选修6unit4languagepoints.doc

Unit 4 Global warming Language Points:Warming up:An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out. Pre-reading 1. The air inside is warm because the glass traps the heat from the sun and keeps it from escaping, which makes the greenhouse heat up and so the plants can grow throughout the cold period. 温室气体里面的空气是温暖的，因为玻璃从太阳获取了热量并防止了热量的流失,这使得温室里的温度升高，于是植物可以在寒冷的季节里生长。heat up : vt./ vi加热；发热；热起来 heat (up) some water trap: v. (1) (usually passive )困住，关住，使陷入危险中 e.g. Twenty miners were trapped underground. 20名员工被困在地下了。 (2) (to hold and keep gas , water , etc so that it can be used later) 把（气体，水等）储存，留存 the glass traps the heat from the sun and keeps it from escapingn. 陷阱 set a trap be t_ s_ c_ l_ in 陷入，被困住In April, thousands of holidaymakers remained _ abroad due to the volcanic ash cloud.A. sticking B. stuck C. to be stuck D. to have stuck2. In the atmosphere surrounding the earth there are gases called “greenhouse gases”.Reading:The Earth is Becoming Warm - But Does it Matter? 全球变暖-这会带来什么影响吗?1.fahrenheit: adj.“华氏温度计的”冰点是32度；沸点是212度。Fahrenheit要大写第一个字母，它的简写形式是F 或Fahr e.g. Water freezes at 32 degree Fahrenheit （32F）. degree: n. “温度” 。通常跟在数词的后面；或在数词的右上角加“”其后常跟表示温度单位的词，Fahrenheit “华氏的”，Celsius / Centigrade “摄氏”，写成“degrees Fahrenheit ; degrees Celsius / Centigrade ”, degree常用复数形式；也常简略成 ：F或C.Celsius / Centigrade : “摄氏的，常见略成为C.” ,冰点是0度，沸点是100度。在英美国家，温度的表达常用Fahrenheit,亚洲国家常用Celsius / Centigrade。 e.g. The temperate was ten degrees Celsius / Centigrade10this morning. 2. That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. Compare with _ Compare to (1) _ (2)_(1) _ (compare ) these two sentences and you will find the differences.(2)_ (compare ) these two sentences , you will find the differences.(3) _(compare) with that one, this sentence is easy. (4)_(compare) to girls, boys are lazy.(5) Girls are _ (compare )_ flowers.(6) Young people _ the sun in the morning. A. compare with B. compare to C. are compared to D. C. are compared with(7) Living in a city cant _ living in the country.A. be compared to B. compare between C. compare to D. compare with 3There is no doubt that the earth is becoming warmer(see Graph 1 ) and that it is human activity that has caused this global warming rather than a random but natural phenomenon. chart: n. graph : n. diagram: n.doubt: vt. (1) I doubt _ _ (2) I dont doubt _ n. (1) There is some doubt _ There is no doubt _ (2) without doubt “无疑地；确定地” e.g. Dont worry. He will come back without doubt. 总结归纳：There is + n. (1)There is no need _ 不需要、不必 (2)There is no difference between没区别(3)There is no room for没有的余地 (4)There is no sense/ _/_( in) doing (5)There is no trouble difficulty _ _ (6)There is a chance that of 有可能(7)There was a time when 从前曾经有一个时候4. All scientists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. 5. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. 这个升温过程的一些副产品就叫做“温室”气体，其中最重要的就是二氧化碳。6. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapor, trap heat from the sun and therefore _ _ _ _ _ warm the earth.7. The problem begins / a_/ c_ when we add huge qualities of extra carbon dioxide into the atmosphere.而我们增加了大量的额外的的二氧化碳在大气气层中时，问题就出现了。8. It means that more heat energy tends to be trapped in the atmosphere causing the global temperate to go up. 这意味着更多热量被困在大气层中，从而引起全球温度上升。9. It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. 10. They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide .11. So how high will the temperature increase go ? 那么，气温会升高多少呢？ go: vi.达到； 达到某种程度 e.g. Differences between employers and workers go deep. 雇主与工人之间的分歧很深。12. Dr. Janice Foster says that over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius, but it could be as high as 5 degrees. over the next 100 years= during 在.期间 e.g. Well visit him _the weekend. could 表示_ as many as - as much as这两个短语常用于数字前，以加强语气，意思是“多达; 和一样多”。(1) as many as 常用于某人或某处拥有的物品数量，后接“数词+复数名词”强调物品或人的数目。e.g. He has mastered （as many as）5000 English words.(2)指金钱，丈量，时间 ，重量，水量，雨量，热量等方面的程度或数量，常用：as much as+ 数词+复数名词；或用as much + 不可数名词+ as e.g. She has spent as much as 100 dollars today. 她今天花钱多达 e.g. I have as much money as he.我和他拥有一样多的钱。考题1.I have got _ he does; that is, there are _ in my family.A. as a big family as; as many people as 10 B. as big a family as; as many as 10 peopleC. as big as a family ; people as many as 10 D. a family as big as ; as 10 people as many 考题2：The amount of money that he saved reached _ 30,000 dollars. A. as many as B. as much as C. as high as D. as far as13. Dr. Janice Foster thinks that trend which increases the temperature by 5 degrees would be a catastrophe. Would 表_，比will与其要弱。14. She says, “We cant predict the climate well enough to know what to expect, but it could be veryserious.” could 表示_，译为_15. They predict that any warming will be mild with few bad environmental consequences. environmentally friendly 16. Greenhouse gases continue to build up in the atmosphere. 温室气体继续在大气层中聚集。build up : (1) build sb. up- to make someone well and strong again , especially after an illness 使（某人）逐步恢复体力（尤指病后）(2) (使)增加 ，逐渐增加 e.g. Try and build up his confidence a bit. 试试让他增加对自己的信心e.g. Look at the clouds _(bulid)up in the sky. 17. Even if we start reducing the amount of carbon dioxide and other greenhouse gases , the climate is going to keep on warming for decades or centuries.即使我们开始减少二氧化碳和其他温室气体的含量，在（未来）几十年或几个世纪内，气候仍会持续转暖。Even if -可_可_ (1)Well go even if it _(rain). (2)Even if the sea should run dry and rocks crumble , my love to you shall remain loyal. Using language:1. Together, individuals can make a difference. 众人拾柴火焰高。Review: make a difference起（重要）作用；关系重大； 差别对待 make a big a great d_ of _ difference make_/ _ difference 有些/ 没有影响tell the differences between_ 句式：It makes no/much difference to sb. wh-. 对没关系/关系重大2. We do not have to put up with pollution. 我们不必去忍受污染。 dont have to = _= neednt do 3. Here are a few suggestions on how to reduce it. They should get you started with your project.