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.）___________________12.疾病（n.）___________________branchgasproducesaveconvenientharmfuldiscussfightimaginecarryagainstdisease二、根据汉语写出下列词组1.来自__________________2.例如__________________3.对……有用，有好处__________________4.事实上__________________5.吸收__________________6.由……制成__________________7.环顾四周__________________8.数以百万计的__________________efromforexample(be)goodforinfacttakein(be)madeof/fromlookaroundmillionsof三、根据汉语补全句子,每空一词1.They________________________________（吸收有害气体）fromtheairandproduceoxygenforustobreathe.2.Alotofthefurniture________________________________(是由木头制成的).3.Weshould________________(停止做)thisifwedon’twantaworldwithouttrees.4.Rebeccawantstoknowmoreabouttreesand________________________________(它们如何帮助我们).5.Theyhelpus________________________(用很多方式)takeinharmfulgasesismadeofwoodstopdoinghowtheyhelpusinmanyways词汇精析【1】savev.拯救；保存；节约；节省;储蓄Hesavedthelittleboy.他救了那个小男孩。Saveallyourfiles.保存你所有的文件。Theonlywayistosaveenergy.唯一的办法是节约能源。【拓展】（1）savewater节约用水Weshouldtryourbesttosavewater.我们应尽量节约用水。（2）savemoney存钱Iwastryingtosavemoneytogotocollege.我当时正努力攒钱去上大学。（3）savetime节省时间Itwillsaveusmuchtime.这将为我们节省大量的时间。【应用】Animalsareourfriends.Wemustdoourbest________(save)them.tosave【2】discussv.讨论Wewilldiscussthatmatterafterlunch.午饭后我们将讨论那件事。【拓展】（1）discusssth.withsb.和某人商讨某事Thechildrenarediscussingfamilyruleswiththeirparents.孩子们正在和父母讨论家规。（2）discussionn.讨论；议论...