Unit4_Global_warming课件31(新人教版选修6）.ppt

Unit 4 Global warming 课堂考点 考点1. So how has this come about and does it matter? (Page 26) How did it come about that he knew where we were? 他是怎么知道我们在什么地方的呢？ 用法归纳 come about 发生；造成 come across 偶遇；碰到 come up with 想出(主意等) take place 发生 break out 突然发生 对应训练 (1)How did it ____________(发生)?;(2)Sometimes it is hard to tell how a quarrel ___________(发生). (3)How did this situation happen? You are to blame for it. (替换) ___________ (4)没人知道这种变化是怎样发生的。(汉译英) _____________________________________ 考点2. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. (Page 26) The squirrel hides large quantities of nuts inside trees. 松鼠把大量的坚果贮藏在树里面。 用法归纳 quantity n. 量；数量 quantities of 大量的;;;My efforts resulted in nothing. 我的努力毫无结果??? 用法归纳 result in 导致 result from 由……而造成 lead to 导致 对应训练 (1)Acting before thinking always_________(导致) failure. (2)The accident _________(造成)three people being killed. (3)The accident __________(造成)his death. (4)这场意外事故造成两人死亡。(汉译英;death) ________________________________;考点5. On the other hand, there are those, like George Hambley, who are opposed to this view and believe that we should not worry about high levels of carbon dioxide in the air. (Page 27) Many people are opposed to testing on animals while many others are for it. 许多人对动物实验持反对态度，而其他一些人却对此表示认同。 用法归纳 oppose vt. 反对；反抗；与(某人)较量 opposed adj. 反对的；对立的 be opposed to 反对…… be against 反对 object to 反对 ;;;考点7. 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. (Page 27) Even if people love each other, they fight sometimes. 即便人们很恩爱，他们有时也会争吵。 用法归纳 even if=even though 即使(引导让步状语从句) as if=as though 似乎(引导方式状语从句) if only 要是……就好了(引导虚拟语气) only if 只是在……的时候 对应训练 (1)We must consider other factors ________(即使)what you have said is right.;;average n. 平均数;平均 average vt. 平均为 对应训练 (1)What is the ______________ (平均降雨