仁爱版七年级下册英语
Unit 8 Our Blue Planet Preparing for the Topic 知识点总结
一、重点单词
1. 自然元素类
ocean(海洋)、forest(森林)、mountain(山)、river(河流)、air(空气)、land(陆地)、sky(天空)、earth(地球)、sun(太阳)、rain(雨)
2. 环保行动类
protect(保护)、save(节约)、recycle(回收)、reduce(减少)、reuse(重复使用)、clean(清洁)、plant(种植)、pollute(污染)、waste(浪费)、damage(破坏)
3. 污染与问题类
pollution(污染)、plastic(塑料)、trash(垃圾)、smoke(烟雾)、chemical(化学品)、climate(气候)、energy(能源)、resource(资源)、habitat(栖息地)、species(物种)
4. 其他相关类
environment(环境)、healthy(健康的)、dangerous(危险的)、important(重要的)、necessary(必要的)、future(未来)、problem(问题)、solution(解决方案)、action(行动)、responsibility(责任)
二、重点短语
1. 环保行动短语
protect the environment(保护环境)、save energy(节约能源)、reduce waste(减少浪费)、recycle materials(回收材料)、plant trees(种树)、clean up the beach(清理海滩)、turn off the lights(关灯)、use public transport(使用公共交通)
2. 污染问题短语
air pollution(空气污染)、water pollution(水污染)、plastic waste(塑料垃圾)、climate change(气候变化)、throw trash(扔垃圾)、harmful to health(有害健康)、cut down forests(砍伐森林)
3. 其他短语
take action(采取行动)、in danger(处于危险中)、make a difference(产生影响)、for the future(为了未来)、care about(关心)、work together(共同努力)
三、重点句型
1. 描述环境问题
1)The air is polluted because of too many cars.(空气被污染是因为汽车太多。)
2)Plastic waste is harmful to ocean animals.(塑料垃圾对海洋动物有害。)
3)Many animals are losing their habitats.(许多动物正在失去它们的栖息地。)
2. 提出建议
1)We should recycle paper and bottles.(我们应该回收纸张和瓶子。)
2)You must turn off the lights when you leave the room.(离开房间时必须关灯。)
3)Let’s plant more trees to protect the earth.(让我们种更多的树来保护地球。)
3. 表达责任
1)It’s everyone’s duty to save water.(节约用水是每个人的责任。)
2)We need to take action to reduce pollution.(我们需要采取行动减少污染。)
3)What can we do to help the environment (我们能做些什么来帮助环境?)
四、重点语法
情态动词 should 和 must 的用法
1. should 表示建议或义务,语气较弱:
We should use cloth bags instead of plastic ones.(我们应该使用布袋而不是塑料袋。)
You shouldn’t throw trash on the ground.(你不应该在地上扔垃圾。)
2. must 表示强制性的责任或必要性,语气强烈:
We must protect endangered animals.(我们必须保护濒危动物。)
You must not waste water.(你绝不能浪费水。)
五、练习题
(一)单词拼写
1. We need to p______________ the ocean by not throwing trash into it.
2. Cutting down too many trees causes climate c______________.
3. Please r______________ plastic bottles instead of throwing them away.
4. Air p______________ makes it hard to breathe in some cities.
5. The polar bear’s h______________ is disappearing because of global warming.
(二)短语翻译
1. 保护环境 ______________
2. 节约能源 ______________
3. 减少浪费 ______________
4. 塑料垃圾 ______________
5. 采取行动 ______________
(三)句型转换
1. We should recycle paper.(改为否定句)
We ______________ recycle paper.
2. It is important to save water.(改为同义句)
______________ important to save water.
3.Planting trees helps the environment.(对划线部分提问)
______________ helps the environment
(四)用所给动词的适当形式填空
1. We ______________ (plant) 100 trees last month.
2. She ______________ (must) turn off the TV when she leaves.
3. They ______________ (clean) up the park tomorrow.
4. I ______________ (should) use a reusable bag next time.
5. The government ______________ (take) action to reduce pollution now.
(五)阅读理解
The Earth is our home, but it is facing many problems. Air pollution from factories and cars makes the air dirty. Water pollution happens when people throw trash into rivers. Plastic waste in the ocean hurts fish and birds. To help the Earth, we can do small things every day. For example, we should recycle paper and bottles, turn off lights when not in use, and use public transport instead of driving. If everyone takes action, our planet can become healthier.
1. What causes air pollution
A. Plastic waste.
B. Factories and cars.
C. Cutting down trees.
2. How does plastic waste affect the ocean
A. It makes the water clean.
B. It hurts fish and birds.
C. It helps animals grow.
3. What should we do to save energy
A. Drive cars every day.
B. Turn off lights when not needed.
C. Use more plastic bags.
4. What is the main idea of the passage
A. The Earth has no problems.
B. We need to protect the Earth.
C. Pollution is not harmful.
答案
(一)单词拼写
1. protect
2. change
3. recycle
4. pollution
5. habitat
(二)短语翻译
1. protect the environment
2. save energy
3. reduce waste
4. plastic waste
5. take action
(三)句型转换
1. shouldn’t
2. Saving water is
3. What
(四)动词填空
1. planted
2. must
3. will clean
4. should
5. is taking
(五)阅读理解
1. B
2. B
3. B
4. B