资源简介

(共35张PPT)
Lesson 1 Let’s clean
it up!自主学习
Unit 8 Protecting the environment
1 Read the questions and give your answers.
A How often do you clean your house
B How does plastic pollution affect sea life
I clean my house once a week. Sometimes, I clean it more often if it gets dirty quickly.
Plastic pollution is very harmful to sea life. Many animals, like turtles and fish, mistake plastic for food and eat it. This can make them sick or even cause death.（答案不唯一）
2 Listen to the conversation and answer the questions.
Jenny, Danny, and Brian are on a beach vacation with their families. They’re excited to go for a swim in the ocean.
Jenny: Ouch! I stepped on something and it hurts!
Danny: Is it a shark
Jenny: You’re kidding me. It’s just some plastic. Look, it’s a plastic bottle.
Danny: Plastic It should be in the bin, not in the sea.
Brian: I’ll go throw this bottle in the recycling bin.
Danny: Look! That man over there is leaving his garbage on the beach. Such behaviour is harmful to the ocean and its creatures.
such + 名词，表示“这样的……”，
用来指代或强调某种特定的事物或行为。
Jenny: Exactly! Last week, I read that a whale died with more than 20 plastic bags, a toy gun, and other rubbish in its stomach.
Danny: That’s such a terrible story. If we do nothing, the situation will get worse.
长难句分析：这是一个含有条件状语从句的复合句。主句主语是the situation，主句谓语是will get，get 作系动词，意为“变得”，worse 是形容词比较级，作表语。If we do
nothing 是条件状语从句。这句话遵循“主将从现”原则。
Brian: How about cleaning up the beach
思考1：这句话的同义表达有哪些？
What about cleaning up the beach /
Shall we clean up the beach （答案不唯一）
Danny: Sounds good. But it would take too long. There are only three of us!
Jenny: We can ask our family members to help.
Brian: Good idea!
思考2：别人提出一个建议或想法时，你可以用“Good idea!”来表示你觉得这个想法很好，并支持它。你还知道其他类似的表达吗？
Great idea! / That’s a good idea! / Sounds good! （答案不唯一）
They explain the plan to their family members, and everyone agrees to help. They spend the rest of the afternoon picking up bottles, plastic bags, and all kinds of garbage on the beach. Before leaving, they take a final swim. They feel proud that they made a difference at the beach.
引导宾语从句
A Who is having a vacation on the beach
B Who finds the plastic in the ocean
Jenny, Danny, and Brian are having a vacation on the beach with their families.
Jenny finds the plastic in the ocean.
C What is Brian’s idea about the garbage on the beach
D How do they feel after cleaning up the beach
Brian’s idea about the garbage on the beach is to clean it up.
They feel proud after cleaning up the beach. They spent the rest of the afternoon picking up garbage and felt that they made a difference.
3 Listen to the conversation again and fill in the blanks.
Jenny, Danny, and Brian were on a beach vacation with their families. Jenny stepped on a ______________. Danny saw a man leaving his garbage on the beach. They thought the situation would ___________ if people did not take action to protect the beach. So they decided to ___________ the beach. They asked their family members to help. They spent the afternoon ___________ all kinds of garbage on the beach. They ________ that they made a difference in keeping the beach clean and protecting the ocean and its creatures.
plastic bottle
get worse
clean up
picking up
felt proud
4 Listen to the dialogue and write true (T) or false (F).
Danny is talking with Jenny and Brian.
A It’s a beautiful day today. （ ）
B They are studying geography in class this week. （ ）
C They will ask their classmates to help. （ ）
D They are going to pick up the garbage on the street.
（ ）
5 What can people do to protect the environment Talk with your partner.
A: What do you usually do to protect the environment
B: When I see garbage on the street, I pick it up and
throw it in the garbage bin. How about you
A: I save water by taking shorter showers.
探究一 核心单词
Unit 8 Protecting the environment
1 plastic /'pl st k/ n. 塑料adj. 塑料的；可塑的
观察· The toy car is made of plastic.
这个玩具小汽车是用塑料做的。
· She used plastic clay to make a model of a house.
她用塑性粘土做了一个房子的模型。
· The plastic wrap keeps the food fresh.
塑料保鲜膜可以让食物保持新鲜。
· The chemical process plasticized the material, making it more flexible. 这种化学过程使材料塑料化，使其更柔韧。
plastic 的一词多义：（1）作不可数名词，意为“塑料”；作可数名词时，意为“塑料制品”；（2）作形容词，意为“塑料的；可塑的”。
常见搭配：plastic wrap 塑料保鲜膜；plastic bag 塑料袋；
plastic cup 塑料杯子。
动词形式为plasticize，意为“使塑化”。
2 recycle /ri 'sa kl/ v. 回收利用；再利用（教材P100）
观察· Our city has a program to recycle electronic waste.
我们的城市有一个回收电子垃圾的项目。
· Recycling is an important way to reduce waste and protect the environment. 回收是减少浪费和保护环境的重要途径。
· Plastic bottles are recyclable and should be put in the recycling bin. 塑料瓶是可回收的，应该放进回收垃圾桶里。
recycle 作动词，意为“回收利用；再利用”。
相关词形：（1）recyclable adj.，意为“可回收利用的”；
（2）recycling n.，意为“回收利用；回收利用物”。
常见搭配：recycling center 回收中心；recycling program 回收利用计划；recycling process 回收过程；recycling rate 回收率。
3 behaviour /b 'he vj (r)/ n. 行为，举止（教材P100）
观察· His behaviour in class is very active.
他在课堂上的表现非常积极。
· The teacher praised him for his good behaviour.
老师因为他的良好表现表扬了他。
· He always behaves himself in public.
他在公共场合总是举止得体。
behaviour 作不可数名词，意为“行为, 举止”, 其常用搭配有：good/bad behaviour 好的/ 不好的行为。
其动词形式为behave，意为“表现, 举止”, 其常用搭配有：
behave oneself 举止有礼貌，表现得体。
4 harmful /'hɑ mfl/adj. 有害的（教材P100）
观察· Not sleeping enough can be harmful to your health.
睡眠不足对你的健康有害。
· Pollution can harm marine life. 污染会危害海洋生物。
· Too much smoking is harmful to his health.=Too much smoking does harm to his health.=Too much smoking is not good for his health. 吸烟过多对他的健康有害。
· This experiment was harmless to the animals.
这个实验对动物无害。
harmful 为形容词，意为“有害的”；名词和动词形式均为harm，意为“伤害；损害”；反义词为harmless，意为“无害的”。
be harmful to = do harm to = b e bad for，意为“对……有害处”。
5 worse /w s/ adj. 更糟的；更坏的（bad 的比较级）
观察· My cold is worse today. 我的感冒今天更严重了。
· The weather is worse today than yesterday.
今天的天气比昨天更糟糕。
· I feel worse when I don’t sleep well.
我睡不好觉的时候感觉更糟。
· It’s raining worse than ever. 雨下得比以往都大。
· Her illness is getting worse and worse.
她的病情越来越严重。
worse 的用法总结：
（1）adj“. 更糟的；更坏的；更差的；更严重的；（病情）更重的”，是形容词bad（坏的）和ill（病的）的比较级形式。
（2） adv.“更糟；更坏；更严重”，是副词badly（差）的比较级。
常见短语：get worse 变糟糕；worse and worse 越来越坏；每况愈下。
探究二 核心短语
Unit 8 Protecting the environment
1 agree to do 同意做……（教材P100）
观察· The kids agreed to clean their rooms before going out to play. 孩子们同意出去玩之前打扫房间。
· She hopes to become a doctor. 她希望成为一名医生。
· They plan to travel around the world.他们计划环游世界。
· Let’s begin to work on the project.
让我们开始做这个项目吧。
· Remember to call me when you get there.
你到那里后记得给我打电话。
· We agreed on going to the movies this weekend.
我们同意这个周末去看电影。
· We hope that you will agree to this plan.
我们希望你会赞同这个计划。
· I agree with you that we should start studying earlier.
我同意你的看法，我们应该早点开始学习。
agree to do 意为“同意做……”，动词不定式作agree 的宾语。
动词不定式作宾语的动词还有：want、hope、wish、decide、choose、plan、need、promise、refuse 等。
agree 的常见短语：（1）agree on 对……达成一致
（2）agree to 赞同；赞成
（3）agree with 同意；赞同
2 the rest of 剩余的（教材P100）
观察· The rest of the students are waiting in the room.
其余的学生正在房间里等待。
· The rest of the bread was bad. 剩余的面包坏了。
· The rest of his life was very happy. 他的余生很幸福。
· I ate one apple, and I saved the rest for my brother.
我吃了一个苹果，剩下的留给了我的哥哥。
· The rest are from every part of the world.
其余的人来自世界各地。
· I ate half of the pizza, and the rest is still on the table.
我吃了一半的比萨饼，剩下的还在桌子上。
the rest of+ 名词 意为“剩余的……”。其中介词“of”后跟的名词为可数名词复数时，谓语动词用复数；介词“of”后跟的名词为可数名词单数/ 不可数名词时，谓语动词用单数。
the rest 表示“剩余部分，其余的人/ 物”，作主语时，如果指代的是可数名词复数，则谓语动词用复数形式；如果指代的是不可数名词，则谓语动词用单数形式。
探究三 核心句式
Unit 8 Protecting the environment
1 How often do you clean your house 你多久打扫一次房子？（教材P100）
分析结构 这是一个特殊疑问句，用于询问某件事情发生的频率。疑问短语How often 用于询问频率，即某件事情多久发生一次。助动词do 帮助构成疑问句主语是you，谓语是clean。your house 是动词clean 的宾语，表示打扫的对象。
· —How often do you brush your teeth 你多久刷一次牙？
—Twice a day. 一天两次。
· How often do you watch TV 你多久看一次电视？
· Where do you want to go on vacation 你想去哪里度假？
· Which sport do you like to play the most 你最喜欢玩哪项运动？
“特殊疑问词+ 助动词do/does+ 主语+ 谓语动词原形+ 其他？”是特殊疑问句常见的句式结构，回答特殊疑问句要根据事实直接回答。
2 If we do nothing, the situation will get worse.
如果我们什么都不做，情况会变得更糟。（教材P100）
分析结构 这是一个主从复合句。主句是the situation will get worse，其中the situation 作主语；will get 作谓语；worse 作表语。从句是由If 引导的条件状语从句，we 作主语；do 作谓语；nothing 作宾语。
· If you study hard, you will get good grades.
如果你努力学习，你就会取得好成绩。
· If it rains, we will stay at home.
如果下雨，我们就会待在家里。
“If + 从句，+ 主句.”表示“如果……，……就会……”。注意：在if 引导的条件状语从句中，从句用一般现在时，主句用一般将来时，即遵循“主将从现”原则。

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