Unit 2 Saving the earth. Topic 2 All these problems are very serious.Section D 课件(共22张PPT)

(共22张PPT)
water pollution
Section D
Unit 2 Saving the Earth
Topic 2 All these problems are very serious.
Teaching aims
1.Knowledge aims：
Master some key words and phrases
2.Skill aims:
Learn to use Indefinite pronoun and adverb
3.Emotional aims:
To save water is to save our home
节约用水就是拯救我们的家园
Where there is water, there is life
哪里有水，哪里就有生命
Review复习（Indefinite pronoun and adverb）
somebody, someone, something, somewhere
anybody, anyone, anything, anywhere
nobody ， no one , nothing, nowhere
everybody, everyone, everything, everywhere
一般情况下用于肯定句
一般情况下用于否定句和疑问句
表否定含义
可用于各种句式
But the government is doing _________ useful to protect the environment.
____________ should care for wild animals and plant more trees.
Don’t spit _____________ in public.
something
Everyone
anywhere
Practice 1
none和no one 的区别;
No one 1)不与of连用；
2)谓语动词用单数；
3)只能指人
4)一般用来回答who引起的疑问句。
None 1)可与of连用；
2)谓语动词用单或复数；
3)指人或物；
4)回答how many , how much 引起的问句。
1. of us likes pollution.
2. Who was working in the office last night
---
3 How many birds can you see in the picture
---
None
No one
None
Practice 2
1.I have ____ to tell you.
A. important something
B. something important
B
形容词修饰不定代词和不定副词时，要放在不定代词/不定副词之后
Practice 3
2.Everybody ___ ready for the match.
A. is B. are
A
不定代词作主语时，谓语动词要用单数。
3.Could you give me__ to eat
A something B anything
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。
4.__who breaks the rules will be punished
A somebody B anybody
当要表达“任何人；任何事物”时,anything, anybody, anyone也可以用于肯定句中。
A
B
一.Fill in the blanks
_______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
Check the preview 预习检测
1.______ a result（结果）, a lot of rich land has changed _________ （变为）desert.
2.Trees can stop the wind from ______ the earth _____(吹走）.
3.We shouldn’t leave rubbish ___________(到处).
4.All these problems are very serious,_____(所以) we must do something now.
into
blowing
away
here and there
so
As
Work alone自主学习
1.Read 1a and find out the key points and the difficulties by yourselves.
2.Read 1a and finish 1b .
Group work 小组学习
1.Discuss the difficulties in 1a
2. Discuss 1b
Class work 集体学习
1.even thirstier
2.be covered with
3.be short of/water shortage/
the shortage of
4.avoid doing sth
5.make some progress
6.day by day
7.enough/reuse/fresh/sea/plenty of water
Although the world is hungry, it is____ ____(甚至更渴). While nearly of the earth ___ ____ ____(被……覆盖)water, we —— —— ——（缺乏）drinking water. This is because about 97% of the water on the earth is —— ——（海水）. Humans can only drink and use —— ——（淡水）from rivers, lakes and underground.
How can we avoid a serious——　——（水短缺） we should discover ways to—— ——（重复用水）. Scientists have —— —— ——（取得一些进步）in this field. We still don’t have—— ——（足够多的水）.
There is ___ ___ ___(大量的水)in the sea. we can solve the problem of ＿＿　＿＿　＿＿（．．．的短缺）water.
Fill in the blanks
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.
Give a speech
My dear friends,
Water is very important to us. Let’s do something to save it.
First, __ .Second,___.Third, ___.
Let’s try our best to save water and our planet. Because……
How can we _________(避免) a serious water shortage
People’s need for water is increasing ____________(一天天).
If we want to use the sea water, we must ______ ___(拿走） the salt from the sea water.
While ___________(几乎，差不多) of the earth is covered with water, we are still short of drinking water.
take away
avoid
day by day
nearly
Have a test 课堂检测一
Have a test 课堂检测二（走进中考）
1. —Which would you like to drink, tea or coffee
—________, thanks. I’m not thirsty.
A. Either B. Neither C. Little D. Few
2. My parents are ________ doctors.
A. both B. all C. either D. neither
3. There is ________ with my computer. Can you help me
A. wrong anything B. anything wrong
C. wrong something D. something wrong
4. The wind was blowing strongly. ________ people walked in the street.
A. Little B. A little C. Few D. A few
Have a test 课堂检测三（写作练习）
How to save water(80个字左右)
Remember the useful expressions and key sentences which we learn in this topic.
Preview Section A in Topic 3.