资源简介

(共33张PPT)
Lesson 2 Look at
the plastic!自主学习
Unit 8 Protecting the environment
1 Think and talk about the questions with your partner.
A What plastic products do you see in your daily life
In my daily life, I see a variety of plastic products. For instance, plastic bags are commonly used for shopping, and plastic bottles are everywhere for holding water or other drinks.
B What can we do to avoid using too many plastic products
To avoid using too many plastic products, we can use reusable alternatives such as cloth bags for shopping, glass or stainless steel water bottles instead of plastic ones.（答案不唯一）
2 Read the passage and write true (T) or false (F).
In today’s world, plastic pollution is a global problem. Humans produce millions of tons of plastic every year. About half is for packaging goods. We use many plastic products only once or twice before they become waste.
Plastic pollution affects the natural beauty of the environment. Even worse, millions of animals are killed by plastic every year.
Plastic will stay in the ground for years and pollute the soil, water, and plants. If our environment suffers, humans will do too.
Why can’t we just stop using plastic Think about drinking bottles and plastic bags. They are indeed easy to carry and cheap to buy. But they are not the only option! Bring your own shopping bag instead of using a plastic one. Carry a reusable water bottle. Choose products with less packaging. Learn to recycle plastic properly.
Let’s be part of the solution. Small changes in our daily habits will have a big impact on reducing plastic waste.
长难句分析：这是一个简单句。主语是Small changes in our daily habits，其中in our daily habits是介词短语作后置定语，修饰Small changes，说明变化的方面；谓语是will have；宾语是a big impact，on reducing plastic waste 是介词短语作后置定语，修饰impact，说明影响的具体领域。
A Plastic waste can stay in the ground for years. （ ）
B We can’t use fewer plastic products because they provide convenience. （ ）
C This passage draws attention to plastic pollution. （ ）
T
F
T
3 Read the passage again and complete the table.
produce
half
kills
pollutes
suffers
own
reusable
products
plastic
从教材习题3 中学中考解题策略
段落定位法
明确图表每个部分对应原文的段落，先锁定对应段落再找答案。例如，Paragraph 1的答案一定在第一段，在第一段中我们可以找到“Humans produce millions of tons of plastic every year. About half is for packaging goods.”，从而确定这两个空分别填produce 和half。
4 Work in pairs. Discuss the following questions with your partner.
A How do you sort the waste
·vegetable leaves ·fruit peels ·waste paper
·medicine ·plastic bottles ·used batteries
·light tubes ·paint pots
B Do you think it is important to sort waste Why or why not
C What can we do to reduce the amount of waste
探究一 核心单词
Unit 8 Protecting the environment
1 produce /pr 'dju s/ v. 生产；制造（教材P102）
观察· The bakery produces fresh bread every morning.
这家面包店每天早上都会制作新鲜面包。
· The artisan produces beautiful pottery by hand.
这位手工艺人手工制作精美的陶器。
· Our cat produced kittens last week.
我们的猫上周生小猫咪了。
· She produced a TV series about adopted children.
她拍了一部关于被收养的儿童的电视系列片。
· They put a new product on the market.
他们向市场推出了一款新产品。
produce 作动词, 意为“产生；生产；生育；制作（戏剧、电影）”, 后接名词或代词作宾语。
product，意为“产品；制品；产物”。
2 ton /t n/ n. 吨；大量；许多（教材P102）
观察· The truck can carry up to 10 tons of cargo.
这辆卡车最多能载10 吨货物。
· An elephant weighs about several tons. 一头大象重达几吨。
· I have tons of work to do before the deadline.
在截止日期之前，我有很多工作要做。
· Trucks can carry many tons of goods.
卡车可以运载很多吨货物。
ton 作可数名词，意为“吨”。
tons of 意为“大量，许多”，后接不可数名词或可数名词复数，相当于a lot of 或lots of。
3 waste /we st/ n. 垃圾；浪费 v. 浪费（教材P102）
观察· We should avoid waste and make full use of resources.
我们应该避免浪费，充分利用资源。
· All his efforts went to waste. 他所有的努力都白费了。
· I don’t think we need to waste much time on this.
我认为我们不需要在这件事上浪费太多时间。
· We wasted a whole afternoon (in) trying to repair the car. 我们浪费了一整个下午尽力修那辆车。
waste 的一词多义：
（1）作不可数名词时，意为“垃圾；浪费”。常见短语：go to waste 浪费；白费。
（2）作及物动词，意为“浪费；滥用”。常见搭配：waste sth. on sb./sth. 在某人/ 某事上浪费某物；waste sth. (in) doing sth. 浪费某物做某事。
4 pollute /p 'lu t/ v. 污染；弄脏（教材P102）
观察· Plastic bags can pollute the soil when not properly disposed of. 如果不妥善处理，塑料袋会污染土壤。
· Careless disposal of trash can pollute our parks and streets. 随意丢弃垃圾会污染我们的公园和街道。
· Air pollution is a serious problem in many cities.
空气污染在很多城市是一个严重问题。
· The factory is a major polluter of the local river.
这家工厂是当地河流的主要污染源。
pollute 作及物动词，意为“污染; 弄脏”。
相关词形：（1）pollution n. 污染；污染物
（2）polluter n. 污染者；污染源
5 suffer /'s f (r)/ v. 遭受；蒙受；受苦（教材P102）
观察· I can’t suffer this noise any longer.
我再也无法忍受这种噪音了。
· Many people suffer from allergies during spring.
许多人在春天患有过敏。
· She had to suffer for her mistakes and learn from them.
她必须为自己的错误受苦，并从中吸取教训。
· They suffered through the long winter without enough food. 他们在没有足够食物的情况下熬过漫长的冬天。
· This war has caused widespread human suffering.
这场战争给许许多多的人带来了苦难。
suffer 既可作及物动词，也可作不及物动词。常用搭配：
（1）suffer from 表示“遭受或患有某种疾病、疼痛或不适”
（2）suffer for 表示“因某原因而受苦”
（3） suffer through 表示“痛苦地度过、忍受或经历某事或 某个时期”
相关词形：suffering n.（身体或精神上的）疼痛；痛苦
6 cheap /t i p/ adj. 便宜的（教材P102）
观察· The pencil is very cheap. I can buy it with my pocket money. 这支铅笔很便宜。我可以用我的零花钱买它。
· I wanted a toy car, but it was too expensive.
我想要一辆玩具车，但它太贵了。
· I saw a beautiful but dear necklace in the jewelry store.
我在珠宝店看到了一条漂亮但昂贵的项链。
· The price of gold is currently very high. 黄金的价格目前非常高。
cheap 作形容词，意为“便宜的”。其反义词为expensive 和dear，意为“昂贵的”。
形容某物价格高低要用high/low，不能用cheap/expensive。high/low 更直接地描述了价格水平的高低，而cheap/ expensive 则更多的是从消费者的主观感受出发，描述物品是否便宜或昂贵。
探究二 核心短语
Unit 8 Protecting the environment
1 millions of 数百万的（教材P102）
观察· Every year, millions of tourists visit the Great Wall of China. 每年都有数百万的游客参观中国的长城。
· In the ocean, there are millions of fish swimming around.
海洋里有数以百万计的鱼在游来游去。
· There are over a million books in the library.
图书馆里有超过一百万册书籍。
· There are thousands of people there. 那里有成千上万的人。
millions of 意为“数百万的”，用于泛指一个非常大的数量，后面通常接名词复数或不可数名词。million 表示“百万”，是一个具体的数量级，可以与具体的数字连用表示具体的数量。
thousands of 数以千计的；成千上万的
2 have a big impact on 对……有很大影响（教材P102）
观察· Studying hard has a big impact on my grades.
努力学习对我的成绩有很大影响。
· Good sleep habits have a positive impact on our learning.
良好的睡眠习惯对我们的学习有积极的影响。
· Volunteering has had a profound impact on my sense of community.
做志愿者活动对我的社区意识产生了深远的影响。
· Learning to play an instrument makes a big impact on my ability to focus. 学习演奏乐器对我的专注力有很大影响。
have a big impact on 意为“对……有很大影响”。
相关表达：（1）have a p ositive/negative impact on 对……产生积极/ 消极的影响
（2）have a profound impact on 对……产生深远的影响
（3）make a big impact on 对……有很大影响
探究三 核心句式
Unit 8 Protecting the environment
We use many plastic products only once or twice before they become waste. 许多塑料制品在成为废物之前，我们只使用过一两次。（教材P102）
分析结构 这是一个含有before 引导的时间状语从句的复合句。We use many plastic products only once or twice 是主句：We 是主语；use 是谓语；many plastic products 是宾语；only once or twice 是状语。before they become waste 是时间状语从句：they 是从句主语；become 是从句谓语；waste 是从句宾语。
· We should leave immediately before it starts raining.
我们应该在下雨前立刻离开。
· She will sing a song after she finishes her meal.
她吃完饭后会唱一首歌。
· She will call me when she gets home. 她到家后会给我打电话。
· They will start the game as soon as everyone arrives.
大家一到齐，他们就会开始这场游戏。
· I will not watch TV until I finish my chores.
我做完家务后才会看电视。
“主语+ 谓语+ 宾语+ 时间状语从句”表示主语在某个特定时间条件下进行的动作，以及该动作涉及的对象。
时间状语从句常见的引导词有：when 当……时候；while当……时候；as 可与when 和while 互换，强调主句动作和从句动作同时发生；before 在……之前；after 在……之后；since 自从……以来；until/till 直到……；as soon as 一……就……等。

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