牛津英语8B Unit8 a green world 知识点+练习

牛津英语8B Unit8 a green world 知识总结 词汇拓展 1.wise (adj.明智的)→wisely（adv.明智地）→ wisdom(n.智慧)  2.pollute (v.污染)→pollution(n.污染）→polluted (adj.被污染的)  3.serious (adj.严肃的)→seriously（adv.严肃地） →more serious (比较级) 4.recycle( v.循环)→recycling（n.）循环利用 5.different (adj.不同的)→　difference（n.不同点）→ differently (adv.不同地)  6.punish (v.惩罚)→punishment（n.惩罚）  7.careless (adj.粗心的)→　carelessness（n.粗心） →carelessly（adv.粗心地）  8.harm (v.伤害)→harmful（adj.）有害的 →　harmless （adj.）无害的 9.simple (adj.简单的)→simply（adv.简直）  10.power (n.力量)→powerful（adj.有力量的）  11.dig v.→digging（现在分词） →　dug（过去式） →dug（过去分词） 12.allow v.→allowed（过去式） → allowed（过去分词） 13.produce(v.产生)→production(n.产品) 14.dust(n.灰尘)→dusty(adj.有灰尘的) 重点短语 Welcome to the unit and comic strip plant trees 种树 be good for... 对。。。有好处 reduce air pollution 减少空气污染 save water 节约用水 take shorter showers 缩短洗澡时间 turn off the lights 关灯 protect the environment by recycling waste 通过回收利用废品来保护环境 liv