Unit 2 Saving the earth.Topic 2  All these problems are very serious.学案(4课时)

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名称 Unit 2 Saving the earth.Topic 2  All these problems are very serious.学案(4课时)
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更新时间 2016-01-30 15:37:32

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Topic 2 All these problems are very serious.
Section A
一、学习目标:
1、学习不定代词anything, something并复习现在完成时。
2、掌握以下生词、短语:sand, sandstorm, desert, although, reduce, human being, completely, change into, a number of, stop…from, die out…
二、自主预习:
(一)翻译:
1、结果
2、砍倒
3、把……变成
4、阻止某人做某事
5、人
6、对……有害
7、吹走
8、冲走
9、大量、许多
10、形成
11、灭绝,消失
12、在过去
13、……的重要性
(二)你能在1a中找出任何不定代词吗?你还能列举出更多的不定代词吗?
______________________________________________________
______________________________________________________
三、合作探究:
1、1a.
①Listen and finish 1b.
②Listen again, and answer the questions.
Q1:What’s the weather like today
Q2:What causes these sandstorms
Q3:Do we still need to do something to protect the environment
③Enjoy the flash and finish 1c.
2、Read.
①Read 1a and find out the sentences of Present Perfect.
②Read and discuss.
a. The wind outside is blowing strongly句子中的strongly可以换成hard吗?
b. A lot of rich land has changed into desert.
a lot of=____________________
修饰____________________(u/c)
change into译为______________________________
eg:水变成了蒸气(steam)________________________________________
c. Tress can stop the wind from blowing the earth away.
stop sb from doing sth.译为________________=______________________
eg:大雪阻止游人离开山顶。
__________________________________________
d. People have out down such a large number of trees that…
a number of译为________________________________________
修饰______________________________(U/C)
the number of译为________________________________________
作主语时,谓语要用_________________(单数形式/复数形式)
eg:用a number of和the number of填空:
There are __________ cars in the parking lot. __________ the cars is about 200.
四、当堂评价:
1、Retell 2a.
K:wind, sand, anything
M:sandstorms
J:at down, as a result, change into
M:affect
J:stop…from…, blow…away
K:can be saved
J:wash…away
K:is harmful to, although, do something
2、Finish 2.
3、Discuss in pairs, complete 3.
4、Listen and complete 4.
五、拓展提升:
1、Use“someone, something, anything, somewhere, anywhere.”to fill in the blanks.
⑴Lily, world you like __________ to drink
⑵Cindy is very busy now. She needs __________ help her.
⑶Is there __________ wrong with your computer
⑷Jim looked for his pencil-box __________, but he didn’t find it.
⑸I stayed at home last week, I didn’t go __________.
2、根据Part 3的图,小组讨论风暴的形式,并且写一篇有关它的短文。
六、课后检测:Section A.Topic 2 All these problems are very serious.
Section B
一、学习目标:
1、学习不定代词none, neither, everyone等的用法。
2、学习副词anwhere, everywhere的用法。
3、引导学生如何正确保护环境。
二、自主预习:
(一)英汉互译:
据说 结果
世界上最大的煤炭生产国和消费国
so something useful none of us
here and there 在公共场合吐痰
践踏草坪 保护野生动物
be untidy Worst of all
制定规章 违反规定
(二)根据句意及首字母提示补全单词。
1、It’s no use for some children to p__________ them for their wrong actions. We’d batter persuade them.
2、The human being should share the Same World With the __________ animals.
3、What the man said is really a lot of __________. It’s no use for us at all.
4、You room is so dirty and u__________. You’d better tidy it at once.
5、N__________ of his parents is a worker.
三、合作探究:
1、Listen to 1a and number the pictures in 1b.
First, work alone, then, check together.
2、Read 1a and complete the table in 1c.
3、It says that China has become the world’s largest producer and user of coal.
①It says译作____________________
②the world’s largest producer and user of coal译作____________________
4、As a result, air pollution has become a serious problem.
①as a resuct译为____________________用于____________________
译:结果,我们都迟到了。
____________________________________________________________
②as a result of…译作__________用于句__________(首/中/尾)相当于____________________
Because of the bad weather, Flight No. 528 has been put off.(同义句转换)
__________ __________ __________ __________ the bad weather, Flight No. 528 has been put off.
5、None of us likes pollution.
①none指三者或三者以上的“没有”“都不”既可指“__________”也可指“__________”常与of连用,既可修饰__________,也可修饰__________。构成“none of+名/代”结构,当名词是不可数名词时,谓语动词用__________,当名词是可数名词时,谓语动词用__________。
eg:None of these buses ____________________.(去那里)
②none还可用以回答__________引起的问句。
eg:→__________ pan pals do you have →None.
③everyone的用法呢?(查询工具书解答)
四、当堂评价:
1、先听1a部分录音,然后齐读1a,再以两人为单位,借助所给词复述表演对话(article, about, air pollution, the world’s largest producer and user of coal, serious, government, protect, none, spit anywhere in public, grass, flowers, protect the environment.)
2、听录音,帮助康康完成part 2的信,然后大声朗读。
五、拓展提升:
1、朗读并理解第一句,然后完成第二句并大声朗读,注意弱读,连读和语调。
eg:As we all know, air pollution has become a serious problem. Everybody knows air pollution has become a serious problem.
①None of us would like to see dirty water and rubbish lying around.
__________ would like to see the dirty water and rubbish lying around.
②We should follow social rules and spit nowhere in public.
We should follow social rules and not spit __________ in public.
③We should do everything to protect the environment in our daily lives.
We shouldn’t do _________ to destroy the environment in our daily lives.
2、补全对话:
A:What’s the water with you
B:(1)______________________________.
A:How long have you been likes this
B:(2)______________________________.
A:Since last week That sounds terrible!
B:The chemical factory produces terrible gas. The bad air makes my chest hurt, please read this article.
A:(3)______________________________.
B:It’s about air pollution in China. Today, air pollution has become a serious problem.
A:(4)______________________________. What should we do as a student
B:(5)______________________________.
六、课后检测:
完成《同步练测考》相关习题。Topic 2 All these problems are very serious.
Section C
一、学习目标
1、Teaching and learning aims and demands.
①New words and phrases.
take away __________ oxygen/ /__________, _______
hole/ /__________, __________
ozone layer/ /__________
radiation/ /__________, __________
directly/ /__________, __________
carbon dioxide/ /__________, __________
form/ /__________, __________
blanket/ /__________, __________
escape/ /__________, __________
rise/ /__________, __________
the greenhouse effect__________
refer / / to__________
②Talking about the cause and effect.
Indefinite Pronoun and Adverb.
2、Teaching and learning difficult points.
①Too much harmful radiation from the sun passes through the hole and reaches the earth directly.翻译:________________________________________
②It causes the level of the oceans to rise and the climate of the earth to change.翻译:__________________________________________________
二、自主预习:
1、翻译:
在此期间 全世界
雨下得很大 风刮得厉害
土壤流失 一种特殊的叫臭氧的氧
对……重要 对某人来说做某事很重要
太多有害射线 穿过这个洞
走过街道 构成一条环绕地球的毯子
温室效应 引起海平面上升
引起地球气候变化
2、Choose suitable title for Paragraphs 2—6. Then write it down in front of each paragraph.
A、Traffic pollution B、Factory pollution C、Fewer trees
D、The Ozone hole E、More carbon dioxide
三、合作探究
1、When it rains or when the wind blows, the earth is taken away. Too much harmful radiation reaches the earth directly.
这两句中的earth是指同一事物吗?如果不是,第一句中的earth指__________,第二句中的earth指__________。
earth着重指与天空相对的“土地”,还泛指泥土;soil主要指用于种植庄稼的“土壤”;ground主要指大地表面;land着重指与河湖、海洋相对的陆地。
翻译:⑴把树放进坑里,然后用土重新将坑填满。
_____________________________________________________________
⑵日光、空气、水分和土壤对植物生长不可或缺。
______________________________________________________________
⑶那个包掉到地上了。
______________________________________________________________
⑷大片的良田消失了。
______________________________________________________________
2、Some things we have done are very good for the earth while others are bad.
句中while __________(词性) __________(意思)相当于_______________.
I was watching TV while my mother was reading novels last night.
此句中while __________(词性) __________(意思)
翻译:⑴他是工人而我是教师。
___________________________________________________________
⑵下雨的时候,他在操场上跑步。
______________________________________________________________
3、Skim 1a, then try to finish 1b.
Play the mp3. Students listen and repeat. Then read it altogether.
4、Answer some questions about the passage.
⑴How old is the earth
⑵How long have humans lived on the earth
⑶What can ozone do for humans
⑷What are the disadvantages of“the blanket”
四、当堂评价:
1、Retell the passage with the help of the key words.
2、rise, __________, __________ raise __________, __________
翻译:⑴太阳从东方升起,西方落下。
______________________________________________________________
⑵暴雨使洪水水位上涨。
______________________________________________________________
五、课后检测:
1、Rectte paragraphs 5 and 6 of the passage. 2、Finish wb Exx.Topic 2 All these problems are very serious.
Section D
Ⅰ. Learning aims.
Grammar:Indefinite Pronoun and Adverb __________ of us likes pollution.
Don’t spit __________ in public.
__________ should care for wild animals and plant more trees.
We should do __________ we can to protect the environment.
Function:
__________ a result, a lot of rich land has changed __________ desert.
Trees can stop the wind from blowing the earth __________.
We shouldn’t leave rubbish __________.
All these problems are very serious, __________ we must do something now.
New words and phrases:
shortage avoid resource discover reuse directly
seem to do, plenty of, take away, day by day, 3/4 of the earth, be short of, be covered with, on the earth, use…for doing sth.
Self-previewing:
不定代词
每个 任何一个 全都 都不 另一个
指两者
两者以上
some- any- no- every-
人物
完成表格,让学生综合归纳不定代词的用法。
Do exercises:
1、—It snowed heavily last night. Is everyone in our class here today
—Yes, and _______ of us was late for school this morning.
A、none B、neither C、call D、either
2、—Which of the two subject do you like, art or music
—_______. They are really interesting.
A、Neither B、Both C、None D、All
3、—How did you get the MP4, from a shop or by phone
—_______. I always like shopping online.
A、None B、Neither C、Both D、All
4、—Who helped you clean the classroom yesterday
—_______. I did it all by myself.
A、Someone B、Anyone C、Nobody D、Everybody
5、There has never been such a beautiful village _______ in the world.
A、anywhere B、everywhere C、somewhere D、nowhere
注解:some, any, no和every还可以与where连用,构成表示地点的副词,即:somewhere, anywhere, nowhere, everywhere.
e.g. I’ve seen him somewhere before. There was nowhere for me to sit.
6、—Is there _______ in today’s newspaper —No, there’s _______.
A、anything special, something unusual
B、anything special, nothing unusual
C、special anything, nothing unusual
D、special anything, unusual nothing
7、—You look so happy today!
—Mr. Wang says I am clever. _______ has ever said that to me before.
A、Somebody B、Anybody C、Everybody D、Nobody
合作探究:
Reading:Turn to Page 59, 1a.
1、Firstly, read the passage and put the following paragraphs in the correct order.
2、Read 1a again and do 1b. Let the Ss find out the answers to the questions.
3、Pay attention to the new words and some phrases. Read more times.
当堂评价:
Discuss in groups different ways of protecting and saving water. Write down the key information.
Example:
1、Pass laws against water pollution.
2、Collect and reuse waste water.

Write as much as possible. Then report in front of the class.
拓展提升:
Write a proposal about saving water to all the students in your school.
My dear friends,
Water is very important to human beings. Let’s do something to protect and save it. First, __________, Second, __________, Third, __________.
Let’s try our best to save water and our planet.
Exercises:
《同步练测考》Section D.