外研版（2019）选择性必修 第一册Unit 6 Nurturing nature Understanding ideas 知识点课件(共20张PPT)

(共20张PPT)
Unit 6 Nurturing nature
Understanding ideas
Language points
Ⅴ
① 宣称；声称
Scientists are claiming a major breakthrough in the fight against cancer. 科学家们宣称攻克癌症已有重大的突破。
1. claim v
Language points: Important words and expressions
② 索要；索取
She claimed damages from the company for the injury she had suffered. 她因受伤向公司要求获得损害赔偿金。
③ 夺走；夺去（生命）
The car crash claimed three lives. 那次撞车事故导致三人死亡。
2. steadily adv 稳定地；稳固地
The company’s exports have been increasing steadily.
公司的出口量一直稳步增长。
Language points: Important words and expressions
The situation got steadily worse. 局势逐渐恶化。
He looked at her steadily. 他凝视着她。
The rain fell steadily. 雨不紧不慢地下着。
3. delicate adj 易损的；易碎的；脆弱的
Language points: Important words and expressions
delicate china teacups 易碎的瓷茶杯
近义词：fragile
The eye is one of the most delicate organs of the body.
眼睛是人体最娇贵的器官之一。
the delicate ecological balance of the rainforest
热带雨林脆弱的生态平衡
1. at one’s leisure ________________
2. allow sb to do sth ________________
3. make sure ________________
4. stay healthy ________________
5. enjoy regular breaks ________________
在某人有空时
允许某人做某事
确保
保持健康
享受有规律的休假
Language points: Important lexical chunks
6. a sense of pride and achievement ____________________
7. protect sb / sth from sth ____________________
8. reach out ____________________
9. bring … to life ____________________
10. thanks to ____________________
保护某人 / 某事免受……
伸出（手……）
使……苏醒 / 焕发生机
Language points: Important lexical chunks
一种自豪感和成就感
多亏了
1. The words “railways like massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”.
Paraphrase: When I travel across the Qinghai-Tibet Plateau, the words of the song become clear in my mind. I come to understand the lyrics which say that railways run over mountains, turning and twisting like huge dragons.
Language points: Important sentences
1. The words “railways like massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”.
Language points: Important sentences
wind在此处作动词，意为“（道路、河流等）蜿蜒，曲折前进”；wind作动词时还有“缠绕，卷绕”的意思，常见的搭配是 wind sth around / round sth 意为“把某物缠绕在……上”。
此外，注意 the “roof of the world” 的表达，意思是“世界屋脊”，用来指代 the Qinghai-Tibet Plateau （青藏高原）。
2. Taking years to complete, the Qinghai-Tibet Railway is a record of all of our efforts to overcome the most difficult engineering challenges.
Language points: Important sentences
Paraphrase: The construction of the Qinghai-Tibet Railway took us several years and it shows that we made every effort to get over the greatest difficulties in engineering.
Taking years to complete 是非谓语动词作状语，和主句主语 the Qinghai-Tibet Railway 是主动关系，所以用现在分词形式。
3. How to protect the delicate ecosystem was among the top concerns.
Language points: Important sentences
Paraphrase: Because the ecosystem of the Qinghai-Tibet Plateau is easily damaged, when we built the railway, it was one of the problems we first considered.
the delicate ecosystem 脆弱的生态系统
delicate 是形容词，意为“易损的；易碎的；脆弱的”
近义词：fragile
3. How to protect the delicate ecosystem was among the top concerns.
Language points: Important sentences
concern在这里作名词，意为“忧虑，担心”。
例如：There is growing concern about violence on TV. 人们对电视上充斥暴力内容的忧虑日益加重。
concern还可以作动词，意为“使担心，使忧虑”。例如：Issues like food additives do concern me.
食品添加剂这类事情确实使我很担心。
4. The first landmark to catch my eye is the splendid Qingshuihe Bridge, the world’s longest bridge built over permafrost.
Language points: Important sentences
Paraphrase: The first thing I see from a distance is the very impressive Qingshuihe Bridge. It is the longest bridge in the world which is built over permanently frozen soil.
4. The first landmark to catch my eye is the splendid Qingshuihe Bridge, the world’s longest bridge built over permafrost.
catch sb’s eye 为固定搭配，意为 to attract someone’s attention and make them look at something
Language points: Important sentences
4. The first landmark to catch my eye is the splendid Qingshuihe Bridge, the world’s longest bridge built over permafrost.
要注意一些eye的常见搭配。
can’t take your eyes off sb / sth 无法将目光从某人身上 / 某物上移开
look sb in the eye 正视某人 keep an eye on sb / sth 照看某人 / 某物 have an eye / a good eye for sth 对某事物有鉴赏力
Language points: Important sentences
5. In locations such as this, the thin air, changeable weather and high levels of UV radiation presented perhaps the greatest challenge for railway workers.
Language points: Important sentences
Paraphrase: At the altitude of over 5,000 metres, where the air is thin, the weather is always changing, and the UV radiation is strong, it was very difficult for workers to build the railway.
5. In locations such as this, the thin air, changeable
weather and high levels of UV radiation presented perhaps the greatest challenge for railway workers.
Language points: Important sentences
present在这里作动词用，意为“引起，造成”。
present作动词时还有“颁发，授予”的意思。
She was presented with an award. 她被授予一个奖项。
present作形容词，意为“当前的；出席，在场”。
in the present situation 在当前形势下
There were 200 people present at the meeting. 有200人出席会议。
6. Water birds playing in the lake, and cattle and sheep wandering the grasslands bring the scenery to life.
Language points: Important sentences
Paraphrase: The grasslands are full of life, with water birds playing in the lake, and cattle and sheep moving around.
在本句中动词-ing形式的使用可以给读者带来生动的画面感。本句中 Water birds playing in the lake 和 cattle and sheep wandering the grasslands 两个动名词短语充当主语。
VI
Homework
Homework
Draw a road map of the Qinghai-Tibet Railway and summarize the reading passage.