2023年英語作文介紹一下美國英語作文介紹一下美國1

TheUnitedStatesofAmerica,alsoknownastheUnitedStates,theU.S.,theU.S.A.,andAmerica,isacountryinNorthAmericathatshareslandborderswithCanadaandMexico,andaseaborderwithRussia.ExtendingfromtheAtlanticOceantothePacificOcean,theUnitedStatesisafederalrepublic,withitscapitalinWashington,D.C.

Thepresent-daycontinentalUnitedStateshasbeeninhabitedforatleast15,000yearsbyindigenoustribes.[1]AfterEuropeanexplorationandsettlementinthe16thcentury,theEnglishestablishedtheirowncolonies—andgainedcontrolofothersthathadbeenbegunbyotherEuropeannations—intheeasternportionofthecontinentinthe17thandearly18thcenturies.On4July1776,atwarwithBritainoverfairgovernance,thirteenofthesecoloniesdeclaredtheirindependence.In1783,thewarendedinBritishacceptanceofthenewnation.Sincethen,thecountryhasmorethanquadrupledinsize:itnowconsistsof50statesandonefederaldistrict;italsohasnumerousoverseasterritories.

Atover3.7millionsquaremiles(over9.5millionkm),theU.S.isthethirdorfourthlargestcountrybytotalarea,dependingonwhetherthedisputedareasofChinaareincluded.Itistheworld'sthirdmostpopulousnation,withnearly300millionpeople.

TheUnitedStateshasmaintainedaliberaldemocraticpoliticalsystemsinceitadopteditsArticlesofConfederationon1March1781andtheConstitution,theArticles'replacement,on17September1787.Americanmilitary,economic,cultural,andpoliticalinfluenceincreasedthroughoutthe20thcentury;withthecollapseoftheSovietUnionattheendoftheColdWar,thenationemergedastheworld'ssoleremainingsuperpower.[2]Today,itplaysamajorroleinworldaffairs.

TheearliestknownuseofthenameAmericaisfrom1507,whenaglobeandalargemapcreatedbytheGermancartographerMartinWaldseemüllerinSaint-Die-des-VosgesdescribedthecombinedcontinentsofNorthandSouthAmerica.Althoughtheoriginofthenameisuncertain[3],themostwidelyheldbeliefisthatexpressedinanaccompanyingbook,CosmographiaeIntroductio,whichexplainsitasafeminizedversionoftheLatinnameofItalianexplorerAmerigoVespucci(AmericusVespucius);inLatin,theothercontinents'nameswereallfeminine.Vespuccitheorized,correctly,thatChristopherColumbus,onreachingislandsintheCaribbeanSeain1492,hadcomenottoIndiabuttoaNewWorld.

TheAmericaswerealsoknownasColumbia,afterColumbus,promptingthenameDistrictofColumbiaforthelandsetasideastheU.S.capital.ColumbiaremainedapopularnamefortheUnitedStatesuntiltheearly20thcentury,whenitfellintorelativedisuse;butitisstillusedpoeticallyandappearsinvariousnamesandtitles.AfemalepersonificationofthecountryisalsocalledColumbia;sheissimilartoBritannia.[4][5][6][7]ColumbusDay,aholidayintheU.S.andothercountriesintheAmericascommemoratingColumbus'October1492landing.

ThetermunitedStatesofAmericawasfirstusedofficiallyintheDeclarationofIndependence,adoptedon4July1776.On15November1777,theSecondContinentalCongreadoptedtheArticlesofConfederation,thefirstofwhichstatedTheStileofthisConfederacyshallbe'TheUnitedStatesofAmerica.'

TheadjectivalanddemonymicformsfortheUnitedStatesareAmerican,apointofcontroversyamongsome.

美利堅合眾國,也被稱為美國,美國,美國美國,是一個在北美國家,陸地邊界與加拿大和墨西哥,和一個與俄羅斯的海上邊界。從大西洋到太平洋,美國是一個聯(lián)邦共和國,為首都的華盛頓特區(qū)

當今美國大陸已經(jīng)居住了至少15000年的土著部落。[1]在16世紀歐洲的探究和殖民之后,英國建立了自己的殖民地和限制他人所起先較之其他歐洲大陸的東部地區(qū)在17和18世紀早期。1776年7月4日,在斗爭與英國公允治理,十三個殖民地宣布獨立。在1783年斗爭結束后在英國接受的新國家。自那以來,中國已超過四倍大小:現(xiàn)在由50個州和一個聯(lián)邦地區(qū);它還有眾多的海外領土。

超過370萬平方英里(370萬多公里),美國是第三或第四大的國家,面積,取決于中國的爭議地區(qū)。它是世界上第三人口最多的國家,有近3億人。

美國始終保持著自由民主政治體系的文章,因為它采納了聯(lián)盟1781年3月1日,憲法,文章的更換,1787年9月17日。美國的軍事、經(jīng)濟、文化和政治影響力增加貫穿整個20世紀,隨著蘇聯(lián)解體,冷戰(zhàn)結束,美國成為這個世界剩下的唯一超級大國。今日[2],它在世界事務中扮演著重要的角色。

最早運用的名稱美國從1507年起先,當一個截止閥和一個大地圖創(chuàng)建的瓦爾德澤米勒所繪制德國地理學家馬丁在Saint-Die-des-Vosges描述了北美和南美大陸。雖然名字的起源是不確定的[3],最普遍的信仰是表示在一本書,CosmographiaeIntroductio,這也說明了它作為一個女性化版本的拉丁名字的意大利探險家阿美利哥韋斯普奇(絨毛Vespucius);在拉丁語中,其他大陸的名字都是女性。韋斯普奇的理論正確,克里斯托弗·哥倫布到達1492年在加勒比海島嶼,已經(jīng)不是印度,而是一個“新的世界”。

美洲也被稱為哥倫比亞,在哥倫布,促使土地的名字特區(qū)留出隨著美國資本。美國哥倫比亞高校仍舊是一個受歡迎的名字,直到20世紀初,當它落入相對廢棄;但它仍舊是用詩意和出現(xiàn)在不同的名字和頭銜。國家也被稱為哥倫比亞的女性化身,她是類似于不列顛。哥倫布日,假期在美國和其他國家在美洲紀念哥倫布1492年10月著陸。

“美利堅合眾國”這個詞第一次被運用在《獨立宣言》正式通過1776年7月4日。1777年11月15日,其次屆大陸Congreadopted聯(lián)盟的`文章,第一個表示“本聯(lián)盟的階梯美利堅合眾國。”

形容詞的和demonymic形式對美國是美國人,在一些爭議。

英語作文介紹一下美國2

Basedonhistoricaldocuments,modernsurveyandstatistics,aswellastheresultofpredecessorstudies,thetrendandmainprocessofforestdynamicsarerecognized.TheforestareaandforestcoverageratesforeachprovinceofChinafrom1700to1949arees-timatedbackwardbyevery50years.LinkingtheresultwithmodernNationalForestInventorydata,thespatial-temporaldynamicsofChineseforestinrecent300years(AD1700–1998)isquantitativelyanalyzed.Thestudyshowsthatinrecent300years,theforestareaincurrentterritoryofChinahasdeclinedby0.95×108hm2(or9.2%ofthecoveragerate)intotal,withatrendofdecreaseandrecovery.Beforethe1960s,therewasatrendofacceleratedde-scending.Theforestareawasreducedby1.66×108hm2(or17%ofthecoveragerate)in260years.Whileafterthe1960s,therehasbeenarapidincrease.Theforestareaincreasedby0.7×108hm2(or8%ofthecoveragerate)in40years.Thestudyalsoshowsthatthereisasignificantspatialdifferenceinthedynamicsofforest.Theamplitudesofincreasingandde-creasinginwesternChinaarebothsmallerthantheonesineasternChina.Duringtherapiddecliningperiodfrom1700to1949,themostseriousdecreaseappearedintheNortheast,theSouthwestandtheSoutheast,wherethecoveragerateinmostprovincesdroppedover20%.InHeilongjiangProvince,thecoverageratedroppedby50%.InJilinProvince,itdroppedby36%.InSichuanProvinceandChongqingMunicipality,itdroppedby42%.InYunnanProv-ince,itdroppedby35%.Duringtherecoveryperiod1949–1998,thewesternprovinces,mu-nicipalityandautonomousregions,includingNingxia,Gansu,InnerMongolia,Si-chuan–Chongqing,Yunnan,Tibet,XinjiangandQinghai,etc,theincreaseratesareallbelow5%,whiletheeasternprovinces,municipalityandautonomousregions(exceptHeilongjiang,Hubei,Jiangsu–Shanghai)haveachievedanincreaseover5%,amongwhichtheGuang-dong–Hainan,Guangxi,Anhui,Beijing–Tianjin–Hebei,Shandong,