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Unit4TheWondersofNatureSectionAWhatisamazingaboutnature?知识点一、单元词汇单词SectionA1.n.奇观,惊叹v琢磨,想知道,感到诧异2.n.数量,测量3.prep.在或到下面,低于,少于adv.在或到下面4.n.水平,高度,程度5.n.表面,表层6.n.深度,纵深7.n.&v.潜水,跳水,俯冲8.v.&n.调研,研究9.n.大船,轮船10.adj.特别的,不寻常的11.n.底部,最下部12.n.瀑布13.n.文明14.n.方式,途径pl.15.n.发展,壮大16.n.沙漠,荒原17.adj.立方的18.n.英里19.n.池塘,水坑短语SectionA1.平方千米2.在尺寸上,在大小方面3.世界上,地球上4.低于海平面5.在深海6.深海动物7.顺便说一下8....和...都,既...又...9.母亲河10.想尽一切办法11.多大12.立方米13.在..顶端二、单元重点、难点、考点精讲SectionA【考点1】theWondersofNature【解析】1wonder做名词①惊讶,惊奇,惊叹不可数名inwonder惊奇地asenseofwonder好奇感Thechildrenstaredinwonderattheelephants.孩子们惊奇地盯着大象。②奇迹,奇观,奇事可数名词TheGrandCanyonisoneofthenaturalwondersoftheworld.科罗拉多大峡谷是世界自然景观之一。常见搭配:Nowonder难怪,怪不得,不足为奇Hestayedupallnightstudying,sonowonderhelookstired.(他昨晚通宵学习,难怪他看起来很累。)Itisawonderthat+句子令人惊奇的是,莫名其妙的是,难得的是It'sawonderthat

noonewashurtintheaccident.

(事故中没人受伤,这真是难得。)做动词过去式:wondered想知道,想弄明白,琢磨①.wonder+what,who,when,where,why,how

等疑问词引导的从句Iwonderwhathe'sdoingnow.(我想知道他现在在做什么。)Iwonderwhosheis.我想知道她是谁。②.wonder+if/whether从句,表示“想知道是否…”,常用于提出非常礼貌的请求或询问Iwonderifyoucanhelpme.(不知你能否帮我一下?)——

礼貌的请求Hewonderedwhethershewouldcometotheparty.(他在想她是否会来参加派对。)形容词形式:wonderful令人愉快的,美好的,奇妙的2nature①自然界,大自然不可数名词Weneedtoprotectthebeautyofnature.(我们需要保护自然之美。)②天性,本性,本质,基本特征Shehasaverykindnature.(她生性善良。)常见搭配:bynature天生地,本性地againstnature违背自然地;不道德地【考点2】Whatislowestplaceonearth?【解析】earth①.地球,世界,不可数名词,以单数形式使用。。指我们所居住的星球,首字母常大写ThisisthemostbeautifulplaceonEarth.(这是地球上最美丽的地方。)TheyreturnedsafelytoEarth.(他们安全返回了地球。)②.陆地,地面,大地,不可数名词,以单数形式使用。与天空(sky)或海洋(sea)相对。Icouldfeeltheearthshakeasthetruckcamecloser.卡车开近时候,我能感到地面震动。③.土,泥,泥土,土壤不可数名词Shefilledthepotwithearthandplantedaflower.(她在花盆里装满土,种了一朵花。)【考点3】Itssurfaceismetersbelowsealevel.【解析】1.surface作名词,表面,表层Theleafwasfloatingon

thesurfaceofthewater.(叶子漂浮在水面上。)作动词,浮出水面,出现,显露Thesubmarine

surfaced

afteralongmission.(潜艇在执行长时间任务后浮出了水面。)2.below作介词,①在或到...下面Thefishareswimming

belowthesurface

ofthewater.(鱼正在水面下游动。)②

表示数量、年龄、温度、标准等:低于...Thetemperatureis

belowzero

today.(今天气温在零度以下。)作副词,在下面;向下,低于Fromthetopofthemountain,welookedatthecity

below.(从山顶上,我们看着下方的城市。)Seetheexample

below

formoredetails.(更多细节请参见下方的例子。)level作名词,水平,标准,等级Thewaterintheriverreachedahigh

level

aftertherain.(雨后,河里的水达到了一个很高的水平。)作动词,使平整,弄平Theyneedto

leveltheground

beforebuildingthehouse.(在建房之前,他们需要平整土地。作形容词,平的,平坦的,同水平的Finda

level

spottosetupthetent.(找一个平坦的地方搭帐篷。)【考点4】Whypeopleareresearchingthedeepsea.【解析】research作名词,不可数名词研究,调查Scientistsare

doingresearch

onanewmedicine.(科学家们正在对一种新药进行研究。)常见搭配:researchinto/onsomething(对...的研究)His

researchon

climatechangeisveryimportant.(他关于气候变化的研究非常重要。)carryoutresearch(进行研究)Theteam

carriedout

detailed

research.(这个团队进行了细致的研究。)作动词,调查,研究过去式:researchedSheis

researchingChinesehistory.(她正在研究中国历史。)【考点5】Whatisthebottomofdeepsealike?【解析】1.Whatbe...like?……怎么样?”

或者

“……是个什么样子?询问关于某人、某地或某物的描述、性质或特征。用三段对话体会一下:①A:

"Youmetmyboss?

What'sshelike?"(你见到我老板了?她人怎么样?B:

"She'sveryfriendlyandsmart."(她非常友好而且聪明。)②A:

"What'syournewschoollike?"(你的新学校怎么样?)B:

"It'smodernandtheteachersarenice."(学校很现代化,老师们都很好。)【描述环境和感受】③A:

"Youtriedthesushi.

Whatwasitlike?"(你尝了寿司。味道怎么样?)B:

"Itwasdeliciousandveryfresh."(很好吃,非常新鲜。)【描述味道】2.bottom作名词,底部,末端,末尾反义词:topPleasesignyournameat

thebottomofthepage.(请在页面底部签上你的名字。)Hewasat

thebottomoftheclass

inmath.(他的数学成绩是全班最后一名。)作形容词,最底部的;最低的;最后的Theheavybooksareon

thebottomshelf.(那些沉重的书在最底下的架子上。)$50isour

bottomprice;wecan'tgoanylower.(50美元是我们的最低价,不能再低了。)【考点6】TheYellowRiveris5,464kilometerslongandisthesecondlongest.【解析】表示物体的长,宽,高,深等的用法:结构:基数词+表示单位的名词(meter,inch(英寸),foot(英尺)等)+(长,宽,高,深的)形容词(long,wide,high,deep等)其中基数词大于1时表示单位的名词用复数形式。twometersdeep2米深8,848metershigh8,848米高4,000mileslong4000英里长同义短语:基数词+表示单位的名词(meter,inch(英寸),foot(英尺)等)+in+(长,宽,高,深的)名词(length,width,height,depth)10米宽tenmeterswide=tenmetersinwidth【考点7】BoththeNileandtheYellowRiverhelpedancientcivilizationstodevelop.【解析】1.both...and...既……又……;……和……都①连接两个名词Bothmysisterandmybrotheraredoctors.(我既姐姐又哥哥都是医生。)

【注意】当"both...and..."连接两个主语时,谓语动词必须使用复数形式。Boththeteacherandthestudent

are

here.(老师和学生都在这里。)②连接两个动词ShebothspeaksandwritesFrenchfluently.(她法语既说得又写得都很流利。)Hebothfixedmycomputerandinstallednewsoftware.

③连接两个形容词Themoviewasbothexcitingandmoving.(这部电影既令人兴奋又感人。)④.连接两个介词短语Youcanfindthisproductbothinstoresandonline.(你既在商店里又在网上都能找到这个产品。)Sheisrespectedbothbyhercolleaguesandbyherstudents.

=5\*GB3⑤.连接两个从句Irememberbothwhatyousaidandhowyousaidit.(我既记得你说了什么,也记得你是怎么说的。)2develop做动词,过去式:developed①成长,发展,壮大Regularexercisehelpsyoudevelopstrengthandendurance.

(定期锻炼有助于你增强力量和耐力。)②开发,研制Theyaredevelopinganewsoftwareprogram.

(他们正在开发一个新的软件程序。)③培养,养成(能力、习惯)It'simportanttodevelopgoodeatinghabitsearly.

(尽早养成良好的饮食习惯很重要。)④(开始)患病;出现(问题)Hedevelopedaseverecough.(他得了严重的咳嗽。)【拓展】名词形式:development发展,壮大developingcountry/developedcountry发展中国家/发达国家【考点8】Weshouldprotectthembyallmeans.【解析】①means可数名词方式,方法,途径,单复数同形,即无论表示单数还是复数,词形都是

"means"。判断单复数需要通过上下文和谓语动词。Thereisameansofcontactinghim.

(存在一种联系他的方法。)->单数Therearevariousmeansoftransportation.

(有各种各样的交通方式。)->复数②固定搭配:

bymeansof通过…方式,借助于…Hesavedthechildbymeansofarope.(他借助一根绳子救了那个孩子。)byallmeans

当然,可以,没问题,务必

,想尽一切办法"MayIborrowyourbook?"-"Byallmeans!"(“我可以借你的书吗?”-“当然可以!”)Youshouldbyallmeansvisitthemuseumwhileyou'rehere.

(你在这里的时候,务必要去参观那个博物馆。)Wemustfinishthisprojectontime,byallmeans.(我们必须想尽一切办法按时完成这个项目。)【考点9】Someblindanimalscanseeaswellasothers.【解析】aswellas的用法:1.表示“和”、“也”、“以及”用于连接两个并列的成分,但强调的重点在前面一个。结构:

A

aswellas

B翻译:

不仅B,而且A;A和B都(但更强调A)①连接两个名词:Mybrother,aswellashisfriends,isgoingtotheparty.(我哥哥,以及他的朋友们,都要去参加派对。)->强调是“我哥哥”要去。ShestudiesChinese

aswellas

Japanese.(她不仅学日语,还学中文。)->强调她在学中文。当"aswellas"连接两个名词作主语时,谓语动词的单复数形式必须与第一个主语(即A)保持一致,即主谓一致的就远原则。Theteacher,aswellasthestudents,

was

invited.(那位老师,以及学生们,受到了邀请。)->主语核心是"Theteacher"(单数),所以动词用"was"。②连接两个动词:Hecanplaythepiano

aswellas

composemusic.(他既会弹钢琴,也会作曲。)③连接两个介词短语等:Wetravelonweekends

aswellas

duringholidays.(我们不仅在假期旅行,也在周末旅行。)2.表示“和...一样好”这是"as...as"比较结构,意思是“做得和...一样好”。结构:

verb+

aswellas

+比较对象ShespeaksEnglish

aswellas

anativespeaker.(她的英语说得和母语者一样好。)【考点10】Visitingoneoftheworld’swaterfallswasamagicalexperience.【解析】1.magical形容词①魔法的,有魔力的,用于巫术的Theswordhasmagicalpowers.(这把剑拥有魔法力量。)②奇妙的,令人愉快的,美妙的Wespentamagicaleveningunderthestars.(我们在星空下度过了一个美妙的夜晚。)2.experience作名词①经历,体验可数名词,指发生在某人身上的一件具体事情或一段具体的历程ShewroteabookaboutherexperiencesinAfrica.她写了一本书,讲述她在非洲的经历②经验,不可数名词,指通过长期实践获得的知识或技能Hehasalotof

experience

incomputerprogramming.(他在计算机编程方面很有经验。)作动词,经历,体验,感受过去式:experiencedHe

experienced

alotofpainafterthesurgery.(手术后他经历了很多痛苦。)三单元语法聚焦一英语大数的表达1.101-999的表达用hundred表达,后面加and102onehundredandtwo225:twohundred

and

twenty-five

888:eighthundred

and

eighty-eight2.大数字(1,000及以上)读法规则:

从右向左,每三位一个逗号。读取时,从左到右,依次读出每个三位数,然后加上该段的单位(thousand千,million百万,billion十亿等)。9,883ninethousand,eighthundredandeighty-three65,359sixty-fivethousand,threehundredandfifty-nine265,468twohundredandsixty-fivethousand,fourhundredandsixty-eight60,263,150sixtymillion,twohundredandsix-threethousand,onhundredandfifty1,001:

onethousand

and

one12,508:

twelvethousand,fivehundred

and

eight1,900,300:

onemillion,ninehundredthousand,threehundred305,806,417:

threehundred

and

fivemillion,eighthundred

and

sixthousand,fourhundred

and

seventeen二.形容词和副词的比较级和最高级大部分形容词和副词有三个等级,即:原级(原形),比较级,最高级两者之间的比较,表示更,用三者或三者以上的人或物的比较表示最,用(一)比较等级的构成1规则变化如下:(1)单音节和部分双音节,后缀比较级加:最高级加:①单音节及部分双音节直接在词尾加-er和-esttall-fast-②不发音的原e结尾,则只加-r或-stfinenice③若原级以辅音字母+y结尾,将y变i,再加-er和-est构成比较级和最高级dryhappy④若原级以重读闭音节结尾,且末尾只有一个辅音字母,则双写这个辅音字母后加-er和-est构成比较级和最高级big-thin-(2)多音节和部分双音节词通过在其前加more和most构成比较级和最高级difficultquickly3形容词和副词比较等级的不规则变化常见的不规则变化原级比较级最高级goodwellbadbadlyillmuchmanylittlefarold二比较等级的用法:1.作比较时使用原形的句型:①表示倍数:倍数+as+原级+as

倍数+比较级+thanThisroomis

twiceaslargeas

thatone.Thisroomis

twicelargerthan

thatone.(这两句意思基本相同:这个房间是那个的两倍大。)②“as+原级+as”

表示同级比较,“和……一样”Sheis

astallas

hermother.(她和她妈妈一样高。)其否定形式为

“notas/so+原级+as”,表示“不如……”Heis

notas/sodiligentas

you.(他不如你勤奋。)2.比较级的使用:(1).核心句型:表示两者比较时,常用than比较,句型:A+动词+比较级+than+BHeis____(tall)thanTom.Lilyjumps____(high)thanTina.为了避免重复,常用代词替代前面出现过的名词。我的电脑比你的(电脑)新。→Mycomputerisnewerthan

yours.(=yourcomputer)(2).比较级的特殊用法和重要结构①可以修饰比较级的词:much,alot,alittle,abit,even,still,far等表示程度的词语修饰,用于加强语气。记忆口诀:两多(much,alot)两少(alittle,abit)两甚至(even,still)还有一个远(far)去了Jackdoeshishomework___________________(carefully)(仔细的多)thanbefore.Youlook____________(thin)thanlastyear(稍微点瘦)②表示大几岁,长几米之类的比较时,用“数量词+比较级+than”Iam___________(old)thanmybrother.③比较级+and+比较级表示越来越...Ourcountryisbecoming____________(越来越美丽)Heruns____and____(越来越快)④the+比较级,the+比较级表示:越就越Themorevegetablesyoueat,thehealthieryouwillbeThe______yourwork,the________gradesyouwillget.=5\*GB3⑤the+比较级+of+thetwo表示两者中比较...的Thebluesweateristhe____(cheap)ofthetwo=6\*GB3⑥“no+比较级+than”

“not+比较级+than”Heisnoricherthanme.

(他不比我富。)【暗示两人都穷】Heisnotricherthanme.

(他不比我富。)【只是客观比较,无暗示】⑦比较级+than+anyother+单数名词表示比任何其他的都Tomis_____(tall)thananyother___(boy)inhisclass.DannyspeaksEnglish____(well)thananyother____(man)inhiscompany.⑧比较级可以用于选择疑问句,其句型为Which/Who+比较级,AorB?Whichis___(big),thesunorthemoon?Whois____(tall),TomorMike?3.最高级的用法:表示三者及以上人或物进行比较时用最高级(1)常见句型结构:①.主语+动词+the+最高级+(名词)级+in/of+范围”。Thepictureisthebestofall.这幅画是所有画中最好的。Sheisthemostbeautifulgirlintheclass.她是班上最美的女孩。②主语+动词+oneofthe+最高级+复数名词+范围,表示“是其中最……的之一”。Parisis

oneofthemostbeautifulcities

intheworld.

(巴黎是世界上最美的城市之一。)③表示在三者及以上之间选择,用“which/whoisthe+最高级,A,BorC?”。Whoisthetallest,Tom,KateorBill?汤姆、凯特、比尔,谁最高?最高级的使用注意事项:(1)形容词副词的最高级的前面要加the,副词最高级前面的the可省略。省略the的情形:①在副词最高级前,the常常可以省略。Whocanrun

(the)fastest?(谁跑得最快?)Sheworks

(the)hardest.(她工作最努力。)②当形容词最高级前有物主代词或名词所有格时,不再用the。mybest

friend(我最好的朋友)today'shottest

news(今天最热的新闻)③当形容词最高级作表语,不表示比较,而表示“非常、极其”时,常省略the。Theviewfromthetopis

mostbeautiful.(从山顶看去的景色美极了。)Shewas

mostkind

tome.(她对我非常好。(2)最高级可被序数词如second,third等修饰TheYellowRiveris

thesecondlongest

riverinChina.(黄河是中国第二长的河流。)Thisis

thethirdmostpopular

songthisyear.(这是今年第三受欢迎的歌曲。)(3)最高级与比较级的转换最高级句型和“比较级+thananyother...”或“否定词+比较级”句型可以互换,意思基本相同。如:Heisthetallestinhisclass.

Heis

tallerthananyotherstudent

inhisclass.Nooneelse

inhisclassis

tallerthan

him.1/11过关检测一.单项选择1.The________oftheAmazonRiverisabout100metersonaverage,whichmakesitoneofthedeepestriversintheworld.A.heightB.widthC.lengthD.depth2.TheDeadSeaisafamous________oftheworld,attractingmillionsofvisitorsfromdifferentcountrieseveryyear.A.wonderfulB.wonderC.wonderingD.wondered3.Whenwevisitedthehospital,wesawadoctortryingtosavea______birdthatfellfromthetree.A.dyingB.dieC.deadD.death4.TheAmazonRainforest,the"lungsoftheearth",isbecoming________amongtravelerswholovenatureandexploration.A.popularandpopularB.moreandmorepopularC.popularerandpopularerD.themostandmostpopular5.Withtherapid________ofAI,scientistsareworkinghardto________evenmorepowerfulalgorithms(算法).A.develop;developmentB.development;developC.developing;developmentD.development;developing6.Oh,itwasfantastic!Lilydancedsowell.Well,IthinkKatedanced____thanLily.A.well B.better C.bestDgood7.Asmiddleschoolstudents,weshouldstudyhardforthefuture.Ithinkso.______westudynow,___futurewe’llhave.A.Thehard;thegoodB.Theharder;thebetterC.Thehardest;thebest.DThehard;thebetter8.Thefarmeraddedsome______totheflowerpotstohelptheplantsgrowbetter.A.earthB.groundC.earthsD.land9.Usingwordcardsisanimportant______forstudentstomemorizenewwords.A.meanB.meaningC.meantD.means10

WhatdidyouthinkofHuangguoshuWaterfall?

!OneofthemostpowerfulnaturalsightsI'veeverseen.A.Oh,that’srightB.Wow,that’samazingC.Well,it’sOKD.Hmm,it’sstrange二单词填空1.Onahotsummerday,thechildrenlovetoswimintheoutdoor________(水池,池塘)2.Afterrunningtwo________(英里),Ifeltverytiredbuthappy3.It'seasytogetlostina________(沙漠)becauseeverythinglooksthesame.4.Pleasewriteyournameatthe________(底部)ofthepage5.Shehasan________(不同寻常的)talentforlearningforeignlanguages.6.Thescientistsaredoingimportant________(研究)onthecausesofcancer.7.Thed________ofthelakeisover50meters,soit'sverydangeroustoswimhere.8.YouneedtoimproveyourEnglish________(水平)topasstheexam.9.Histestscoresareb______(低于)average,soheneedstostudyharder.10.The________(表面,表层)ofthemooniscoveredwithcratersanddust三.完形填空TheSnowLeopardThesnowleopard(雪豹)liveshighinthemountains.Ithasabeautifulfurcoatwithspots,whichhelpsithideintherocks.Butnow,thisanimalis______(1).Peoplekillit,anditshomeisgetting_____(3)thanbefore.______,thereareonlyabout4,000leftinthewild.Tohelpthesnowleopards,rangers(护林员)walkthroughthemountainstoprotectthem.They______(4)peoplewhotrytohurtanimals.Theserangersalsousecamerastolearnabouttheleopards.Snowleopardsareveryshyandusually______(5)peoplewhentheycan.Oneranger,Tenzin,said,"Oneday,Isawamotherleopardwithherbaby.Itwasa(n)______(6)momentthatIwillalwaysremember."Buthealsoworriesthatifwedon'thelp,thesnowleopardsmight______(7).______(8)theleopardsareshy,scientistsusenewtoolslikedrones(无人机)andGPStostudythem.Protectingsnowleopardsalso______(9)protectingthewholemountain,includingtheriversandforeststhatotheranimalsandpeopleneed.Thefutureofthesnowleopardandourownfutureare______(10)connected.Iftheyaresafe,themountainsarehealthy.1.A.introubleB.intimeC.inlineD.infact2.AsmallBbigCbetterDsmaller3.A.LuckilyB.SadlyC.FinallyD.Happily4.A.lookforB.waitforC.askforD.carefor5.A.avoidB.followC.meetD.thank6.A.ordinaryB.specialC.boringD.terrible7.A.appearB.disappearC.increaseD.return8.A.BecauseB.IfC.AlthoughD.So9.A.meanB.meansC.meaningD.meant10.A.slowlyB.looselyC.closelyD.rarely阅读理解ACristinaisaPortuguese(葡萄牙)student.ShedecidedtoimproveherEnglishduringthesummerholiday.Soshetookatwoweeks’summercourse(课程)intheEmbassySchool,Oxford.Nowlet’sreadaboutherexperience.Itwasawonderfulexperience.Theschoolwasononeofthecity’smostfamousstreets.Theteacherswereveryniceandtheclassroomsweremodern.TheEmbassySchoolwasn’taboardingschool(寄宿学校),soIstayedwithanEnglishfamilyduringthosetwoweeks.ItwasanexcellentopportunitytopracticemyEnglish.Theycouldn’tspeakPortuguese,ItriedmybesttocommunicatewiththeminEnglish.Theylivedinabeautifulhouse.Ilovedstayingwiththembecausetheywereveryfriendly.Everymorning,Itookthebustoschool.Classesstartedat9a.m.andfinishedat4p.m.Wehadthreeclassesinthemorningandtwoclassesintheafternoon.Ilearnedalotandmetclassmatesfromallovertheworld.Wealsovisitedthemostfamousplacesofthecountry.ItwasthebestsummerholidayI’veeverhad.MyEnglishgotmuchbetterandImadealotofnewfriends.( )1.HowlongwasCristina’ssummercourse?A.Oneweek. B.Twoweeks. C.Onemonth. D.Twomonths.( )2.Theunderlinedword“opportunity”inParagraph3means“______”inChinese.A.习惯 B.灵感 C.机会 D.仪式( )3.HowdidCristinagotoschooleverymorning?Bybus. B.Bybike.C.Bycar. D.Onfoot.( )4.HowmanyclassesdidCristinahaveeveryday?Two. B.Three. C.Four. D.Five.()5.WhatcanwelearnaboutCristina?A.Shelivedinanoldhouse.B.ShespokePortuguesewithherclassmates.C.Shedidn’tvisitanyfamousplacesinEngland.D.Shethoughthersummerholidaywaswonderful.BSharks:NotJustDangerousAnimalsManypeoplethinksharksaredangerousmonstersfrommovies.Butinfact,sharksareamazingfishthatplayaveryimportantroleinthehealthofouroceans.Thereareover500differentkindsofsharks.Theycomeinallshapesandsizes.Thewhaleshark(鲸鲨)isthebiggestfishintheworld.Itcanbeaslongasaschoolbus!Butiteatsonlyverysmallanimals.Ontheotherhand,thedwarflanternsharkissosmallthatitcanfitinyourhand.Sharksareapexpredators(顶级掠食者).Thismeanstheyareatthetopofthefoodchain.Theyhelptokeepthepopulationofotherfishhealthyandinbalance.Byeatingwe

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