初中英语词性变化归纳

sun—sunnytourist sun—sunnytourist touristy游客多的chemistry/chemist---chemical化学/化学家，药剂师business-busysalt盐---salty咸的shine---shiny发亮的silk丝绸-silky丝绸般的sleep---sleepy昏昏欲睡的taste口味，品味 tasty甜的noise-noisy.名词+ed或动词+ed/dbalance-balanced平衡的spot斑点，地点----spotted有斑点的talent——talented有关赋的organized有组织的distusted厌恶的offended生气的crowded拥挤的polluted被污染的pleased高兴的.名词+ful/lessmeaning—meaningful有意义的care—careful/careless小心的；粗心的help---helpful/helplesshope--hopelesshome—homeless无家可归的colour---colourfulpain疼痛---painful痛苦的use---useless/usefulthank—thankful充满感激的peace和平----peaceful平静的，宁静的playful顽皮的，爱玩耍的Value-valueless.名词+ablecomfort---comfortablereason-reasonablebelieve--believableknowledge-knowledgeablesuit一套——suitable合适的value-valuable价值初中英语词性变化归纳及练习、动词变名词v+ment结尾achieve---achievement成就advertise---advertisement//advertisingagree—(in)agreementargue---argument争吵commit奉献一commitmentdevelop---developmentdisgree—disagreementexperiment实验，试验equip装备---equipment装备，器材govern统治—government政府manage-management;经营管理manger经理treat-treatment对待，治疗adjust调整---adjustable可调整的apartment公寓amusement娱乐compliment称赞，恭维department局，部V+tion结尾attract吸弓I-attraction有吸引力的事或人conclude—conclusion结论compete—competition竞争，比赛discuss—discussion讨论educate——educationdecide——decisiondescribe—description描写，描绘express表达----expression词语；表达方式graduate毕业—graduationoperate操作，动手术—operationorganize——organizationinstruct—instruction指导，介绍invent—inventor/inventioninvite—invitationinspire---inspiration灵感，鼓舞人心的---pollute----pollution污染predict---prediction预言pronounce---pronunciationresolve决心，解决----resolution决心permit允许——permissionsuggest建议，暗示--suggestionsoke解决——solution解决方法V+ance结尾appear—appearance夕卜貌,出现perform----performance演出V+ing结尾bathe洗澡---bathingend结束----ending结尾，结局train训练---trainingmean----meaning意义say——saying谚语V+其他beg(乞讨)—beggar乞丐behave行为，举止----behaviorknow知道---knowledge知识fly—flight飞行，航班heat加热---heat热量hit撞击——hit轰动一时的人或物，碰撞mix混合——mixture混合物press按，压—pressure压力sit——seat座位succeed--successtour在-----旅游，在-----作巡回演出直接+地点tourist游客breathe-breath二、名词变形容词1名词+yAnger生气——angryhunger-hungryfog—foggy后雾的fur----furry毛皮的guilt罪恶---guilty内疚的health---healthyluck---luckycloud---cloudywind—windyrain---rainysnow---snowy((v--adj)accept--acceptable接受believe--believable.名词+ousenormous巨大的danger—dangerousmystery神秘——mysterious神秘的.ce变tconfidence----confidentdifference---differentimportance--Importantdependence--dependent.al结尾medicine药----medical医学的music---musicalnature-natural自然的person-personal私人的nation—national国家的internation--international国际化的education-educational有教育意义的tradition----traditional传统的origin起源---original新颖的；独创的.名词+lyfriend—friendlylive-lively活跃的，有生气的love—lovely可爱的.+en结尾wood—wooden木制的wool—woolen羊毛的gold--golden.+nessill--illnessSickness--sickfairness--fairsadness--sad10.其他energy精力---energeticfool傻子一foolish愚蠢的freedom自由一free空的，免费的wisdom--wiseheight高度一highwidth--widelong--lengthlove—loving慈爱的death-deadpleasure---pleasant/pleasedpopularity流行性—popularpride---proudscientist----scientific科学的三、方位的词表达名词一形容词East—easternWest—westernSouth—southernNorth-northernInthewestofChinaInthewesternpartofChina四、四大洲名词-----形容词Asia亚洲---AsianAfrica非洲——AfricanEurope欧洲——EuropeanAmerica美洲——American五、形容词变副词.形容词+lybad—badlybright—brightly明亮地casual—casually随意地clear—clearly清楚地complete—completely完全correct---correctly正确地final--finallyfortunate—fortunately幸运地general—generally一般来讲loud—loudlyparticular特殊的，独特的—particularlypolite—politelyproper合适的-,恰当的---properlymainmainly主要地most多数——mostly多半，大多数normal---normally正常地quick—quicklyquiet—quietly轻轻地，安静地real—reallyrecent最近的----recently最近；近来hard难的；努力地---hardly几军不late迟的一lately最近；山来sad--sadlyslow---slowlyspecial—specially专「1,特殊地specific---specifically特定地，明确地strong—strongly电决地，强烈地sudden—suddenly突然usual—usually.以le结尾的去e+ycomfortable---comfortablygentle—gentlypossible---possiblysimple----simply仅仅；只；简单地terrible---terribly.辅音字母+y变ilyeasy—easilyheavy—heavilyhappy--happily.特殊good—well好地true—truly六、名词---歹容词J一副词beauty美，美人—beautiful—beautifullycare—careful-carefullycare—careless—carelesslydifference---different---differentlyhappiness—happy—happilyhunger—hungry--hungrilyhealth—healthy—healthilyluck—lucky—luckilynoise—noisy—noisilypride—proud—proudly骄傲地sadness-sad—sadlysafety安全；安全的地方sadness-sad—sadlysafety安全；安全的地方一safe—safelysilence—silent---silently默默地success—successful—successfullytruth—true—trulyunluck—unlucky—unluckilywonder奇迹—wonderful—wonderfully七、既是形容词又是副词earlygetupearly;anearlytrainlatebelateforclasscomelateforschooldeepdivedeepintotheseaaholedeeplargehighjumphigh;ahighmountainhardahardquestion；ahardstoneworkhard/studyhardrainhardlong IttakestoolongIttakesalongtimefar jumpfarMyhomeisfarfromschoolstraightastraightlinegostraightalonghere中考英语词性转化300题一提高篇讲义I.CompletethesentenceswiththegivenwordsintheirproperformsWouldyoumindmakingalittleless?Theyarehavingameetingatthemoment.(noisy)TheSmithsliveonthefloorofthehighrise.(nine)AllthegreatarerespectedlS敬)bytheworld.(invent)Mypetisacat.Sheisverylovely.tbestudents.(main)meetingmathslastweek.(surprised)Illdomyhomeworkmorenexttime.(care)Whenyoustudyaforeignlanguage,itimportanttomakeagood.(begin)Everyoneknowssuchkindofbooksistochildren.Theyshouldnsoldatanybookstore.(harm)Inthepastpunishment惩罚)wasdecidedbytheuniversity.Thestudenthadnobuttoacceptit.(choose)OurteachertoldusthestoryIhadeverheardatyesterday'sclass(sad)TheLessonisverydifficultbutveryimportant.Youmustlearnitbyheart.(twelve)Theylookedveryintheidea.(interest)Aftertheygotonthebus,theyfoundtwo.(sit)Helptothefish,everyone.(you)Whatwehavehadisjustpartofthetruth.Weshouldtrytogetinformationaboutit.(far)Heseemedvery.HegotaDintheEnglishtest.(happy)17.Beforeyoustartthiswork,youshouldtrytorealizeits.(important)s18.March8isDay.(woman)Thisbookbelongstoyou.Whereis?(me)ThevisitorsareDoyouknowabouttheofthebook?(write)Canyoushowmeyourofcoins?(collect)Tomy,IgotfullmarksforInthisnewhousingestatetherestandalotofhighandmagnificent.(build)Inwinter,mostoftheriversandlakesare.Itbecomesaworldofice.(freeze)Thenheslowlywalkedthehouse.(pass)DoyouknowwhoistheoftheEnglishcontest?(win)Peterisvery.I'msurehewillcometotakecareofyourbabywhenhe'saskedto.(help)TheYangtzeRiveristhelongestriverintheworld.(three)(male)tomeetallofyouhere.(please)Nowmoreandmoregardensarebeingbuiltinour.(neighbour)It'sveryimportantufoitolearnEnglish.(good)Bothourteacherandmymotheraresatisfiedwithmy.(honest)34.OliverTwistatethecake.(hungry)Ofalltheboys,LiMingstudies.(hard)Weareallpleasedtohearthatthewentonverywell.(operate)Thechildreninthiskindergartenhavebeentrainedtotakecareofthoughtheyareonlysixyearsold.(they)38.Couldyoutellmewhowillgiveusaonchildren'seducation?(speak)Thesemodernmachineswork.(automatic)ThiscartoonfilmisthantheoneIsawlastSaturday.(fun)W川youpleasetellmehowmuchtheis?(post)ThetwinsistersusedtobeinHollywood.(act)Actionsspeakmorethanwords.(loud)IamaboutmyschoolworkbecauseIhaven'tworkedhardthisterm.(worry)Yourpetdogissothatallofusliketoplaywithit.(love)Ithasbeensnowingforawholeday.(heavy)Wehavebeentoldtheofthecase.(true)Haveyoumadeyouryet?(decide)PeoplefromItalyarecalled.(Italy)Iwherehecomesfrom.(wonderful)TheweatherinAprilis,soyou'dbettertakemoreclotheswithyou.(change)Ferriescomeandgoontheriverasasboats.(quick)Listen,everybody,wewillmeetattheofthecinemaat4pm.(enter)Youcannoteatsomuchfastfood,becauseitis.(health)Itisreportedthatthreehavebeenputintoprison.(Canada)Timefliesandneverreturns.(swift)Wesawherrunningthestreetjustnow.(cross)DoEnglishpeopleshakehandsasoftenas?(Germany)Weallknowthatthere'snothingonthemoon.(live)Inordertomakethetripforhischildren,Mr.Greenkeptthenameofthedestination(目白地)asecret.(excite)AteamfromChinawillarriveinAmericanextweek.(medicine)ThismorningIlostmyhandbagandthisafternoonIfelloffmybikeandbrokemyleg.Ithinkitisanday.(luck)Manystudentsarenotabletopaytheircollege.(expensive)Britishpeopleeatalargenumberof.(potato)Sheseemsangirl.(honesty)Wetriedallsortsof,buttheywerealluseless.(medical)Thedigital(数码)cameraisoneoftheofthemodernscience.(wonderfully)Iwouldn'tdobusinesswithsuchaman.(fool).(relax)7.Howoftendoyoutakeyoursontothe.(relax)7.Howoftendoyoutakeyoursontothe Palace?(child)Inthe century,scienceisdevelopingveryfast.(twenty-one)Tobe,Ithinkyoudidn 'taswellasJack.(honesty)Doyouknowiftheheadmistressoftheschoolisa teacher?(chemical)Thepatientisgetting .The doctorswillusenewmedicineforhim.(ill)WhatcanIdoforyou?”theasked.Carllooksmuchthanbefore.(health)IwastomeetJaneinaforeigncountry.(surprise)Themotherwastothebravemanwhohadsavedherson.(thank)Ihappenedtomeetagroupofonmywayhomeyesterday.(France)Thelittleboycanrunamarathoninthanthreehours.(little)Iwastoldthatmyclassteacher'sdaughterwouldleaveschoolthisJuly.(second)It'satohaveapicnicwithallthefamilymembers.(please)Thelostcalculatorhasbeenreturnedtoits.(own)Besuretoletmeknowwheneveryouarein.(dangerous)Thecompletion发成)ofthebigbridgemadeeveryoneofusandhappy.(exciting)The__isnotsogoodasweexpected.(perform)Whatadayitistoday!Shallwegotohaveapicnicinthecountryside?(sun)Thetallisoneofmyfatherbestfriends.(art)Haveyoudecidedtotaketheheadmaster's?(advise)Even,helosthisjob.(bad)Pleaseanswerthequestions.(follow)Manypeoplebecameafterthefire.(home)Theoftherestaurantisquitegood.(serve)speaking,thecomputerhasbecomeanimportantpartofourlife.(general)Ithoughtthewasquitedullatyesterday'sparty.(recite)Theoftheriverisstillasecret.(long)Nooneknewwhythebabykept.(cry)Lifetodayisbecomingharderandbusier,soeveryoneshouldhavehisownwayofIntohardwork,weneedsomegoodwaystosucceed.(add)Iamfondoffiction.(scientist)It's__ofyoutomakesuchadecision.(wisdom)95sQuiteafewhouseshavebeenbuiltforthetouristsaroundthelake.(wood)Thepassengerplanelandedatlastafterflyinginthestormforaboutonehour.(safe)MyfamilyhavebeentoBeijingtoclimbtheGreatWall.(two)Oneshouldn'tgiveupeasilyifheisdeterminedto.(success)Laura'shusbandworksasainabank.(message)Theharderyouwork;theprogressyou'llmake.(great)Itwillrainthisafternoon.(impossible)Peoplefromdifferentcometogethertovisitthefamousmuseum.(country)Hecandoeverythingonown.(he)Abouttworideinthebuswilltakeyoutotheseaside.(hour)Iwouldliketobuythreekilosof.(tomato)Whatnice!Let'sputthemontwallsofthemeetingroom.(paint)(library)foodissoldinlotsofsupermarkets.(freeze)Wehaveplentyofafterclass.(active)Adoctor'dutyistosavepeople's.(life)ShelivesinBritainbuthasFrench.(national)Inwinter,Britishpeopleuseinsteadofair-conditioners.(heat)It'nottowearyourschooluniformonFriday.(need)Yourhomeworktodayistoallthesenewwords.(memory)Thisisandoor.Youneedn'tpressanybutton.(automatically)Hardisveryimportanttoeveryplayerwhowantstobesuccessfulinthematch..(train)Shetookthetwoo'clocktoChicagojustnow.(fly)Inweather,thewaterisalwayscoveredwithice.(freeze)Theoldladywastootosayaword.(frighten)Itwastoodarkforustoseeanything.(clear)Mymumdoesonceaweek.(shop)GeorgeStephensonbecamefamousinhis.(twenty)Weallfoundthefilmvery.(interest)Thatgirl'_shairattractedallofus.(gold),Theweatherreportsays,"It__stoday.”(cloud)Asweenteredthegarden,wesawalittlegirlonthegrassinthesun.(lie)It'greattoplaychessontheinternet.(funny)Aftershowingthestudentshowtodothisexperiment,theteachertoldthemthathadbeenachange.(physics)LinTaoisoneofthemostboysintheclass,becausehenevergetstoschoolontime.(lazy)5.,wewonthebasketballmatchwithoutdifficulty.(luck)Themonkeylookedatinthemirror.(it)Iwonderedwhetherthebagwasthat.(lady)Theshoppingcentreisalwaysofcustomersatweekends.(fill)Doyouknowtheofthenearestpolicestation?(located)Ihelpedtheoldmantoshowmy.(kind)ismoreimportantthanwealth.(healthy)Nothingisifyousetyourmindtoit.(possible)Thesunisshining.Let'goforapicnic.(bright)Don'thesitatetoaskifyouhaveanywhendoingyourhomework.(difficult)Mymotherisalwaysbusytheclothesintheevening.(wash)Thedoctorswerealwaysbusyoperatingonthesoldierinthefieldhospitalduringthewar.(wound)Lizismuchthanhertwinsister.(thin)Pleasewritedowntheideaofthistext.(mainly)It'surresponsibilitytosavewaterand.(electrical)EnglishhasmorewholearnitasasecondlanguagethanChinese.(speak)Englishisalanguage.Itmakespeoplesintheworldunderstandeachotherbetterthanever.(use)Youhavetorecitewordseverydaytokeepyouractive.(memorize)Althoughheworkedhardest,hegotthemoneyofall.(little)shouldobeythetrafficrule.(drive)Mymotherisahard-working.(business)AbouttwentywillcometovisitourschoolthiscomingSaturday.(Australia)WHOmeansWorldHealth.(organize)Ifeltsorryforhavingmissedsuchawonderfulfootballmatch.(truth)HeapologizedtoMikeforthefromhisbirthdayparty.(absent)Weshouldthrowrubbishintolitterbinssoasnottothecity.(pollution)Ourlanguagelabisontheflooroftheclassroombuilding.(four)“Stophem!Theyare,"anoldmanshouted.(thief)Afteralong,theygotthesolutiontotheproblem.(discuss)Wehopeourcountrywillbecomemoreandmore.(power)Parisisthecapitalof,isn'tit?Theladysoldfiveofbreadtothelittleboyandwishedhimgoodluck.(loaf)Tomisbetteratthananyoneelseintheclass.(swim)Maryplayingthepianofortwohourseveryday.(practice)YaoMingisafamousbasketballplayer.(profession)Mymotherisverythoughsheisonlyforty.(forget)doesalotofharmtoothersaswellasthesmokerhimself.(smoke)AmericanpeopleusuallyhavetheturkeyatChristmas.(tradition)Thelightsuddenlywentout.(electricity)WhocantellmetheoftheHimalaya?(high)一Whenautumncomes,fallofftrees.Thegroundisalwayscoveredwiththem.(leaf)Theseoldcansarekeptfor.(recycle)ManyarewaitingforthefamousTheroomissodirtythatalotofTheroomissodirtythatalotof inthecanbeseenrunninghereandthere.(mouse)Whichdoyouwanttodo,gointobusinessorbecomea?(fire)dancerattheairport.(report)Mary'sbrotherworksasarestaurant.(wait)Themansavedthelittlegirlfromthefireandtookherto.(safe)AnAmericansaidlastweekthattherewasenoughwaterforlifeonMars.(science)TheForbiddenCitywillbeinthefollowingyears.(build)NeverbeafraidoffaceifyouwanttomakeprogressinyourspokenEnglish.(lose)Johnfoundhisformerfriendswereastohimasbefore.(friend)Nooneelsecandancethanthegirlinred.(beautiful)Couldyoutellthebetweenthethreesisters?(different)Taxiaredevelopingveryfastinmoderncities.(serve)Lastnightonmywayhome,Isawabankwithmyowneyes.(rob)You'dbetternotswimintheriver.Thewaterhasbeenpolluted.(serious)Ihavereceivedantoherbirthdayparty.(invite)Themoreyoupractise,themoreyoucanspeakEnglish.(fluent)Thewindisblowing.It'therighttimetoflykites.(gentle)Wevetoworkoutatotheproblem.(solve)Chinesewillbeusedintheworldfromnowon.(wide)Afewfriendsofwillcometoourdinnerpartytonight.(we)Thegovernmentwilltakeactiontoimprovetheinthepoorareas.(educational)ManypeopleinChinaarenotfamiliarwithcustoms.(west)Themusicsoundedquitewhilethedancewasnotbeautiful.(wonder)JulyisusuallythemonthinShanghai.(hot)Idontthinkitagoodidea.Doyouwanttolistentomy?(suggest)Whathesaidusalot.Wewonderedwhathadhappenedtohim.(surprise)Nowadayscanbeseenhereandthere.(foreign)Hisgrandparentshavebeenforovertenyears,buthe'llneverforgetthedayswiththemtogether.(death)Thesongwassothatshedidn'tnoticethetelephonering.(enjoy)Withtheofe-booktechnology,probablyane-booklibrarywillappear.(develop)Ithinkthesuccesswilldependonyournotyourmoney.(wise)Theywillhavesomevisitstoothercities.(education)Everyoneshouldtakeanpartinsportsevents.(activity)IhavebeentoNanjingonceandthisismytimetoseetheYangtzeRiverthere.(two)Mathsismysubject.(favor)OnthewayIsawanoldmanbesidetheroad.(sit)Heusedtobea.(farm)That'sforthegirltobelatetoday.Sheisalwaysthefirsttogettoschool.(usually)Howmanywomenarethereintherestaurant?(cooker)Asthegoes,“Nopains,nogains”.(say)Eatingtoomanysweetsisbadfor.(tooth)Hisaunttakesgoodofhimwhenhismotherisaway.(carefully)Myuncleisatravelagent.Hisjobistoserve.(tour)Sorry,Ican'tlendmytapetoyou.(record)Thestreethasbeenbytheworkers.(wide)It'srudetolookataperson.(straight)Busiestmenfindthetime.(much)FewcouldspeakChineseinthepast.(English)Thereisnoshort-cutto.(succeed)Computerisanamazingourlife?(invent)ManycometoDisneylandeveryday.(visit)hearrivedthereontime.(final)Thereporterwenttotheseawithseveraltolookforthelostboat.(fish)Shehasgainsmuchbecauseshekeepseatingbutneverexercises.(weigh)She'sbusywritingalettertoafriendofinherstudy.(she)TherearemanyplacesofinterestinShanghai.(history)Theythewomanintobuyingallthedressesintheshop.(foolish)Ourteachertoldusthatitwasachange.(chemistry)It'simportantforastudenttotelltheafterhedoessomethingwrong.(true)Thedollwasthepresentfrommyauntieonmybirthday.(five)Thesungivesuslightand.(hot)Schoolwillbeoverinafewtime.(month)Icantfindmywallet.Ithas!(appear)Mygrandfatherkeepsingoodthoughheovereighty.(healthy)TheAtlanticisthesecondoceanintheworld.(big)Mr.Markoisoneoftheofthatfactory.(engine)It'stenwalkfromhere.Youneedn'ttakeabus.(minute)ManyyearsagothiskindofTVsetwasvery.(expense)Ihavemadeupmymindtostudyhard,becauseourteacheralwaystellsusthatispower.(know)NooneknowswhetherBinLadenisstillornot.(live)Themanintheprisonislookingforwardtohaving.(free)Wetravelledtoabeautifulandquietvillage.Therewespentaday.(pleased)MrBlackisasingerthirty.(age)Whatistheoftheword?(mean)Thelittlegirlsaidtothestrangeman.(soft)handsisakindofcustominsomecountries.(shake)YoungboysenjoywatchingfootballonTV.(match)Jackytoldusanstorythateverybodylaughedhappily.(amusement)Weweresurprisedatthenewsofhis.(die)Thanksforme.I'lldomybe：(choice)JiangWenisoneofthemostfamousinChina.(act)Bobastorytoexplainwhyhewaslateforschool.(inventor)Ofalltheboys,Johnrunsthemost.(slow)Thisironballismuchthanthatone.(heavy)I'dliketohaveatalkwiththeofthishotel.(manage)It'scoldtonight.(terrible)Therearemanyvisitingthemuseum.(Japan)OnChristmasEve,theparkisalwaysfullofchildren.(amuse)NanjingRoadisinthecentreofShanghai.(locate)It'smuchtoswimwithyourfriendthantoswimalone.(safe)Takecare!Thevasecanbebroken.(easy)Thereusedtobeagreatbetweenthetwofamilies.(friend)I'mafraidwecannotgofishingtoday.It'squiteoutside.(wind)Theismadeofeggsandflour.(mix)I'mpooratandgeography.(historical)It'sforthechildrentoplaywithfire.(danger)Shanghaihasatanamazingspeedtheseyears.(development)Joeisoneofmy.(neighborhood)Wemusttraineverydayinordertokeepstrong.(we)OfalltheChristmascards,isthenicest.(Rose)I'mtootiredtogoastep.(far)Theriveristwentydeep.(foot)Everymonthyoucangetthreethousandyuanat.(little)Let'scutthisloafofbreadinto.(half)Hissisterisonlyoneyearolderthanhe.(old)LiMingisafriendofmy.(cousin)Heforourcountryinthebattleandwewillalwaysrememberhim.(death)Boysarequiet.(noise)285.You'dbettertakeataxiinsteadofthere.(walk)Theyaresittingintheroom.(quiet)Whoknowswhattheword?(mean)MissLitaughtEnglishlastterm.(we)Nobodywillbelieveyousinceyouareso.(honest)Yougotthefirstprize!(real)MrSmithspenthisbirthdaytheotherday.(forty)cannotcalculateasfastascomputers.(human)DaShanisfrombuthecanspeakverygoodChinese.(Canadian)294.Itwassnowingoutside.(hard)Airmakesusfeelsick.(pollute)Look!Therearesomanyhere.Whydoyoutakethesmallone?(toy)Afterhearingthesewords,hisfaceturnedeven.(red)Howmanylessonsdoyouhaveeveryweek?(physical)TheysentafewletterstoJapanlastFriday.(busy)Theywerewellatafriend'shouse.(service)Keys:1.erested12.seats13.yourself14.further15.frightening16.unhappy17.importance18.Women's19.mine20.mainly21.writer22.collection23.surprise24.building25.frozen26.past27.winner28.helpful29.third30.Pleased31.neighborhood32.well33.honesty34.hungrily35.hardest36.operation37.themselves38.speech39.automatically40.funnier41.poster42.actresses43.loudly44.worried45.lovely46.heavily47.truth48.decision49.Italians50.wonder51.changeable52.quickly53.entrance54.unhealthy55.Canadians.56.swiftly57.across58.Germans59.living239271.history272.dangerous273.developed239271.histor