Book3Unit4导学案学生版定稿.docx
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Book3Unit4导学案学生版定稿
必修3导学案
Unit4Astronomy:
thescienceofthestars
Class:
____________No:
_____Group:
____________Name:
______________
Part1WordsandExpressions
【使用说明与学法指导】
1.预习案：
I.练读词汇表、听录音跟读。
II.熟背词汇拓展表。
2.练习案：
堂上使用或课后作业，熟读熟记。
【学习目标】
1.熟读掌握本单元词汇表，并记住适当的拓展词汇。
2.对本单元的词汇熟练运用。
3.能够在课文阅读中加深对词汇的理解和运用。
【预习案】
Task:
练读课本P97-98词汇表，跟读词汇录音。
把下列拓展抄到词汇表里，并熟记。
词汇
拓展
词汇
拓展
system
systematicadj.有系统的，有规则的
exist
existencen.
existentadj.
religion
religiousadj.
puzzle
adj.puzzled感到迷惑的
puzzling令人迷惑的
theory
theoreticaladj.理论的
biology
biologicaladj.
billion
billionairen.亿万富翁
billionsof数以亿计的；亿万
satellite
man-madesatellite人造卫星
violent
violencen.
violentlyadj.
gentle
gentlyadv.
intime
ontime按时
finally/atlast/eventually最终
physicist
physicsn.物理（学）
physicaladj.物理学的;身体的
physicallyadv身体上
unlike
dislikevt.不喜欢;厌恶
extinct
extinctionn.
fundamental
fundamentallyadv.基础地;根本地;从根本上;
crash
crashdown猛然倒下
aircrash飞机失事
presence
presentadj.现在的;目前的;出席的;
v.颁发；授予；呈献；
n.现在;礼物;
lessen
lessadj.较少的（little的比较级）;较小的;
adv.较少地，较小地;
harmful
harmv.&n.
beharmfulto=doharmto
weightlessly
weighv.称…的重量;权衡
weightn.重量，体重
weightlessadj.没有重量的，失重的，无重力的;
chain
chainvt.用铁链锁住;监禁，束缚;
nowthat
since
reaction
reactv.
exhaust
exhaustedadj.耗尽的;用完的;筋疲力尽的;精疲力竭的;
exhaustingadj.令人筋疲力尽的
lay
laid,laid,laying
watchoutfor
lookoutfor
mynotes（此外，我还想到了以下拓展）
【训练案】
一．单词填空：
1.（天文学）isthescientificstudyofthestars,planets,andothernaturalobjectsinspace.
2.Overtheyearsseveralsimilar（理论）havebeenputforward.
3.Weusea（地球仪）inourgeographyclass.
4.Manycinema-goerswereshockedbythefilm's（暴力的）andtragicend.
5.Atleastthissecondmeetinghadhelpedtothaw（缓和）the（气氛）.
6."We'llallbearrested!
"Thomasyelled,whichwasmost（不像）him.
7.Clothesarea（基本的）formofself-expression.
8.Stephennoticedthatthepeoplearoundhimlookedcheeredbyhis（出现、在场）.
9.Friendship（增加）joysanddividesgriefs.
10.Thebrainrequiresaconstantsupplyof（氧气）.
11.Hecompletelyignoredallthesefactsasthoughtheynever（存在）.
12.Jimmyisadoptedand（因此）unrelatedtoBethbyblood.
13.Mysister（使迷惑）meandcausesmeanxiety.
14.The（生物学家）advancedanewtheoryoflife.
15.Anapplefallsdownbecauseof（重力）.
16.Thetwocountriessignedanagreementtojointlylaunch（卫星）.
17.If（气候）changescontinue,wewillsuffertheconsequences.
18.Thescientistcouldnotcalculatewhenthe（太空船）wouldreachtheJupiter.
19.Iletmyselfoutintothestreetand（拉）thedoorshut.
20.Someleaveswere（漂浮）aroundonthestilllake.
二．单句语法填空：
1.Most（religious）teachyoutobetruthfulandself-disciplined.
2.（globe）warmingisarealproblem.
3.TheFrenchgovernmentcalledforanendtothe（violent）.
4.Languageissomethingwhich（fundamental）distinguisheshumansfromanimals.
5.Thereisageneralawarenessthatsmokingis（harm）.
6.Theykeptme（chain）upeverynightandreleasedmeeachday.
7.Grace（lay）outtheknivesandforksatthelunch-table.
8.Surelymy（exist）cannotbesopurposeless?
9.Putonrainbootwhenwashingfloor,topreventyourselffrom（slip）down.
10.Criticsremain（puzzle）bytheBritishelectionresults.
11.At（presence）childrenunder14arenotpermittedinbars.
12.Helaidhishand（gentle）onherhead.
13.HewasawardedtheNobelPrizefor（physicist）in1985.
14.Theplantisnowindangerof（extinct）.
15.Thelifeboat（crash）againstthesideofthesinkingship.
16.Regularexercisecanhelpto（less）thepain.
17.Icheeredupimmediatelyandfloated_____________（weigh）aroundinourspaceshipcabinwatchingtheearthbecomingsmallerandthemoonlarger.
18.Ididn'tquitegetthehanghisargument.
19.IwasinanightclubinBrixtonandafightbroke.
20.Aftersuchalongand（exhaust）day,theonlythingshewantedwasagoodnight'ssleep.
Part2LanguagePointsinReading1
【使用说明与学法指导】
1.预习部分：
I.精读课文，互译文中的词汇、句型及语法结构。
II.记下自己的疑问，以备堂上讨论，释疑。
2.探究部分：
堂上完成。
3.练习部分：
堂上或课后完成。
【学习目标】
1.熟读掌握Reading1中出现的语言点，温故知新。
2.重点掌握Reading1语言点重难点的运用。
【预习案】
温故知新：
文中表达法互译或按课文填空。
正文
Qs
HOWLIFEBEGANONTHEEARTH
Nooneknowsexactlyhowtheearthbegan（____从句）,_____（由于，因为）ithappenedsolongago.However,______________（根据）a________________（广泛接受的）theory,theuniversebeganwitha"BigBang"thatthrewmatter_________________（四面八方）.Afterthat,atoms__________（开始去做...*begindoingsth.）formandcombinetocreatestarsandotherbodies.
Forseveralbillionyearsafterthe"BigBang",theearthwasstilljustacloudofdust.Whatitwastobecome（_____从句；betodosth.计划，安排做...）wasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe（____从句）.Theearthbecame___violent____（如此...以致于...）itwasnotclearwhethertheshapewouldlastornot（____从句）.Itexplodedloudly____fireandrock.Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth'satmosphere.Whatisevenmoreimportant（____从句）isthatastheearthcooleddown,waterbegantoappearonitssurface（_____从句）.
Waterhadalsoappeared____otherplanetslikeMarsbut,unliketheearth,ithaddisappearedlater.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife（_____从句;befundamentalto...对...是必要的/根本的）.Whatmanyscientistsbelieve（_____从句）isthatthecontinuedpresenceofwater_____theearth___（允许...做...）dissolveharmfulgasesandacidsintotheoceansandseas.Thisproducedachainreaction,whichmade__possibleforlifetodevelop（it作形式宾语）.
Manymillionsofyearslater,thefirst___________（极其;非常）smallplantsbegantoappear___thesurfaceofthewater.Theymultipliedand______theoceansandseas___（用...装满）oxygen,whichencouragedthelaterdevelopmentofearlyshellfishandallsortsoffish（allsortsof__________）.Next,greenplantsbegantogrow___land.Theywerefollowedintimebylandanimals.______wereinsects._______（一些...另一些）,______________________（过去分词定语）,wereabletoliveonland___________（也）inthewater.Laterwhentheplantsgrewintoforests,reptilesappeared______________（第一次,作状语）.Theyproducedyounggenerally________________（by+v-ing通过做...）.Afterthat,somehugeanimals,____________________（过去分词作定语）,developed.Theylaideggstooandexisted____theearthformorethan140millionyears.However,65millionyearsagotheageofthedinosaursended.Whytheysuddenlydisappeared（_____从句）stillremainsamystery.Thisdisappearancemadepossible____________（...的出现）mammalsontheearth.Theseanimals________________（与...不一样）alllifeformsinthepast,becausetheygavebirthtoyoungbabyanimalsandproducedmilktofeedthem.
Finallyabout2.6millionyearsagosomesmallcleveranimals,now______handsandfeet,appearedandspread_________________（遍及各个角落）.Thustheyhave,intheirturn,becomethemostimportantanimalsontheplanet.Buttheyarenotlookingaftertheearthverywell.Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.____________________（由于这样）,manyscientistsbelievetheearthmaybecome_____hot____（太...以致不能...）liveon.Sowhetherlifewillcontinueontheearthformillionsofyearstocome（______从句）willdependonwhetherthisproblemcanbesolved（____从句）.
Usefulexpressions:
accordingto根据...layeggs下蛋
allowsb.todosth.允许...做...bedifferentfrom与...不同
fill...with...用...装满...asaresultofthis由于这样
forthefirsttime第一次dependon依赖；依靠
intime及时，终于beharmfulto对...有害
givebirthto产生；分娩inone’sturn轮到某人
prevent...from阻止；制止
【探究案】
KeywordsandexpressionsinReading1
1.However,accordingtoawidelyacceptedtheory,theuniversebeganwitha“BigBang”...
然而，一种普遍为人们所接受的理论是：
宇宙起源于一次大爆炸……
【拓展】
beginwith＝___________以……开始；由……作为开头
tobeginwith首先；第一点
【例句】
1）Theproceedingswill____________aspeechtowelcometheguests.
大会议程首先是向来宾致欢迎辞。
2）____________,sheistooyoungforthatkindofjob.
首先，她做这种工作年纪还太轻。
2.Theywereintimetoproducecarbondioxide,nitrogen,watervapourandothergases.
它们最终产生了二氧化碳、氮、水蒸气和其他气体。
【拓展】
intime1.____________2.迟早,最后
__________准时，按时
attimes有时
atatime每次
innotime立刻；马上
______________同时
atonetime一度；从前
atnotime绝不（置于句首时，句子常用______）
【例句】
1）Fortunatelyasoldiercametorescue________tosavethedrowningboy.
2）Youwillsucceed__________aslongasyoudon'tgiveup.
3）_______________shouldwegiveintodifficulties.
4）Doonething___________anddoitwell.
5）Hebehavesveryoddly__________.Idon'tthinkhe'squietallthere.
3.WaterhadalsoappearedonotherplanetslikeMarsbutunliketheearth，ithaddisappearedlater.水也出现在像火星那样的其他行星上，但和地球不同，其他行星上的水后来都消失了。
【词语链接】
disliken．反感，不喜爱vt.不喜欢，厌恶
likelyadj可能的unlikelyadj不可能的
belikelytodosth.______________
It'slikelythat...___________
【例句】
1）It’smorethan_____thevoteswillhavetobecountedagain．
2）Herlatestnovelisquite________herearlierwork.
3）Ifyougoonlikethatyou'llgetyourself___________．
4）Iwasveryinterestedinthelecture,____________________（不像其他学生）.
4.Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.
许多科学家认为水的长期存在使地球得以把有害的气体和酸溶解在海洋里。
【拓展】
harmful有害的，
____________________对……有害
harmn．&vt.伤害；损害
______________＝dosbharm对某人有害
Thereisno________indoingsth做某事没有害处
____________adj.无害的
harmlessnessn．无害
【例句】
1）Drunkenness（醉酒）_____________ourhealth（对健康有害的）.
2）Nuclearpower（核能）will_____________
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