国家公园的重要性

世界各地都有国家公园，随着越来越多的国家意识到国家公园的重要性，国家公园的数量也在不断增加。

There are national parks all over the world， with the number rising all the time as more and more countries realize the importance of national parks. The reasons why national parks are important are as follows.

National parks help protect the environment. The world's first national park， Yellowstone， was created by an act of Congress in 1872 as a “pleasuring ground for the benefit and enjoyment of the people in order to protect for all time this outstanding natural area”.

National parks are places for everybody to learn about native plants and animals and the way they rely on each other. Historic sites and aboriginal sites also help us to learn about how people lived in the past.

National parks have an impact on both the national economy and the local economy. In America， national parks bring in 300 million visitors per year and it is estimated that for every $1 spent on national parks， there is a return of $10. National parks are also important for the local rural communities that are near the national parks. Tourists visiting these areas spend money in hotels， shops， bars， restaurants， etc.， which can be a vital source of jobs and income for the local community.

National parks play an important role in promoting physical and mental health. Visitors to national parks spend their time outside actively， which can build up their body， protect against many diseases and help reduce weight gain. Moreover， walking is effective in reducing anxiety and depression. Being in nature has a calming effect on the mind and reduces the heart rate and blood pressure.

Visiting a national park in a group， as a family， or with a friend can help to strengthen those social connections and boost relationships. A visit to a national park can be a shared experience of wonder， which allows you to connect to those around you on a deeper level.

All in all， the importance of national parks comes in many forms.

Reading check

Ⅰ. Read the text and answer the following questions.

1. Why is the number of national parks rising？

2. How many reasons are given to show the importance of national parks？

Ⅱ. Read each paragraph carefully and write down its topic sentence in the table. The first one is done for you.

Ⅲ. National parks are facing problems like wildfires， climate change and pollution. Discuss in groups what can be done to protect national parks. Prepare to share your solution with the whole class.

Langage Study

V-ing形式作主语

1. V-ing 形式作主语时，谓语动词用单数。

Walking after supper is good for your health. 晚饭后散步对你的健康有好处。

2. 当作主语的V-ing 短语太长时，常用it作形式主语。

It's a waste of money buying such things you don't really need. 买那些你并不真正需要的东西是在浪费钱。

注意：在下列句式中，常用V-ing 短语作主语。

It is no use/no good/useless/fun/no pleasure/a waste of time+V-ing...

e.g. It's no use talking like this. 像这样谈话是没有用的。

主题应用·语库构建

Ⅰ. 主题词汇

theme park 主题公园

various 各种各样的

cartoon 漫画

roller coaster 过山车

pirate ship 海盗船

fairy tale 童话（故事）

fantasy 幻想

amusement 消遣活动;娱乐

entertainment 娱乐;招待;娱乐活动

swing 秋千

attraction 有吸引力的事物;吸引

tourism 旅游业

unique 独一无二的

carpenter 木匠

craftsman 工匠

preserve 保护

deed 事迹

jungle 丛林

diver 潜水员

creature 生物

sunlight 阳光

advance 前进

advanced 高级的

outing 远足

admission 允许进入;入场费

shuttle 往返两地的航班（或班车、火车）

freeway 高速公路

souvenir 纪念品

sneaker 运动鞋

brochure 小册子

buffet 自助餐

cloth （一块）布;织物;布料

edge 边缘;刀刃

ban 取缔;禁令

boundary 边界;界限

visible 看得见的;可见的

accompany 陪同;为……伴奏

company 公司;陪伴

companion 同伴;伙伴

adopt 采纳;领养

adoption 领养;采用;选定

adopted 收养的;领养的

sour 酸的;阴郁的

bless 祝福

blessed 有福的;无忧无虑的

prohibition 禁止;阻止;禁令

journalist 新闻记者

label 贴标签于;标签

stretch 延伸;舒展

rewarding 值得做的;有益的

lung 肺

cycle 自行车;骑自行车

route 路线;路途;途径

ahead 在前面;提前

incredible 极好的;极大的;难以置信的

appeal 有吸引力;呼吁;恳求

appealing 有吸引力的

adorable 可爱的;讨人喜爱的

wander 游荡;闲逛

enormous 巨大的;极大的

fashion 时尚

rare 稀少的;珍贵的;半熟的

superb 极佳的;卓越的

polar 极地的

display 展示;陈列

appetite 食欲;胃口;强烈欲望

Ⅱ. 主题短语

be famous for 因……而闻名

no wonder 难怪

be modelled after 模仿;仿照

in advance 提前

ahead of time 提前

get close to 接近……

come to life 活跃起来

on the move 在行进中;在移动中

set out for 出发去……

set out to do sth/set about doing sth 开始着手做某事

live off 依靠……生活

live through 经历（灾难或其他困境）而幸存

appeal to 对……有吸引力;对……有感染力;呼吁……

appeal to sb to do 呼吁某人做

up to 达到（某数量、程度等）

be up to sth 能胜任某事

be up to sb 由某人决定

upside down 颠倒;倒转