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必修一Module5ALessoninaLab
必修一Module5ALessoninaLab
预习学案一Introduction,FunctionandEverydayEnglish
Learningaim：
课前自查
（1）单词
addv.aimn.astonishedadj.balancen.
billionn.boilvt.burnvi.&n.conclusionn.
contractvi.cruciblen.departmentn.dissolvevi.
electricaladj.electricityn.equipmentn.expandvi.
flamen.floatvi.formvt.four-fifths
gasn.ironn.lecturen.liquidn.
methodn.mixturen.one-tenthordinaryadj.oxygenn.partialadj.percentn.reactvi.rustvi.solidn.stagen.steamn.tongsn.
（2）短语
add…to…usedtointheareaofbeproudofbesupposedto
Wordsandexpressionsofsequence
First,putthemagnesium...Thenputthecrucible...Next,IlighttheBunsenburner.Afterthat,Ihold...Lastly,weneedtoweigh...
EverydayEnglish
Wheredowegofromhere?
Keepthenoisedown.
You’vegotit!
It’syourturn.
Goahead!
Definitely!
课前分析并翻译：
1.Itishardtothinkofaworldwithoutmetals.P44
2.Itisimportanttoknowhowtheyreactwithdifferentsubstances,forexample,waterandoxygen.P44
3.Thismakessurethereisnoairinthewater.P45
4.Thesciencefacilitiesareverygood,withlaboratoriesthathaveallthelatestequipment.P49
5.asthelecturersarepeoplewhohavemaderealdiscoveriesintheirareaofscience.P49
6.TheyalwaysthoughtIwouldbecomeanEnglishteacher!
P49
请同学们认真预习和思考并完成相应的练习，最后生成问题.
Q1：
……………………Q2:
…………………
预习学案二课前自查1：
Thestepsofascientificexperiment
Readthepassageasquicklyasyoucanandchoosethebesttitleforit.
A.TheDifferentUsesofMetals
B.TheReactionofMetals
C.TheReactionofMetalswithOxygen
TheReactionofMetals
Aim:
Howdifferentmetalsreactwithwaterandoxygen.
Apparatus:
（1）Heatedinoxygen
（2）putintowaterorsteam
Methods:
Result:
Conclusion:
TheReactionofMetals
Metals
Heatedinoxygen
Reactionwithwaterorsteam
Potassium
Burntoformanoxide
Reactingwithcoldwater
Sodium
Calcium
Magnesium
Reactingwithsteam
Aluminium
Zinc
Iron
Reactsslowly
Partialreaction
Copper
Partialreaction
Noreaction
Readthepassageagainandanswerthefollowingquestions:
1.Whichofthemetalsinthetablereactsthemostwithoxygenandwater?
Potassium,calciumandsodium.
2.Whathappenswhenyouheatcalciuminoxygen?
Itburnstoformanoxide.
3.Whichmetalsreactwithsteam?
Magnesium,aluminiumandzinc.
4.Doesironhaveasloworfastreactionwithsteam?
Ithasaslowreaction.
5.Doescopperreactwithwater?
No,itdoesn’t.
预习课文后回答：
ReadpassageAcarefullyandfillintheblanks.
Metalsareveryimportant,sowhenusingthemweshouldknowhowthey_____withdifferentsubstances.Takeironusedin________equipmentforexample,when______inoxygen,itwillreactslowly.Whenitisputtogetherwithwateror_____,therewillbeapartial_______.
Readthepassageandfillinthechart.
Ironindryair
Ironinair-freewater
Ironinordinarywater
StageA
（startingexperiment）
StageB
（1weeklater）
StageC
（Result）
Readthepassageagainandcompletethesentences.
1.Inthefirstpartoftheexperiment,the___isdry,notwet.
2.Itshowsthatiron___________whentheairisdry.
3.Inthesecondpartoftheexperiment,youmust____thewatertomakesurethereisno____init.
4.Youadd_________tothewaterbecausethiskeeps____outofit.
5.Itshowsthat____doesnotrustinwaterthathasno____init.
CompletethepassagewithproperwordsaccordingtoPassageAandB.
Itishardtothinkofaworldwithoutmetals.Differentmetalshavedifferentuses,forexample,ironcanbeusedin________equipment.Butaboveallweshouldknowwhetheritwill____underdifferentconditions.Otherwiseitwillkeeptheequipmentfromworkingwell.Asweallknow,ifironisheatedinoxygen,itwillreactslowlybutwillnotforman_____.
Ontheotherhand,ifitisputtogetherwithwateror_____,therewillbea______reaction.Nextlet’sdoan__________tosupporttheabove.First,getatesttubefilledwithwaterandputitoverthe_____________to___forthreeminutes.
Thenputthreeorfourcleannailsinthewaterwithsomeoiladdedtoitandleavethetubeforoneweek.Whathappens?
Theirondoesnot____inair-freewater.Anotherexperiment,ifyouputthenailsinthetubewiththeairinitforoneweek,thenwhathappens?
Ironrustsin_______water.
Readthepassageagainandanswerthequestions:
1.Whatsubstancesweretheyusing?
Bakingsodaandhydrochloricacid.
2.Whatsubstanceswerethestudentsmaking?
Salt.
3.Howcantheymakethereactionquicker?
Bymakingthemixturehotter.
4.WhatmistakesdidPaulmake?
Heusedthewrongliquid.
5.Whydidhemakethemistake?
Becausetherewasnolabelonthebottle.
6.WhathappenedwhenPaulheatedtheliquid?
Itformedathickcloudofwhitegas.
7.Whydidtheteachersendthestudentsoutoftheroom?
Becausetheliquidwasacrylamideandthegaswaspoisonous.
8.Whatlessondidtheincidentteachthestudentsandtheteacher?
Nevertoleaveabottlewithoutalabelinthechemistrylab.
预习学案三languagepoints1.Whenweusemetals,itisimportanttoknowhowtheyreactwithdifferentsubstances,forexample,waterandoxygen.
=Whenweusemetals,weshouldknowhowmetalsreactwithdifferentsubstances,forexample,waterandoxygen,whichisveryimportant.
本句是一个复合句，其中when引导时间状语从句；在主句中，it为形式主语，真正的主语是动词不定式短语toknow...substances，其中how...substances为how引导的宾语从句，作know的宾语，forexample引出同位语，表示举例。
reactwith意为“对……起反应”。
如：
Ironreactswithwaterandairtoproducerust.
铁与水和空气起化学反应而生锈。
此外，react还可以同其他介词搭配,表示不同的意思。
如：
reactonsth对某事物有影响；使某事物产生变化。
如：
Howdoacidsreactonmetals?
酸对金属起什么反应？
reactagainst反对；反抗如：
Willthepeopleeverreactagainstthedictator?
有朝一日人民会起来反抗这个独裁者吗？
2.Thereactionofmetalswiththese
substancescanbeputinorder.
inorder意为“井然有序的；整理好
的”。
如：
Shekeepstheroominorder.
她把房间整理得很好。
Iputmyroominorder.
我把自己的房间整理好。
此外，inorder还有“依照次序;（机器等）情况良好”的意思。
如：
Callthenamesinorder.
请依照次序叫名字。
Mybicycleisinorder.
我的自行车情况良好。
含有order的其他短语：
inorderfor…todo以便……能……
inshortorder很快地
onorder已订购
ontheorderof与……相似的；（数量等）约……的
outoforder不整齐的；杂乱的；出毛
病；顺序紊乱
toorder定做的如：
Hespokeslowlyinorderforeverybodytounderstandhim.
他讲得很慢以便每个人都能听懂他的话。
Thebookisonorder.
那本书已订购。
Everythingwasoutoforderintheclassroom.教室里乱七八糟。
Hisliverisoutoforder.
他的肝脏出了毛病。
3.Addsomeoiltothewater.
【考点】add及其短语辨析。
add...to...把……添加到……上；addto增加，增添；addupto总共有，意味着。
【考例1】That’sallIhavetosay.Isthereanythingthatyou’dliketo_____,Terry?
（2008四川延考卷）
A.talkB.require
C.addD.deliver
4.Thiswillkeepairoutofthewater.
keepsb./sth.outof意为“不让某人/某物进入某处”。
keepout（ofsth.）不进入某处；留在外边
keepupwithsb.保持与某人的联系
keepupwithsth.知悉（消息）;跟上（形势）
keepup（withsb./sth.）跟上某人/某事物
keepoff不接近或不接触某人/某事物
5.Irondoesnotrustinair-freewater.
air-free为形容词，意为“没有空气的”。
-free用以构成形容词或副词，意为“无，免除”。
类似的：
carefreeadj.无忧无虑的;无牵挂的;轻松愉快的
duty-freeadj.&adv.免税的
disease-freeadj.无病的
worry-freeadj.无忧无愁的
6.Half-fillatesttubewithwater…
fill…with意为“使……满；填满”。
Hefilledthebottlewithwater.
他把瓶子装满水。
Hereyeswerefilledwithtears.
她热泪盈眶。
Theresultfilledhisheartwithdespair.
这样的结果使他心中充满失望。
7.Leavethetubeforoneweek.
leave意为“放置,不去动某物,使……
处于某种状态”。
如：
Leavethechildasheis.
这孩子随他去，别去惹他。
Wholeftthelightson?
谁没开灯？
Leaveabasinofwateroutsideinthefreezingweather,anditwillsoonfreeze.
在极冷的天把一盆水放在室外,水很快会结冰。
预习学案四Grammar
英语倍数表达法
用英语表达"A是B的N倍长（宽，高，大，重等）"，"A比B长（宽，高，大，重等）N倍"或"A的长度（宽度，高度，大
小，重量等）是B的N倍"，可用下列几种句型。
1."A+be+倍数+as+计量形容词原级+as+B".
Thistreeisthreetimesastallasthatone.这棵树是那棵树的三倍高。
Hisfatheristwiceasoldashe.他父亲的年纪有他两倍大。
2."A+be+倍数+计量形容词比较级+than+B"
TheYangtzeRiverisalmosttwicelongerthanthePearlRiver.
长江差不多比珠江长两倍。
Thedictionaryisexactlyfivetimesmoreexpensivethanthatone.
这本字典比那本恰好贵5倍。
3."A+be+倍数+the+计量名词+of+B"
Thenewlybroadenedsquareidfourtimesthesizeofthepreviousone.
新扩建的广场是未扩建时的四倍大。
4."The+计量名词+of+A+be+倍数+that+of+B"
Thesizeofthenewlybroadenedsquareisfourtimesthatofthepreviousone.
新扩建的广场为以前的四倍大。
5.其它
I'mtwice/doublehisage.我的年龄是他的两倍。
I'vepaidfivetimestheusualpriceforthestamp.
我出了5倍于往常的价格买这枚邮票。
Theaverageincomeofthestaffhasbeenincreasedby50percentcomparedwithlastyear.与去年相比，该单位职工的
收入增加了50%.
ThepriceofTVsaretwofold（adj.两部分的,双重的）downovertheseyears.
近几年来，电视机的价格下降了两倍。
the+比较级……，the+比较级……
意为“越……，越……”。
前面部分是从句，后面部分是主句。
Theharderyouwork,themoresuccessfulyouwillbe.
Theearlieryoucome,thebetterplaceyoucanfind.
“比较级+and+比较级”
表示“越来越……”。
Hebecomesfatterandfatter．
比较级前还可以用much，even，still，alittle等来修饰。
VIII.Dealwiththeexercisesonpages45,46and47
【高考题展示】
1.Tenyearsagothepopulationofourvillagewas_____thatoftheirs.（陕西2008）
A.astwicelargeas
B.twiceaslargeas
C.twiceasmuchas
D.astwicemuchas
2.Ataroughestimate,Nigeriais_____GreatBritain.（上海2005）
A.threetimesthesizeas
B.thesizethreetimesof
C.threetimesasthesizeof
D.threetimesthesizeof
3.Inrecentyearstravelcompanieshavesucceededinsellingustheideathatthefurtherwego,_____.
（上海2001）
A.ourholidaywillbebetter
B.ourholidaywillbethebetter
C.thebetterourholidaywillbe
D.thebetterwillourholidaybe
4.Ofthetwosisters,Bettyis_____one,andsheisal
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