新课标人教版选修六Book6 Unit4 Using language.ppt

Using language Preview: 1代表 on behalf of 2对……几乎没有影响 have little effect on 3承担义务 have mitment 4有能力做…… have the power to do 5众人拾柴火焰高 Together,individuals can make a difference 6 忍受 put up with 7 由于 as a result of 8只要 so long as 9 对…漫不经心 be casual about 10 等等 and so on 11 节约能源 be economical with energy 12 振奋你的精神 refresh your spirit 13 最后也是最重要的 Finally and most importantly 14 你的贡献有价值 Your contribution counts. Word study 1. commitment 2. put up with 3. electrical 4. so long as 5. circumstance 6. be casual about 7. economical A. tolerant; bear B. belief; an opinion C. do sth using less time or money D. connected with electricity; using electricity E. only if F. not showing much care or thought; not care about sth G. condition ,situation Column A Column B What has caused the global warming? ① Human activity--- burning of fossil fuels. ② Greenhouse effect--- greenhouse gases--- we need those gases. ③ Huge quantities of extra carbon dioxide---from 1957 to 1997---from around 315 parts per million to around 370 parts per million. The effects of global warming ? Negative effects: ? 1 cause the sea level to rise; ? 2 severe storms; ? 3 droughts; ? 4 famine; ? 5 destruction of species ? 6 flood ? Positive effects: ? 1 make plants grow faster; ? 2 crops will produce more; ? 3 make life better What can we do about global warming? Learning Aims: 1. To foster( 培养) the students' ability in skimming and looking up information and improve the students' reading ability. 2. To develop the students' sense of cooperation with others to solve problems. 3. To develop students' sense of environmental protection. Skim the letters and find who the writers are and what their purposes of writing the letters are. The first letter is written by a student named Ouyang Guang . The purpose is to ask for suggestions for his project — global warming. The second letter is written by an editor of Earth Care magazine. The purpose is to offer Ouyang Gua