Unit 2 Topic 2 Section D课件+内嵌音频（仁爱科普版九年级上册）

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Unit 2 Saving the Earth
Topic 2 All these problems are very serious.
Section D
Learn some new words and phrases.
Words: avoid, discover, thirsty, nearly, law
Phrases: day by day, be short of
Be able to use some useful expressions.
But people’s need for water is increasing day by day.
While nearly of the earth is covered with water, we are still short of drinking water.
Master Indefinite Pronoun and Adverb.
What should we do to protect the environment
We should do everything we can to protect the environment.
We should/shouldn’t …
How do sandstorms come into being
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.
None
anywhere
Everyone
everything
Indefinite pronoun and adverb
一、构成。
不定代词、副词是由some, any, no, every与thing, one , body, where 等构成。
e.g. something, someone, nowhere, anybody等。
二、用法。
1．通常情况下,由some, every加后缀构成的不定代词、
副词常用于肯定句；由any加后缀构成的不定代词、副
词常用于疑问句、否定句中。
e.g. You will find your bag somewhere.
Can you hear anything
2. 注意：当说话人希望得到肯定答复,或是表示建议、请求等意图时,something, somebody, someone也可以用于疑问句中。当要表达“任何人；任何事物”时,anything, anybody, anyone也可以用于肯定句中。
e.g. Would you like something to drink
Anybody can do it except Tom.
1. When Anna opened her wallet, she was surprised to find ________. It was empty.
A. nothing B. anything
C. something D. everything
2. There's ________ wrong with the engine—it's making strange noises.
A. nothing B. anything
C. everything D. something
3. Did you do __________ during the last summer vacation
A. something special B. special something C. anything special
A
D
C
______ a result（结果）, a lot of rich land has changed _____（变为）desert.
Trees can stop the wind from ______ the earth _____(吹走）.
We shouldn’t leave rubbish ____________(到处).
All these problems are very serious, _____(所以) we must do something now.
into
blowing
away
here and there
so
As
Functions
water pollution
Imagine you are water.
Please tell us your functions, problems and wishes.
I’m water. I used to be …
Factories usually pour …
I wish human beings …
1a Read the passage and put the following paragraphs in the correct order.
( ) The sea seems to have the best answer. There is plenty of water in the sea. But we need to take the salt away from the sea water. This is very expensive. If scientists can find cheaper ways to do it, we can solve the problem of the shortage of water.
( ) How can we avoid a serious water shortage First, we should save water and not waste it. Second, we should protect our water resources and not pollute them. Third, we should discover ways to reuse water. Scientists have made some progress in this field. Today, some large cities are reusing their water. But people’s need for water is increasing day by day. We still don’t have enough water. What else can we do
( ) Although the world is hungry, it is even thirstier. While nearly of the earth is covered with water, we are still short of drinking water. This is because about 97% of the water on the earth is sea water. So we can’t use it for watering plants or drinking directly. Humans can only drink and use fresh water from places including rivers, lakes and underground.
1
2
3
名词
avoid 代词
动名词
v.防止，避免
e.g. He avoided answering my questions.
不定式不可以做宾语。
1. How can we avoid a serious water shortage
我们如何避免水资源短缺呢？
thirsty
adj.缺水的;（口）渴的
3.Although the world is hungry, it is even thirstier
虽然世界是饥饿的，但是它更渴。
v.发现，找到
2….we should discover ways to reuse water.
我们需要找到再利用水的方法。
nearly
adv.几乎，将近
nearly 与almost 区别 ：
almost 多表示时间、程度、距离、进度， 且almost 可以修饰more than, too, nothing, nobody, nowhere, no one, none, never 等词，nearly 则不行。nearly只与not连用。
e.g. I have almost never seen him.
I nearly didn’t hear what the teacher said in class.
4.While nearly of the earth is covered with water , we are still short of drinking water. 尽管地球差不多四分之三都被水覆盖，我们仍然缺少饮用水。
1b Read 1a again and answer the questions.
1.Why is our world thirsty when of the earth is covered with water
2. What can we do now to avoid the water shortage
Because about 97% of the water on the earth is sea water, we can’t use it for watering plants or drinking directly.
First, we should save water and not waste it. Second, we should protect our water resources and not pollute them. Third, we should discover ways to reuse water.
3. What will be the best way to solve the problem in the future in the passage
4. Do you know any other ways to solve the problem
What is it
To find cheaper ways of taking the salt away from the sea water.
1b Read 1a again and answer the questions.
2 Discuss in groups different ways of protecting and saving water.
Write down the key information.
Example:
Pass laws(n.法律) against water pollution.
Collect and reuse waste water.
… …
Write a Passage
水资源问题已成为举世瞩目的重要问题之一，请发挥你的想象，并结合所学知识，请以“How to protect water resources 为题，写一篇英语短文。
内容包括：1. 写出水资源的现况。(2到3点）
2.提出保护水资源的方法（2到3点）
3. 呼吁大家节约水，保护我们的地球。
参考词汇： 保护 protect 水资源 water resources 把……倒进 pour into 废水 waste water
How to write a passage

3. 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.
_____
My dear friends,
Water is very important to human beings. Let’s do something to protect and save it.
First, we should protect our water resources and not pollute them. The government should also pass laws against the water pollution. Second, we should save water in our daily life, turn off the taps in time, take a shower instead of a bath, and always remember to collect and reuse water. Third, let’s try to spread the message about protecting and saving water. Make more people around us know the problem of water shortage and how to help solve it.
Let’s try our best to save water and our planet.
Student Union
You can write it like this.
1. some words
2. some phrases
3. some sentences:
1.Talk about ways of saving water.
2.Summarize and use the indefinite pronoun and adverb correctly.
3. Write a proposal.
We learn:
We can:
If we want to use the sea water, we must ______ ___(拿走） the salt from the sea water.
How can we _________(避免) a serious water shortage
We should __________(找到) ways to reuse water.
People’s need for water is increasing ____________(一天天).
Although the world is hungry, it is even ________(更渴的)
While ___________(几乎，差不多) of the earth is covered with water, we are still short of drinking water.
take away
avoid
discover
day by day
thirstier
nearly
Memorize the useful expressions and key sentences which we learn today.
2. Preview Unit 2 Topic 3-Section A.