B3U4教材与语法填空

Unit4Astronomy:thescienceofthestarsⅠ.分类记单词快速掌握阅读单词——认一认(1)astronomyn. (2)atmospheren. (3)fundamentaladj. (4)chainn. (5)gravityn. (6)satelliten. 核心单词——写一写(1) n. 系统;体系;制度(2) n.学说;理论(3) vi.&vt.碰撞;坠落(4) n.& vt. 拉(力);拖;牵引力 vi.&vt. (使浮动;(使n.漂浮物 adj.猛烈的激烈的强暴的→ n.暴力→ adv.猛烈地 prep.与……不同;不像→ 反义词)prep.像→ v.&n.不喜欢 adj.有害的→ n.害处vt.对……有害 vi.存在;生存→ n.存在 vt.&vi.使迷惑;(使n.谜;难题→ adj.迷惑不解的Ⅱ.联想背短语 高效识1. 及时;终于2. 对……有害3. 轮到某人;接着4. 阻止;制止5. 感到高兴;感到振奋6. 既然7. 突发;爆发 8.layeggs 9.givebirthto 10.blockout 11.watchoutfor Ⅲ.精彩写句式 典句背诵Theearthbecame (如此猛烈以至于)itwasnotwhethertheshapewouldlastornot.(so.that句型)This produced a chain reaction, which (使生命的发展成为可能). it+adj.+forsb. todosth.)But when I tried to step forward, I found I was carried 两倍远)ontheearthandfellover.倍数表达法)Walkingdoesneedabitofpractice (既然)gravitychanged.(nowthat引导原因状语从句)Ⅰ.教材与语法填空根据课文内容,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。Theearthwasjustacloudofdust1. futureisuncertainafterthe“BigBang”. Thenthedustbegantosettleintoasolidballwhichisso2. (violence)andexplodedloudlywithfirerock,tobeintime3. (produce)manythings,whichmaketheearth’satmosphere. Astheearthcooleddown,waterbegantoappearanditallowedtheearthtodissolve4. (harm)gases.Thenlifebegantodevelop.Manymillionsofyearslater,smallplantsappeared.Theymultipliedand5.(fill)theoceansandwithoxygen.Land6. (animal)followedafterthefirstgreenplantsappeared.Thensmallcleveranimalsspreadall7.theearth.Humansdevelopednewmeansofgrowing,huntingandmovingaround.Astimewentbytheycoveredtheearth.Nowtoomuchcarbondioxidehasbeenputtingintotheatmosphere,whichpreventsheatfrom8. (escape)fromtheearthintospace.As9. result,theproblemofglobalwarmingoccurs10. willcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.Ⅱ.教材与短文改错根据课文内容,10处语言错误每句中最多有两处。错误涉及一个单词的增加、删除或修改。LastmonthIpaidavisitthemoonwithmyfriend. Beforeweleft,Iwastoldtheforceofgravitywouldchangethreetimeonourjourney. Thenwetookup. Aswelefttheearth,Ibecameheavily. Graduallytheweightlessen. WhenIwasinspace,itwasdisappeared. WefloatedweightlesslyinthecabinandIcheeredup.WhenIwasonthemoon,Iwassurprisetofindevenwalkingneededlotsofpracticenowthatgravitychanged. Thereturningofearthwasveryfrightened. Wewereamazedtowatchfirebrokeoutontheoutsideoftheship.Ⅲ.教材与话题写作用本单元所学知识完成下列句子,并按照逻辑连成短文。火星上有生命吗?不知道。我们能成功登上火星吗?科学技术的发展。IstherelifeonMars?Wedon’tknow.CanwelandonMarssuccessfully?Thatall thedevelopmentofscienceandtechnology.到目前为止,我们虽然对火星有点了解,没有氧气,50度左右,100右。这阻止我们在那里生活。Untilnowwe Mars,butthat’snotenough. almostnooxygenonMars.Itmightbeabout50degreesabovezeroatnoonand100degreesbelowzeroatnigh