我的 B6U4_language_points_1.ppt

①It is human activity that has caused this global warming rather than a random but natural phenomenon. ( Line 6) ② It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide……(Line 7) ③ It is the burning of more and more fossil fuels that had resulted in this increase in carbon dioxide. (Line 15) * Unit4 Global warming 1. … but it is a rapid increase when compared to other natural changes. temperature compare to / with 与…相比 it is compare A to B 把A比作B (两者要有相似之处) compare A with / and B 把A和B进行比较 We often compare children _____ flowers. If you compare this dictionary ______ that one, you’ll find many differences. to with 2. So how has this come about and does it matter ? come about = happen / take place 无被动语态 ( vi. ) 有关系，要紧 要紧的不是他所说的，而是他所做的。 Not _____ ____ ____ but _____ ____ ____ ______ matter. what he said what he did is 3. There is no doubt that the earth is becoming … There is no doubt that… 毫无疑问… phenomenon ( 复数 phenomena ) 现象;奇迹,罕见的人才或事物 a natural phenomenon a social phenomenon 4. …it is human activity that has caused this global warming rather than a random but natural phenomenon. 强调句 而不是 连词，无具体意义 一种自然现象 一种社会现象 是人类的活动引起了全球变暖而不是 一种无规律的自然现象 5. This is when small amounts of gases in the atmosphere…and therefore warm the earth. a (large) amount of/(large) amounts of 许多的,大量的 +不可数名词 作主语时,句子的谓语用单数 作主语时,句子的谓语用复数 ____ of money ____ spent on the bridge. A. A large amount; were B. Large amounts; were C. Large amount; was 6. …when we add huge quantities of extra carbon dioxide into the atmosphere. a (large) quantity of / (large) quantities of +可数或不可数名词 作主语时,句子的谓语用单数 作主语时,句子的谓语用复数 许多的,大量的 (2009年福建卷)—Why does the lake smell terrible? —Because large quantities of water________. A．have polluted　　 B．is being polluted C．has been polluted D．have been polluted 7. It means that more heat energy tends to be trapped in the atmosphere cau