Unit 2 Saving the earth.Topic 2 All these problems are very serious.单词精讲精练课件(共24张PPT)

(共24张PPT)
Unit 2 Topic 2
Section A
1. sand u.n. 沙
sandstorm cn. 沙尘暴
The _____________(sand) really hurt my face.
What ____________(cause) these _________(sandstorm)
snowstorm
rainstorm
暴风雪
暴风雨
2. _______________=_________________转化成，变成
People have cut down too many trees. As a result, a lot of rich land has ___________(change) into desert.
sand
causes
sandstorms
change into
turn into
changed
4. 人类的表达方法：human = human being = man = mankind
Cutting down trees is harmful to _____________(人类), animals and plants.
3. desert n. 沙漠 v. 舍弃，遗弃
The mother deserted her children.
A lot of rich land has changed into desert.
human being
6. We must do something to _____________(减少) the air pollution.
5. although = though 虽然，尽管，即使 都引导让步状语从句
_____________ we have built “The Green Great Wall”,we still need to do something to protect the environment.
Although/ Though
reduce
7. complete v. 完成，结束，填写
adj. 完整的，彻底的
—______________adv. 完全地，完整地，彻底地
When will the work be _______________
He’s a ___________ stranger to me.
He lost the game _____________.
completely
completed
complete
completely
Unit 2 Topic 2
Section B
1. use v. 使用 --- ___________ n. 使用者---____________ adj. 有用的---_____________ adj. 无用的
It says that China has become the world’s largest producer and ____________ of coal.
2. none of + 可数名词复数/代词
+ 不可数名词
谓语动词可单可复
谓语动词必须单数
None of us _______________________(speak) English.
None of the books _________________(be) mine.
None of the money _______________(be) mine.
There is none left.
user
useful
useless
user
speak/speaks
is/ are
is
3. We shouldn’t leave _____________(垃圾) here and there.
4. ____________________到处
5. _________________________.不要在公众场合随地吐痰。
rubbish
here and there
Don’t spit in public.
6. _____________________野生动物
7. He thinks himself somebody, but in fact, he is nobody.
8. Nobody likes to be _____________(tidy).
9. ___________________最糟糕的是
wild animals
untidy
Worst of all
10. ______________________ 粗鲁的行为
11. I think we should make rules to change the _________(情况).
You will be ______________(惩罚). (注意被动)
12. punish v. --_______________ n.惩罚，处罚，刑罚
rude behaviors
situation
punishment
punished
13. _____________(可能) it will be hard for us to obey the rules in the beginning.
Perhaps
Unit 2 Topic 2
Section C
1. take away____________
take off ______________
take up ____________
take out_______________
Please _________________ your toys. What a mess!
The plane will ______________ in 5 minutes.
He _______________ a new hobby.
____________ your English book and write down the answer.
When it rains or when the wind blows, the earth is __________. (注意语态)
拿走
起飞，脱下
占据，开始从事
拿出
take away
take off
takes up
Take out
taken away
2. There is a special kind of oxygen called “ozone”.
3. ____________________ 一个非常大的洞
4. ___________________臭氧层
a very big hole
ozone layer
5. Too much harmful _______________(放射物) from the sun pass through the hole and reaches the earth directly.
6. direct adj. 直接的 --- ____________ n. 导演---_____________ adv. 直接地--- ____________n. 方向，指导--_________________(反义词) 间接地
People run in all ________________.
You can point out his mistakes ____________. He is easy-going.
7. _________________________(二氧化碳) comes from burning oil, coal and wood.
radiation
director
directly
direction
indirectly
directions
directly
Carbon dioxide
8. form v. 使形成 n. 种类，表格
A plan formed in my mind.
I’ll send you the form to fill in and the date when you may start.

9. This has formed a _________________(毯子) around the earth.
blanket
10. __________________从...中逃出
It’s difficult for us to escape ____________ the prison.
11. rise v. 上升，起床，升起--___________(过去式) --__________(过去分词)
Early to bed and early to rise makes a man healthy, wealthy and wise.(2019D)
The price of vegetables rises so quickly these days

escape from
from
rose
risen
the greenhouse effect
12. ____________________温室效应
Unit 2 Topic 2
Section D
1. __________ n. 短缺---___________adj. 短的
_______________________ 水资源短缺
be short of ...的短缺
How can we avoid a serious water _______________
We are still _____________ of drinking water.
2. _________________ 避免做某事
他试图避而不答我的问题。 He tried to avoid my question.
the shortage of water
shortage
short
avoid doing
answering
shortage
short
3. _________________水资源
4. discover v. --_______________ n.发现
discovery
5. Although the world is hungry, it is even __________(thirst).
water recources
thirsty
6. While __________(near) 3/4 of the earth is covered with water, we are still short of drinking water.
7. ________________________________________. 制定法律反对水污染。
nearly
pass laws against water pollution
The earth is our home. We must try our best to protect our environment. As a student, what should we do First, we ought to shut off the electricity when we leave a room. Second, we’d better walk or ride a bike instead of taking a bus or a taxi if we travel a short distance. Third, we should use both sides of paper and take a cloth bag when we go shopping. Don’t use plastic bags. We have only one earth. We should do everything we can to protect it, or we will be punished and lose our home.
How to protect the environment
地球是我们的家。我们必须尽力保护我们的环境。作为一个学生，我们应该做什么？
首先，我们在离开房间时应该关掉电源。其次，如果我们走了很短的距离，我们最好是步行或骑自行车，而不是乘公共汽车或乘出租车。第三，购物时要用纸两面，带布袋。不要使用塑料袋。
我们只有一个地球。我们应该尽一切努力去保护它，否则我们就会受到惩罚，失去我们的家园。
Unit 2 Topic 2 单词Section A1.沙2.沙暴3.转换成，变成4.沙漠，舍弃，遗弃5.人6.彻底地，完整地7.减少，减轻8.虽然，尽管，即使
Section B1.使用者，用户2.没有一个，毫无3.垃圾，废弃物4.在各处，到处（词组）5.无处，哪里都不6.人人，每个人7.大概，可能8.处罚，惩罚9.状况，形式，局面10.行为，举止
11.无理的，粗鲁的12.最差的，最糟的13.不整洁的，凌乱的14.没有人，小人物，无足轻重的人15.野生的，野的16.吐Section C1.拿走（词组）2.洞，坑3.直接地4.提到，涉及，有关5.温室效应6.上升，起床，升起7.渗出，逃跑，逃脱8.毛毯，毯子9.出现，形成，种类，形式
Section D1.不足，缺少，短缺2.防止，避免3.资源，财力4.发现。找到5.再次使用，重复利用6.缺水的，口渴的7.几乎，将近8.法律，法令，定律
Unit 2 Topic 2 单词
Section A
1.沙
2.沙暴
3.转换成，变成
4.沙漠，舍弃，遗弃
5.人
6.彻底地，完整地
7.减少，减轻
8.虽然，尽管，即使
Section B
1.使用者，用户
2.没有一个，毫无
3.垃圾，废弃物
4.在各处，到处（词组）
5.无处，哪里都不
6.人人，每个人
7.大概，可能
8.处罚，惩罚
9.状况，形式，局面
10.行为，举止
11.无理的，粗鲁的
12.最差的，最糟的
13.不整洁的，凌乱的
14.没有人，小人物，无足轻重的人
15.野生的，野的
16.吐
Section C
1.拿走（词组）
2.氧气
3.洞，坑
4.臭氧层
5.放射，放射物
6.直接地
7.二氧化碳
8.提到，涉及，有关
9.温室效应
10.上升，起床，升起
11.渗出，逃跑，逃脱
12.毛毯，毯子
13.出现，形成，种类，形式
Section D
1.不足，缺少，短缺
2.防止，避免
3.资源，财力
4.发现。找到
5.再次使用，重复利用
6.缺水的，口渴的
7.几乎，将近
8.法律，法令，定律