鳍

chain n.链子；链条

ecosystem n.生态系统

reusable adj.可重复使用的；可再次使用的

transportation n.运输业；

短语

be harmful to对……有害

at the top of在……顶部或顶端

the food chain食物链

take part in参加

turn off关掉

pay for 付费；付出代价

take action采取行动

句型

1.We\'re trying to save the earth！我们正在努力拯救地球！

2.The air is badly polluted.这里的空气污染很严重。

3. No scientific studies have shown that shark fins are good for health. 没有科学研究表明鲨鱼鳍对健康有利。

4. We should help save the sharks. 我们应该帮助拯救鲨鱼。

Section B

单词

recycle v.回收利用；再利用

gate n.大门

bottle   n. 瓶子

president n.负责人；主席；总统

work n.（音乐、艺术）作品

metal n.金属

napkin n.餐巾；餐巾纸

inspiration n.灵感；鼓舞人心的人（或事物）

iron n.铁

creativity n.创造力；独创性

短语

throw away扔掉；抛弃

put sth. to good use好好利用某物

pull…down拆下；摧毁

upside down 上下颠倒；倒转

bring back恢复；使想起；归还

句型

1. Do you often throw away things you don't need anymore? 你是否经常把你不再需要的东西扔掉呢？

2. Have you ever thought about how these things can actually be put to good use? 你曾经考虑过怎样将这些东西好好利用吗？

3. The windows and doors come from old buildings around her town that were pulled down. 门窗来自她所住的镇上被拆除的旧建筑物。

4. She opened a small shop where she sells her bags, and she has also set up a website to sell them online. 她开了一家小店卖她制作的包，并且她还开了一家网店出售它们。

语法

现在进行时；被动语态；现在完成时

知识目标

复习现在进行时、现在完成时和被动语态等的用法。

能力目标

以“保护环境”为主题，运用本课相关句型与他人展开讨论；能向大家介绍有哪几种污染类型，怎样回收利用废弃物品等。

情感目标

体会到保护环境的重要性，学会保护大自然、保护地球，从身边的小事做起，号召大家参与到保护环境的行动中来。

类别

学习重点

重点单词

litter, bottom, fisherman, coal, ugly, advantage, cost, wooden, plastic

重点短语

close down, play a part in, clean up, cut down, instead of,

make a difference, lead to

重点句式

1. It used to be so clean.

2. Everyone in this town should play a part in cleaning it up！

3. The air has become really polluted around here.

4. Well, to cut down air pollution, we should take the bus or subway instead of driving.

写一写

1.垃圾litter            2.底部bottom           3.渔民fisherman

4.煤coal               5.丑陋的ugly           6.优点advantage

7.花费cost             8.木制的wooden        9.塑料plastic

译一译

1.关闭close down              2.参与；起作用play a part in

3.打扫干净clean up            4.减少cut down

5.代替instead of               6.起作用；有影响make a difference

7.过去常常used to             8.通往；导致lead to

背一背

1.它过去是那么干净。

It used to be so clean.

2.这个镇上每个人都应该参与清理河流。

Everyone in this town should play a part in cleaning it up!

3.这附近的空气真的被污染了。

The air has become really polluted around here.

4.为了减少空气污染，我们应该乘公汽或地铁，而不开车。

To cut down air pollution, we should take the bus or subway instead of driving.

新课导入

There's more and more pollution in the world now, such as noise pollution, air pollution, water pollution and so on. Is there any pollution in your hometown? Please discuss with your partner.

【完成教材1a~1c的教学任务】

1.要求学生仔细看1a的图片，并完成相应练习。

2.请2~3名同学展示自己的答案，老师可做适当的补充并总结。

3.听录音，完成1b的练习，让学生模仿1c中的对话，用1a中的信息编造自己的对话，并请2~3组同学当堂演示。

典例参考

A: The street was so noisy.

B: But it used to be quieter.

A: Yes, but there are too many shops playing loud music.

B: Everyone in this city should play a part in cutting down noise.

【语法提要】

1.used to

used to为固定结构，意为“曾经；过去常常”，表示过去存在或经常发生但现在已经停止的行为或习惯，后接动词原形。

例句：We used to live in London. 我们曾在伦敦居住过。

She used to be really quiet, but now she is very outgoing. 她过去真的很文静，但是现在她很外向。

注意：used to不与表示过去的时间状语连用。它的否定结构为“主语 + didn't + use to+动词原形”；它的一般疑问结构为“Did+主语+use to+动词原形+其他？”或“Used+主语+to+动词原形+其他？”。

例句：She didn't use to / usedn't to come.她过去不常来。

Did he use to be a writer？=Used he to be a writer? 他过去是名作家吗？

拓展：be / get used to sth. / doing sth.，表示“习惯于/适应于某事/ 做某事”。其中used是形容词，意为“习惯；适应”。

例句：I am used to getting up early. 我习惯早起。

You'll soon get/be used to his sense of humor. 你不久就会适应他的幽默感。

2.play a part in

play a part in意为“参与某事；在……方面起作用”，后接名词、代词或v.-ing形式。play an active part in (doing) sth. “积极参与（做）某事”；play an important part in (doing) sth.“在（做）某事中发挥重要作用”。

例句：She plays an active part in politics. 她积极参与政治活动。

I want to play an active part in school activities. 我想积极参加学校活动。

Public transportation plays an important part in our daily life. 公共交通在我们的日常生活中发挥着重要作用。

【问题探究】

1. There used to be (过去有) so many trees on the hills.

2. We should play a part in cleaning (clean) the city up.

【完成教材2a~2d的教学任务】

1.要求学生翻开课本P98。播放第一遍录音，完成2a,2b的听力任务。

2.要求学生听第二遍录音，并逐句进行跟读。

3.听力内容巩固训练。要求学生根据所听到的内容完成下列各句。完成后要求若干学生给出自己的答案，以巩固对听力内容的理解。

(1) The air has become really polluted around there.

(2)I used to see the stars clearly.

(3)People are also littering in public places.

4.大声朗读听力材料。

5.播放听力材料，要求学生模仿听力内容，利用2a,2b信息谈论空气污染情况，然后邀请2~3名同学当堂表演，看谁的表现最佳。

6.两人一组练习2d的对话，并让2~3组同学当堂表演。

7.教师根据学生的理解对其重难点进行讲解。

【语法提要】

1.cost

cost作动词，意为花费，它的主语只能是物，不能是人。

辨析：take, spend, cost与pay

四者均用作动词，表“花费”，但其用法却大不相同。具体区别如下表：

instead of作介词短语，意为“代替;而不是”，后面常跟名词、代词或v.ing形式。instead of doing sth.意为“代替做某事”。

例句：She went to school instead of staying at home. 她没有待在家里而是去上学了。

辨析：instead of与instead

【问题探究】

(A)1.（山东青岛中考）—How much is the ticket to Central Park?

—A one-way ticket______$40, and you can_____ another $20 for a round-trip.

A. costs; pay   B. cost; spend      C. pay; spend      D. spends; pay

(B)2. We went to climb mountains _______going shopping.

A. instead     B. instead of       C. prefer to        D. take the place

（A）1.(贵州黔西南州中考)Maria         watch TV, but now she        listening to music.

A. used to; is used to         B.is used to; used to

C. used to; used to           D.is used to; used to

（C）2.Everyone should play a part in            the environment.

A. protect    B. protects     C. protecting    D. protected

（B）3.(湖北十堰中考)—Smart phones are more and more popular now.

—So they are. But they still _______ too much.

A .pay      B. cost        C. take          D. spend

（C）4.We should be grateful(心存感激的) for what's right instead of______about

what's wrong.

1. complain   B. complains    C. complaining      D. complained

本课时通过听、说、读、写训练让学生对污染的词汇及其相关的语言知识有了初步的掌握，并能听懂和表达有关污染的现象、导致污染的原因及治理措施。

教学过程中老师的疑问：

教师点评和总结：