Unit 13 The water planet2

Unit13TheWaterPlanet1.Whatisthechemicalstructureofwater?A.Carbon&Oxygen.B.Nitrogen&Oxygen.C.Hydrogen&Oxygen.2.Whatisthefreezingpointofwater?A.0℃B.100℃C.0℉3.Whatstateiswaterinatroomtemperature?A.LiquidB.SolidC.Gas4.Anicecubecanfloatonwater.Ithassomethingtodowithwater’s.A.salinityB.densityC.heatcapacity5.Thecoastalareasareoftenneithertoohotnortoocold.It’sbecauseofwater’s.A.salinityB.densityC.highheatcapacityFindthedefinitionofanestuaryAnestuaryisthebodyofwater______arivermeetstheocean.Saltwaterfromtheoceanandfreshwaterfromtherivermix_______inanestuary.This______offreshandsaltwatercreatesauniqueenvironment_____withlifeofallkinds－azonebetweenthelandandsea.wheretogethermixingfilledGreatplacesfornature’syounganimals.Cleanourwaterbyabsorbingnutrientsandpollutantsfromwatercomingfrominlandsources;Providebothrecreationandeducationforhumanbeings.Whatkindsoffunctionofestuarieshavebeenmentionedinthepassage?(1)Whyareestuariessuchgoodplacesfornature’syoungone?(2)Whatdoesdensitymeaninthispassage?(3)Howdoestuariesaffectthewaterthatpassesthroughthem?(4)Whyareestuariesmoresensitivetopollutionthanotherareas?(5)Whyareestuariesimportanttohumanbeings?1.Whyareestuariessuchgoodplacesfornature’syoungones?Inestuaries,animalscanenjoyallthebenefitsoftheoceanswithouthavingtofacemanyofitsdangers.Tidesprovideenergyfortheecosystems,butestuariesareprotectedfromwavesandstormsbyislands,mudorsand.Nutrientsfromboththelandandtheoceanarriveinestuaries.Readthepassageandanswerthefollowingquestions.4.Whyareestuariesmoresensitivetopollutionthanotherareas?Becauseestuariesactasfilters(过滤器),manypollutantsendupinthem.2.Whatdoesdensitymeaninthispassage?Itmeansthenumberofspeciesperarea.3.Howdoyouestuariesaffectthewaterthatpassesthroughthem?Theyabsorbnutrientsandpollutantsfromwatercominginlandsources,thuscleaningourwater.5.Whyareestuariesimportanttohumanbeings?①Estuariesprovidebothrecreationandeducationforhumanbeings.Peoplecanfish,swimandhavefunonthebeach.Scientistsandstudentshaveendlessopportunitiestostudyavarietyoflifeinthehabitat.②Estuariesalsocontributetotheeconomythroughtourismandfishing.1.Thepassagemainlytellsus______.A.howtheestuariesformnaturallyB.whysomanycitiesandtownsarebuiltaroundestuariesC.thelivingthingsintheestuariesD.thecharactersofestuariesandtheirgreateffectonlivingthingsandhumanbeings2.Theword“habitat”inPara.2ofthepassageprobablymeans______.A.生物B.栖息地C.密度D.界线3.It’snotstatedbutwecaninferfromPassagethat______.A.estuariesarethehomesofthousandsofanimalsandplantsB.estuariesaremoreorlesspollutedbythewatercomingfrominlandsourcesatpresentC.theyplayanimportantpartintheworld’sclimateD.estuariesprovidebothrecreationandeducationforhumanbeings2.Anestuaryisthebodyofwaterwherearivermeetstheocean.河口是河流和海洋交汇的地方。ThisistheplacewhereIwasborn.这就是我出生的地方。Shewouldliketoliveinacountrywhereitneversnows.她喜欢住在不下雪的国家。定语从句where还可以引导地点状语从句、表语从句、宾语从句、主语从句等。Iwonderwheretheywilltakeus.我想知道他们要带我们去哪儿。ThisiswhereIlive.这就是我住的地方。SitwhereIcanseeyou.坐在我能看见你的地方。Whereweshouldgohasn’tbeendecidedyet.我们去哪儿还没定下来。宾语从句表语从句地点状语从句主语从句•Thismixingoffreshandsaltwatercreatesauniqueenvironmentfilledwithlifeofallkinds—azonebetweenthelandandsea.淡水和盐水的混合创造了一个富含各种生物的奇特的环境——陆地向海洋的过渡区域。1.azonebetweenthelandandsea,是前面auniqueenvironment的同位语。2.句中filledwithlifeofallkinds是过去分词短语作后置定语，相当于whichisfilledwithlifeofallkinds。•5.it,one,that,•one可以替代前面出现过的可数名词(人/物),一般是同名异物,其复数形式是ones.•--Whichisyourjacket?--Thewhiteone.•it也可以代替前面出现过的单数名词,指特定对象,一般是同名同物.•---Doyouwantthisbox?---Yes,Iwantit.•that通常用来替代不可数名词,具有特定意义.•ThepopulationofChinaislargerthanthatofJapan.Ex:•Thecostofoilislessthan________ofgas.•Doyouwantthepan?Yes,Iwant_____.•Hegavemethreeapples,onered______andtwogreen______.•Doyouwantapan?Yes,Iwant_____.thatitoneoneones•7.Tidesprovideenergyfortheecosystems,butestuariesareprotectedfromwavesandstormsbyislands,mudorsand.•海潮为生态系统提供能量，河口则由于受到岛屿和泥沙的保护而免受海浪和风暴的影响。•providesb.withsth.•providesth.forsb为…提供…•Thecompanyprovidedtheemployeeswithacellphone.•Parentsprovidefoodandclothesfortheirchildren.•offersb.sth.;offersth.tosb.;offertodosth.;supplysb.withsth.;supplysth.to(for)sb.•Mostofusenjoyfishing,swimmingandhavingfunonthebeach,andscientistsandstudentshaveendlessopportunitiestostudyavarietyoflifeinthehabitat.我们中很多人喜欢钓鱼，游泳，在海岸上玩耍。科学家和学生有无穷无尽的机会去研究那里的各种各样的生物。1.fishing,swimming,havingfun同为enjoy的宾语。2.tostudyavarietyoflifeinthehabitat是不定式作后置定语。•8.Estuariesalsocontributetotheeconomythroughtourismandfishing.通过旅游业和捕鱼业河口还对经济作出了巨大的贡献。contributeto有助于,促成；捐给，•适度的运动有益健康。•Aproperamountofexercisecontributestogoodhealth.•她在这次讨论中提出了很多好的意见。•Shecontributedalotofgoodideastothediscussion.