Module4SandstormsinAsia复习学案外研版必修.docx
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Module4SandstormsinAsia复习学案外研版必修
ModuleFour
SandstormsinAsia
单元目标：
1．词汇
Sandstorm,frightening,inland,mass,campaign,dune,desertification,process,citizen,
Dues,forecast,strength,cycle,mask,atmosphere,carbon,dioxide,chemical,environment,garbage,melt,pollution,recycle,coastal,concerned,evidence,major,urgent,pollute,complain,nutshell,scary,absolutely,protection.
2．词组
Digup,describe…as…,cutdown,becaughtin,asaresultof,wakeupto,oneafteranother,
Smallbitsof,inaweek’stime,takein,giveout,haveabadeffecton，lookthrough.
3．重点句子
1）Desertsalsocreatedbecausepeoplecutdowntreesanddigupgrass.
2）Tohavebeencaughtinasandstormwasaterribleexperience.
3）Icouldn’tagreewithyoumore.
4）It’sabsolutelyhopeless.
5）Youareabsolutelyright.
6）Therearelawsthatdonotallowpeopletoburntoomuchcoal.
4．语法
Differenttypesofinfinitive:
Do,todo,tobedoing,tohavedone,tohavebeendone.Forexample:
Thewindisstrongenoughtomovesanddunes.
Wewereadvisednottogooutside.
It’sfrighteningtobecyclingtoworkinasandstorm.
Tohavebeencaughtinasandstormwasaterribleexperience.
Expressionswithbut+infinitive:
Ican’thelpbutagree.
Wedonothingbuttalkaboutit.
5．功能句式
Practiceexpressingstrongopinions:
Itotallyagreewithyou.
Icouldn’tagreewithyoumore.
Ithinkyouareabsolutelyright.
It’sextremelyserious.
Absolutely!
Practicetalkingabouthowtoimprovetheenvironment:
Weneedto….
Wemust…
Weshould….
能力目标：
TalkaboutsandstormsinAsia.
Practiceexpressingstrongopinions.
Practicetalkingabouthowtoimprovetheenvironment.
Learntousedifferenttypesofinfinitiveandexpressionswithbut+infinitive
Learntodesignaposterthatencouragepeopletolookaftertheenvironment.
情感目标：
了解世界环保情况，培养环保意识。
readingandvocabulary
Step1Pre-reading
a.Lookatthephotoandanswerthefollowingquestions.
1.GetSstocomeupwithasmanywordsaspossible
whilelookingatthepicture.
2.Whatishappening?
3.Whatisthecyclistwearingandwhy?
4.Whatdoyouthinkhappenedtotrafficinthissituation?
Why?
5.Whatdoyouthinkexpertsadvisepeopletodointhis
situation?
b.Predication
Ifyouaretowritethearticlenamed“SandstormsinAsia”,howmanypartswillyouincludeinit?
Whatwillyouwriteineachpart?
Step2While-reading
a.Skimmingandscanning
Readthepassagequicklyandfillinthediagramwithoneproperword.
Part1（Para1）d__________
Part2（Para2-5）c_______
d_______
S_______
i________
s________
Part3（Para.6）m________
b.DetailedReading
1）Readthepassagecarefullyandanswerthefollowingquestion.
1Whataresandstorms?
2Inwhatplacesdotheyoftenhappen?
3WhatdoesRenJianbo’sexampletellus?
4AretheresandstormsinChina?
Where?
5HavesandstormsinChinaincreasedordecreasedrecently?
Why?
6Whydoestrafficmoveslowlyduringthesandstorm?
7WhatdoesthegovernmentdotoprotectBeijingfromsandstorms?
2）Readthepassagecarefullyandthenfillinthechartwithsuitablewords.
Parts
Content
Details
1
majordisaster
2
description
Cause
influence
suggestion
3
measures
Step3Post-reading
a.Decideifthefollowingstatementsaretrue（T）orfalse（F）.
①Scientistshavetriedmanywaystodealwithsandstorms
②Landbecomesdesertonlybecausepeoplecutdowntreesanddigupgrass.
③TheChineseCentralWestStationcannotforecastsandstormbeforeitcomes.
④Thedesertis25okilometersawaytothewestofBeijing.Sothereisnoneedtotakesomemeasures.
⑤SouthwestChinaispartofthesandstormcenterinCentralAsia.
b.Readthetextagainandcompletethefollowingsentences
1.Thewindsinasandstormcansometimes______________________________
2.WhenRenjianbowaslivinginInnerMongolia______________________________
3.SandstormsinChinaappeartohaveincreased______________________________
4.Cuttingdowntreesanddiggingupgrasscan______________________________
5.Trafficmovedslowlybecause______________________________
6.ThegovernmentisplantingtreestothewestofBeijingto______________________________
Step4languageexplanations
1massadj.大规模的amasscampaign一场大规模的战役
n.团,块,堆
amassofclouds/hotair
amassof=massesof许多,大量
themasses群众
2becaughtin被困于…,遇到…
Hewaslateforworkyesterdayafternoonbecausehewascaughtinthetrafficjam.
CharlesChaplinwasoncecaughtinasnowstormforseveraldays.
3appearv.1）出现,出版,发行
Hisbookwillappearinthebookshopnextweek.
Asmileappearedonhisfacewhenheheardthegoodnews.
2）看起来,似乎。
系动词
Sheappearedverytired.
Sheappearstowanttoleave.
4preventsomebodyfromdoing,stopsomebodyfromdoing,
keepsomebodyfromdoing
阻止某人做某事。
Note:
keepsb.fromdoing中from不可以省略,因为keepsb.doing意为：
让某人一直做某事。
其他两个词组中from省略后意思不变。
I’msorrytokeepyouwaitingsolong.很抱歉让你等了这么久。
Wemustkeephimfromcomplainingallday.
我们不能让他整天抱怨了。
grammar
不定式
Step1Presentation
Lookattheexamplesa-f.Theunderlinedphrasesareexamplesofdifferenttypesofinfinitive.
a.Thewindisstrongenough.Itcanmovesanddunes.
Thewindisstrongenoughtomovesanddunes.
b.Wewereadvised,“Don’tgooutside.”
Wewereadvisednottogooutside.
c.I’mcyclingtoworkinasandstormandit’sfrightening.
I’mfrighteningtobecyclingtoworkinasandstorm.
d.Thereisnothinganyonecando.
Thereisnothingtobedone.
e.Iamtheonlypersoninmyfamilywhohasbeeninasandstorm.
Iamtheonlypersoninmyfamilytohavebeeninasandstorm.
f.I’vebeencaughtinasandstorm.Itwasaterribleexperience.
Tohavebeencaughtinasandstormwasaterribleexperience.
Step2Explanations
I动词不定式的时态和语态形式
时态
主动
被动
一般式
todo
tobedone
进行式
tobedoing
完成式
tohavedone
tohavebeendone
1.动词不定式的一般式：
表示与主动词处于同一时间层面或动作发生于主动词之后。
eg:
HeseemstounderstandwhatIsaid
IhopetovisitParisagain.
2.动词不定式的进行式：
表示与主动词同时发生且动作正在进行。
eg:
Thetwocheatspretendedtobeworkinghard.
3.动词不定式的完成式：
表示不定式动作发生于主动词之前。
eg:
Sheseemstohaveseenthisfilm.
HehappenedtohavegoneoutwhenIwenttoseehim
4.动词不定式的被动式：
表示与逻辑主语之间的被动关系。
eg:
Themeetingtobeheldtomorrowisabouthowtostopthepollution.
Iwanttohavebeentoldthenewsearlier.
Ⅱ动词不定式的句法功能
不定式的句法功能是做主语，表语，宾语，宾语补足语，主语补足语，定语，目的状语和结果状语，分别给出一个例句：
1）Tomasteraforeignlanguageisnecessaryforacollegestudent.
（主语）
2）Yourjobistowashdishes.（表语）
3）Shepromisedtogivehimachance.（宾语）
4）Theteachertoldhisstudentstopayattentiontotheirpronunciation.（宾语补足语）
5）Iwasaskedtohelphimwithhislessons.（主语补足语）
6）Haveyougotapenciltodrawpictureswith?
（定语）
7）SomescientistswenttoGermanytoattendamedicalconference.（状语）
8）Hewastooexcitedtosayanything.（状语）
Ⅲ不定式的复合结构
1）“疑问词+不定式”可以做主语，宾语，表语，同位语。
Theproblemishowtopersuadehimtochangehismind.
2）带有逻辑主语的结构of/forsb.todosth
Thefirstthingtodoistocleantheroom.
Itisfoolishofyoutosaysuchwords.
辨析：
⑴Itis+adj.+ofsb+todosth.;//⑵Itis+adj.+forsb+todosth.
差别：
以上
（1）结构中的adj是用来说明主语的特征的，并作其表语；而结构
（2）中的adj是用来说明句中动词的特征的。
Eg:
It’sfoolishofyoutodosuchthings
可转化为：
You’refoolishtodosuchthings.
但:
It’seasyforyoutolearnEnglishwell
不可以象上边那样转化。
Step3Practice.
Ex1.
Fillintheblankswiththeverbsintheirproperforms.
1.It'sverykindofyou________itforme.（do）
2.Myjobis________thestudentsEnglish.（teach）
3.Ifyouwant________withus,youshouldbereadybyeighto'clock.（go）
4.Idarenot________himaboutit.（tell）
5.Hetoldme________atsixthirty.（leave）
6.Thechildrenarewarned________inthatlake.（notswim）
7.Beforeyouleavetheroom,pleaseremember________thelight.（turnoff）
8.You'dbetter________（stay）athomeand________（do）yourhomework.
9.It'stoohard________（do）itbymyself.10.Ittakesabouttwohours________（getto）thestation.
11.It'stime________ourclass.（start）
12.Ihavealotofthings________you.（tell）
13.I'mveryglad________youagain.（hearfrom）
14.Thearticleisnoteasy________.（understand）
15.Wedidn'thavetime________arest.（tohave）
16.I'lltry________thatagain.（notdo）
17.John'swishis________awriterinthefuture.（become）
18.I'dlike________（go）totheSummerPalace.
19.Shedoesn'tknowwhetherandwhen________Shanghaiintwodays.（leave）
20.Sheisnotsurehow________outthemathsproblem.（work）
Ex2
1.Don'tforget_________theletter.
A.tosendB.sendC.sendingD.beingsent
2.Thechairlooksveryold,butinfactitisverycomfortableto_________.
A.sitB.sitonC.besatD.besaton
3.Is______necessarytoreturnthebooktomorrow?
A.thisB.thatC.itD.which
4.I'mafraidtheywouldnotallowhim________here.
A.tosmokeB.smokingC.smokesD.smoke
5.Mothertoldme________thewaterbeforeIdrankit.
A.boilingB.boiledC.boilD.toboil
6.Onmywayhome,Istopped_______somefood.
A.buyB.tobuyC.buyingD.bought
7.Johnwasmade_______thecarforaweekasapunishment.
A.towashB.washingC.washD.tobewashing
8.Thesitting-roomneeds_______,butit'llhavetowaituntilSaturday.
A.becleaningB.tobecleanedC.cleanD.beingcleaned
9.ThefirstthingIwanttodois__________.
A.visittohimB.tovisithimC.visitinghimD.visitedhim
10.LiYangadvisedme_________toomuch,otherwiseIwouldhavebeendrunk.
A.nottodrinkB.todrinkC.notdrinkingD.drinking
Can’thelpbut结构
区别：
can’thelpdoing…禁不住…
Hearingthatshewasadmittedtoafamouscollege,shecan’thelpjumping.
1、不定式动词在介词but,except,besides等表示“除了……”之意的
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