【预习】 仁爱版初中英语 九年级上册 Unit 2 Topic 2 知识汇总
长按二维码关注“仁爱版初中英语”
免费同步辅导，免费海量资源！
往期知识汇总：
| Unit 1 Topic 1 | Unit 1 Topic 2 | Unit 1 Topic 3 |
| Unit 2 Topic 1 |
请点击绿标播放
| sand | [sænd] | n.沙，沙子 |
sandstorm change…into… | (r)m/n,沙漠 转换成，把……变成 | |
| desert | ['dezət] | n.沙漠v.舍弃,遗弃 |
| although | [ɔːl'ðəʊ] | conj.虽然，尽管 |
| reduce | [rɪˈdjuːs] | v.减少；减轻 |
| completely | adv.彻底地；完整地 | |
| user | [ˈjuːzə] | n.使用者；用户 |
| none [nʌn] | pron.没有一个；毫无 | |
| here and there | 在各处；到处 | |
| spit | [spæt] | v.吐，唾 |
| wild | [waɪld] | adj.野的，野生的 |
| untidy | adj.不整洁的,凌乱的 | |
| rude | [ruːd] | adj.无理的，粗鲁的 |
| behavior | [bɪˈheɪvɪə] | n.行为，举止 |
| situation | [sɪtjʊˈeɪʃ(ə)n] | n.状况;形势;局面 |
| punish | [ˈpʌnɪʃ] | v.处罚,惩罚 |
| perhaps | [pə'hæps] | adv.可能,大概 |
| everybody | [ˈevrɪbɒdi] | pron.人人,每个人 |
| take away | 拿走 | |
| oxygen | [ˈɒksɪdʒ(ə)n] | n.氧气 |
| hole | [həʊl] | n.洞,坑 |
| ozone layer | 臭氧层 | |
| radiation | [reɪdɪˈeɪʃ(ə)n] | n.放射，放射物 |
| directly | [dɪ'rektli] | adv.直接地 |
| carbon dioxide | 二氧化碳 | |
| blanket | [ˈblæŋkɪt] | n.毛毯，毯子 |
| escape | [ɪ'skeɪp] | n.&v.逃跑；逃脱 (from) |
| raise | [reɪz] | v.上升，上涨 |
| the greenhouse effect | 温室效应 | |
| refer | [rɪˈfɜː] | 提到，涉及，有关 |
| shortage | n.不足;缺少;短缺 | |
| avoid | [əˈvɒɪd] | v.防止,避免 |
| resource | n.资源,财力 | |
| discover | [dɪs'kʌvə] | v.发现,找到 |
| thirsty | ['θɜːsti] | adj.缺水的,渴的 |
| law | [lɔː] | n.法律，法令；定律 |
p35-1a
p37-1a
p39-1a
Topic2 All these problems are very serious.
【重点短语】
1.as a result 结果
2.change into 变成，转换成
3.stop/prevent sb./sth. (from) doing sth.
keep sb./sth. from doing sth.
阻止某人/某物做某事
4.be in danger of…处于……的危险中
5.die out 灭绝
6.plenty of 大量的
7.come to understand 开始理解
8.worst of all 最糟糕的是
9.make rules 制定规则
10.break the rules违反规则
11.obey/follow the rules 遵守规则
12.in the beginning= at first 期初，在一开始
13.take away 带走，拿走，使消失
14.escape…from… 从……中逃脱
15.cause sb./sth.to do sth. 导致某人/某物做某事
16.refer to 提到，涉及，有关
17.here and there 在各处，到处
18.the greenhouse effect 温室效应
18.be covered with被……覆盖
19.be short of 短缺
20.the shortage of………的短缺
21.avoid doing sth. 避免做某事
【词形转换】
1.complete v.完成,结束
adj.完整的
completely adv.彻底地，完整地
2.use v.使用
n.用途
useful adj.有用的
user n.使用者
reuse v.再次使用，重新使用
3.behavior n.[U]行为，举止
behave v.行为，举止
4.discover v.发现，找到
discovery n.[U]发现; [C]被发现的事物
5.sand n.沙子
sandy adj.沙的
【重点句型】
1.What bad weather!
多么糟糕天气！
2.None of us likes pollution.
没有一个人喜欢污染。
3.Don’t spit anywhere in public.
不要在公共场合随地吐痰。
4.Everyone should care for wild animals and plant more trees.
每个人都应该保护野生动物植更多的树。
5.We should do everything we can to protect the environment.
我们应该做我们应该做的一切事情来保护环境。
6.As a result, a lot of rich land has changed into desert.
结果，许多肥沃陆地已经变成沙漠。
7.Tress can stop the wind from blowing the earth away.
树可以防风固土。
8.We shouldn’t leave rubbish everywhere.
我们不应该到处丢垃圾。
9.All these problems are very serious, so we must do something now.
所有问题都非常严重，因此我们现在必须要做一些事情。
10.What’s it about?
它是关于什么的？
【重点语法】
不定代词
1. 定义: 指的是那些不指明代替任何特定名词或形容词的代词。
2. 用法: 在句中可作主语、宾语、表语、定语等。something , somebody, anything, anybody等作主语时，通常视为单数。当形容词修饰它们时，要放在其后。
e.g. But the government has done something useful to protect the environment.
【话题写作】
提示: 我的家乡位于山脚下，一条小河从旁边流过。两年前，南面建起一座化工厂，排出大量废气、废水，造成严重污染，影响人们健康。如今政府采取了一系列保护环境、防止污染的措施。我的家乡正变得越来越美。
要求: 1.文章必须包括以上主要内容，可以适当增加细节，使内容连贯；
2.80词左右。
范文：
My hometown lies at the foot of a small hill. A small river passes by. There was a chemical factory to the south of my hometown two years ago. It sent out a great deal of waste gas into the air and poured lots of waste water into the river. The terrible pollution was harmful to us as well as to the environment.
Nowadays, the government has done something to protect the environment and prevent it from being polluted. Now, my hometown is becoming more and more beautiful.
Unit 2 Topic 2 All these problems are very serious.
所有这些问题都非常严重
Section A
(Kangkang, Maria and Jane are talking in a room. The wind outside is blowing strongly.)(康康、玛利亚和简正在房间里谈话，,外面的风刮得很厉害。)
What bad weather! The wind is so strong! And the sand really hurt my face. while I was walking down the street just now, I couldn't see anything.
多么糟糕的天气!风太大了！沙子的确刮得脸很疼。刚才在街上走时，我什么也看不见。
I'm sorry to hear that. But what causes these sandstorms? 对此我很难过。但是是什么引起这些沙尘暴的呢?
People have cut down too many trees. As a result, a lot of rich land has changed into desert.
人们乱砍滥伐。结果，大量肥沃的土地变成了荒漠。
That's bad. How can that affect the weather? 那太糟糕了,但是那怎么影响天气呢?
Trees can stop the wind from blowing the earth away. 树木可以防风固土。
And a lot of water can be saved by forests. 并且森林可以贮存大量的水分。
They can also stop the water from washing the earth away. 树木也能防止水土流失。
Cutting down trees is harmful to human beings, animals and plants. Although we have built "the Green Great Wall", we still need to do something to protect the environment.
砍伐树木对人类、动植物都有害。尽管我们已经建起了“绿色长城”,我们仍需要采取措施保护环境。
Section B
Kangkang, read this article. 康康，读这篇文章。
What’s it about? 关于什么的？
It’s about air pollution in China. It says that China has become the world’s largest producer and user of coal. As a result, air pollution has become a serious problem.
关于中国的空气污染问题。它提到中国已成为世界上最大的煤炭生产国和消费国。结果，空气污染成已成为一个严重的问题。
Yeah. But the government is doing something useful to protect the environment.
是的，但是政府为了保护环境正在采取有效的措施。
That’s great. None of us likes pollution. 那样很好。没有人喜欢污染。
Yes, We shouldn’t leave rubbish here and there. Don’t spit anywhere in public. Don’t walk on grass or pick flowers. Everyone should care for wild animals and plant more trees.
我们不应该到处丢弃垃圾。不要在公共场合随地吐痰。不要践踏草坪或采摘花朵。每个人都应当保护野生动物并且多种一些树木。
That’s right. We should do everything we can to protect the environment. 对。我们应尽一切努力保护环境。
Section C
The earth is 4.6 billion years old. We humans have lived on the earth for only 35 000 years, but during this period, we have changed our planet a lot in many ways. Some things we have done are very good for the earth while others are bad.
All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so many kinds of animals and plants are disappearing.
In big cities, cars and buses have polluted the air. Now many people in cities have health problems.
Factories have also polluted the land and the water. As a result, many rivers and lakes are now dead.
Around the earth, there’s a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous because this kind of radiation can cause cancer.
Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal and wood. This has formed a “blanket” around the earth. The heat from the sun can’t escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change.
All these problems are very serious, so we must do something now.
地球已有46亿年了。我们人类生活在地球上只有三万五千年，但是在此期间我们在许多方面改变了我们的星球。我们所做的一些事情对地球有益，然而其他一些对地球却有负面影响。
全世界的人们已经砍掉了数百万的树木。下雨或吹风时，土壤被带走，森林变成了荒漠，因此许多种类的动植物正在灭绝。
在大城市，小车和公交车污染了空气，现在城市里许多人都有健康问题。
工厂也污染了土地和水。结果，现在许多河流和湖泊失去了生机。
地球周围有一种特殊的氧气叫做“臭氧” (O3)，它对地球很重要。但现在空气污染正在破坏它，而且使臭氧层出现了一个非常大的洞。大量来自太阳的有害射线穿过这个洞直接进入地球大气层。这是非常危险的，因为这种射线能导致癌症。
空气中的二氧化碳(CO2)大量增多。二氧化碳主要来自燃烧的油、煤和木柴。它在地球周围形成毯子式的覆盖层。来自太阳的热量不能散发，所以气温度升高。这就是所谓的“温室效应”。它会引起海平面升高而且地球上的气候也会有变化。
所有这些问题都非常严重，所以我们现在必须做些事情（来保护我们的家园）。
Section D
Indefinite Pronoun and Adverb不定代词和副词
1. None of us likes pollution.没有人喜欢污染。
2. Don’t spit anywhere in public. 不要在公共场合随地吐痰。
3. Everyone should care for wild animals and plant more trees. 每个人都应当保护野生动物并且多种一些树木。
4. We should do everything we can to protect the environment. 我们应尽一切努力保护环境。
Functions功能
1.As a result, a lot of rich land has changed into desert.结果，大量肥沃的土地变成了荒漠。
2.Trees can stop the wind from blowing the earth away. 树木可以防风固土。
3.We shouldn’t leave rubbish here and there.我们不应该到处丢弃垃圾。
4.All these problems are very serious, so we must do something now.
所有这些问题都非常严重，所以我们现在必须有所行动。
-END-
免责申明：文章音频、视频来源于网络，仅供学习者免费使用，版权归原作者所有，如有侵权请联系删除！
你若喜欢，点个在看