(共26张PPT)
Unit 2 Topic 2
All these problems are very serious.
Section D
Learning objectives
1. some words: avoid, discover, thirsty, nearly, law
2. some phrases: day by day, be short of
3. some sentences:
(1)But people’s need for water is increasing day by day.
(2)While nearly of the earth is covered with water, we are still short of drinking water.
4.Talk about ways of saving water.
5.Summarize and use the indefinite pronoun and adverb correctly.
6.Write a proposal.
Function
______ 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.
away
here and there
so
into
blowing
As
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.
None
anywhere
Everyone
everything
Indefinite pronoun and adverb 不定代词和副词
构成
用法
some, any, no, every+thing, one,body, where
something, someone, nowhere, anybody
肯定句
疑问句、否定句
some, every加后缀构成的不定代词、副词
由any加后缀构成的不定代词、副词
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。
New words
shortage [ t d ] n.不足
avoid [ v d] v.防止,避免
resource [r 's s] n.资源,财力
discover [d s'k v ] v.发现,找到
New words
reuse [ri ju z] v.再次使用
thirsty ['θ sti] adj.缺水的
nearly [ n l ] adv.几乎
law [l ] n.法律
law
shortage
nearly
resource
thirsty
reuse
discover
avoid
Save water
Work on 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
Paragraph 1
Read paragraph 1 and fill in the blanks.
Although the world is hungry, it is even . While nearly of the earth is 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 plants or drinking directly. Humans can only drink and use fresh water from places rivers, lakes and underground.
thirstier
covered
watering
including
Paragraph 1
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.
Why is our world thirsty when of the earth is covered with water
Read paragraph 1 and answer the following questions
Because about 97% of the water on the earth is sea water, we can’t use it for watering plants or drinking directly.
Paragraph 2
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
Read paragraph 2 and answer the following questions
What can we do now to avoid the 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.
Paragraph 3
Read paragraph 3 and answer the following questions
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.
What will be the best way to solve the problem in the future in the passage
To find cheaper ways of taking the salt away from the sea water.
Listen and follow
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.
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
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.
Language points
尽管 不与but连用
thirsty-thirstier-thirstiest
然而
be covered with 被...覆盖
be short of 短缺
use sth. for doing sth. 使用某物做某事
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.
Language points
avoid doing sth. 避免做某事
节约；拯救
水资源
make progress in sth./doing sth. 在...方面取得进步
逐日
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
Language points
seem to do sth. 似乎做某事
大量 许多
need to do sth. 需要做某事
take away 取走 拿走
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.
Read and remember
be covered with 被...覆盖
be short of 短缺
use sth. for doing sth. 使用某物做某事
avoid doing sth. 避免做某事
water resources 水资源
make progress in sth./doing sth. 在...方面取得进步
day by day 逐日
seem to do sth. 似乎做某事
plenty of 大量、许多
need to do sth. 需要做某事
take away 取走 拿走
Match phrases
be covered with
avoid doing sth.
use sth. for doing sth.
day by day
water resources
seem to do sth.
plenty of
take away
make progress in sth./doing sth.
need to do sth.
be short of
被...覆盖
使用某物做某事
避免做某事
水资源
在...方面取得进步
短缺
似乎做某事
大量、许多
取走 拿走
需要做某事
逐日
Free talk
Do you know any other ways to solve the problem
What are they
What’s it about
Work on 2
Discuss in groups different ways of protecting and saving water. Write down the key information.
Example:
Pass laws against water pollution.
Collect and reuse waste water.
… …
Work on 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.
Example
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
Project
Making Posters About Natural Resources
1.Divide the class into several groups: Water Group, Tree Group, Soil Group …
2.Each group should discuss their own uses, the problems that they face and their wishes. Then give a report in class. Example:
Uses: I am soil. Plants can’t grow without me. People use me to make many things …
Problems: Sometimes people use too many chemicals in the fields. What’s worse, they put waste into the land … So I’m hurt. Please help me.
Wishes: I hope human beings can protect and take care of me. And then I could do more useful things for them…
3. Make some posters with the result.
Exercises
1.If we want to use the sea water, we must ______ __ _(拿走） the salt from the sea water.
2.How can we _________(避免) a serious water shortage
3.We should __________(找到) ways to reuse water.
4.People’s need for water is increasing ____________(一天天).
5.Although the world is hungry, it is even __ ____(更渴的)
6.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
Thank you
