安徽科技学院：《大学英语读写》课程教学资源（PPT课件，二级）Unit 5 The Villain in the Atmosphere

Unit 5 The Villain in the Atmosphere

Unit 5 The Villain in the Atmosphere

Para.2 It is not very poisonous and it is present in the atmosphere in so small a quantity-only 0.034 percent-that it does us no harm. 它毒性不大，在大气层中的含量极小一只占0.034%一 一不会对我们造成任何伤害。 (1)poisonous:adj.containing or having the effect of poison有毒的 必 This medicine is poisonous if taken in large quantities. (2)do (sb.)harm/good;do harm good to sb./sth... 害有益 e.g.Smoking does harm to our health. (3)so+a.+a/an+n.+that如此.以至于

Para.2 ❖ It is not very poisonous and it is present in the atmosphere in so small a quantity — only 0.034 percent — that it does us no harm. ❖ 它毒性不大，在大气层中的含量极小——只占0.034％— —不会对我们造成任何伤害。 ❖ (1) poisonous: adj. containing or having the effect of poison 有毒的 ❖ This medicine is poisonous if taken in large quantities. ❖ (2) do (sb.) harm/good; do harm / good to sb./sth. 对…有 害/有益 ❖ e.g. Smoking does harm to our health. ❖ (3) so + a.+ a/an +n. + that 如此…以至于

Para.3 What's more,that small quantity of carbon dioxide in the air is essential to life. essential 名 n.a basic thing that you cannot live without必需品 e.g.Because I live in a remote village,I regard my car as an essential. 8 We only had time to pack a few essentials. 的 adj.necessary;needed必不可少的 e.g.It is essential for/to us to try to decide whether television is a blessing or a curse

Para.3 ❖ What’s more, that small quantity of carbon dioxide in the air is essential to life. ❖ essential ❖ n. a basic thing that you cannot live without 必需品 ❖ e.g. Because I live in a remote village, I regard my car as an essential. ❖ We only had time to pack a few essentials. ❖ adj. necessary; needed 必不可少的 ❖ e.g. It is essential for/to us to try to decide whether television is a blessing or a curse

Para.3 Plants absorb carbon dioxide and convert it into their own tissue,which serve as the basic food supply for all of animal life. 必 convert:vt. 1)change from one form or use to another (使)转变，转换 e.g.Coal can be converted to gas. I want to convert some dollars into pounds

Para.3 ❖ Plants absorb carbon dioxide and convert it into their own tissue, which serve as the basic food supply for all of animal life. ❖ convert: vt. ❖ 1) change from one form or use to another （使）转变，转换 ❖ e.g. Coal can be converted to gas. ❖ I want to convert some dollars into pounds

Para.3 2)persuade or induce to adopt a particular religion,faith,or belief(使)改变（宗教或 信念)，改变 (想法或习惯) e.g.She managed to convert him to her opinion. serve as:be used for a particular purpose e.g.There was an old temple that served as a school for the kids

Para.3 ❖ 2) persuade or induce to adopt a particular religion, faith, or belief （使）改变（宗教或 信念），改变（想法或习惯） ❖ e.g. She managed to convert him to her opinion. ❖ serve as: be used for a particular purpose ❖ e.g. There was an old temple that served as a school for the kids

Para.5 Where there are low-lying coastal areas (where a large fraction of the world's population lives) the water will advance steadily,forcing people to retreat inland. advance v. 冬 to move forward towards sb.sth.前进，（使）向 前移动 e.g.The troops were finally given the order to advance

Para.5 ❖ Where there are low-lying coastal areas (where a large fraction of the world’s population lives) the water will advance steadily, forcing people to retreat inland. ❖ advance v. ❖ to move forward towards sb./sth. 前进，（使）向 前移动 ❖ e.g. The troops were finally given the order to advance

Para.5 冬to develop and improve发展，进步 e.g.Our knowledge of the disease has advanced considerably over recent years. to suggest an idea,a theory,or a plan for other people to discuss提出（想法，理论， 计划等) e.g.This article advances a new theory to explain changes in the climate

Para.5 ❖ to develop and improve 发展，进步 ❖ e.g. Our knowledge of the disease has advanced considerably over recent years. ❖ to suggest an idea, a theory, or a plan for other people to discuss 提出（想法，理论， 计划等） ❖ e.g. This article advances a new theory to explain changes in the climate

Para.6 Florida will disappear beneath the waves,as will much of the British Isles,the crowded Nile valley, and the low-lying areas of China,India,and Russia. (1)“as”作为连词引导了方式状语从句，为了保持 句子平衡，使用倒装句。 冬 e.g.He traveled a great deal as did most of his friends. He was exhausted,as were all the others in the team. See P112 in our book

Para.6 ❖ Florida will disappear beneath the waves, as will much of the British Isles, the crowded Nile valley, and the low-lying areas of China, India, and Russia. ❖ (1) “as”作为连词引导了方式状语从句，为了保持 句子平衡，使用倒装句。 ❖ e.g. He traveled a great deal as did most of his friends. ❖ He was exhausted, as were all the others in the team. ❖ See P112 in our book

Para.11 Each year since,the concentration has crept upward and it now stands at 0.0340 percent. 必 creep v.move or advance slowly and quietly 慢地行进，潜行 必 e.g.The traffic was creeping along at a snail's pace. 必 I crept up the stairs,trying not to wake my parents. (2)Meaning:Since 1958,every year the gathering of carbon dioxide has increased and now it was about 0.0340 percent

Para.11 ❖ Each year since, the concentration has crept upward and it now stands at 0.0340 percent. ❖ creep v. move or advance slowly and quietly 缓 慢地行进，潜行 ❖ e.g. The traffic was creeping along at a snail’s pace. ❖ I crept up the stairs, trying not to wake my parents. ❖ (2) Meaning: Since 1958, every year the gathering of carbon dioxide has increased and now it was about 0.0340 percent

Para.11 (3)Q:What's the function of "creep upward"? A:It vividly shows us the increasing process of carbon dioxide,which moving slowly and quietly. (4)Translate the sentence into Chinese. 。此后每年，其浓度逐年悄悄攀升，而现在已 达到0.0340%

Para.11 ❖ (3) Q: What’s the function of “creep upward”? ❖ A: It vividly shows us the increasing process of carbon dioxide, which moving slowly and quietly. ❖ (4) Translate the sentence into Chinese. ❖ 此后每年，其浓度逐年悄悄攀升，而现在已 达到0．0340％