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用心收获成绩，细心成就明天，恒心改变未来Unit4Savethetrees重点单词Save节约，节省pinen.松树discussv.讨论，谈论Branchn.树枝，分歧rootn.根，根源fightv.与战斗Against反对，违反example例子harmful有害的gas气体，毒气producen.农产品oxygenn.氧气major主要的convenientadj.方便的furniture家具imagine想象，想到diseasen.疾病digv.挖Holen.洞carry拿，搬运containern.容器必背短语：takein吸收comefrom来自forexample例如...
Unit4SavethetreesModule2Man’sbestfriends自主预习一、根据汉语写出英文单词1.树枝(n.)___________________2.气体(n.)___________________3.产生(v.)___________________4.拯救(v.)___________________5.方便的(adj.)___________________6.有害的(adj.)___________________7.讨论(v.)___________________8.与作斗争(v.)___________________9.想像(v.)___________________10.搬；扛(v.)___________________11.反对（prep.）___...
