Unit 4 Global warming Section Ⅱ Learning about Language & Using LanguageⅠ.重点单词1．average adj.平均的2．widespread adj.分布广泛的；普通的3．casual adj.随便的；漫不经心的；偶然的4．circumstance n．环境；情况5．refresh vt.使恢复；使振作6．tend vi.趋向；易于；照顾 vt.照顾；护理→tendency n．倾向；趋势7．contribution n．贡献→contribute v．贡献；投稿8．existence n．生存；存在→exist v．存在9．pollution n．污染→pollute vt.污染→pollutant n．污染物10．disagreement n．不同意→disagree vi.不同意11．growth n．延长；生长→grow vi.生长；增长12．advocate vt.拥护；提倡；主张→advocator n．拥护者13．commitment n．承诺；委托→commit v．向……保证Ⅱ.核心短语1．on_behalf_of 代表2．on_the_whole 大体上；基本上3．put_up_with 容忍4．and_so_on 等等5．as/so long as 只要6．instead of 代替7．make a difference 有影响Ⅲ.经典句式1．As I'm not sure where_to_start_with my project, I would appreciate any suggestions you may have.由于还不清楚该从哪里着手开始我的研究，我希望能得到你们的建议！2．It is OK to leave an electrical appliance on so_long_as you are using it — if_not,_turn it off!在用电器时你可以让它开着——如果不用就把它关掉！3 ． It_takes_a_lot_of_energy_to_make_things from new materials, so, if you can, buy things made from recycled materials.用新材料做东西要消耗大量的能源，因此，如有可能，就买那些用回收材料制成的物品吧。1.合成①wide adj.宽的＋spread n．蔓延，扩散→widespread adj.广泛的②micro adj.微小的＋wave n．波浪，波动→microwave n．微波；微波炉2．派生名词后缀：ence, ment, ion①exist (v.)＋ence→existence n.②commit (v.)＋ment→commitment n.③pollute (v.)＋ion→pollution n.课文预读课文理解Choose the best answers according to the text.1．Which is NOT the reason why Ouyang Guang writes the letter?A．He is doing a project on global warming.B．He feels individuals can affect huge environmental problems.C．He isn't sure where to start wit...
