基数词变序数词的规律.docx

基数词变序数词的规律。首先,基数词变序数词的规则是按照字母表顺序,一般而言,以t开头的基数词(three,twenty,twelve等)变成序数词时,要在单词前加上th,例如three变成third,twenty变成twentieth,twelve变成twelfth。其次,以f开头的基数词(four,five,forty,fifty等)变成序数词时,要在单词前加上rst,例如four变成fourth,five变成fifth,forty变成fortieth,fifty变成fiftieth。方法：在英语中，基数词变为序数词的方法是：基词加上一个表示“第”的词缀”-th”，比如“first">"first-th"->"first-th"o如果基词是1-12的数字，则加-st,比如“twelfth”比如“first”->“first-th”->"first-th"o 如果基词是1-12的数字，则加-st,比如“twelfth”>“twelfth-st”>“twelfth-st”。 如果基词是13-19的数字,则加-teen,ktft11"thirteenth"->"thirteenth-teen"->"thirteenth-teen"o 如果基词是20-90的数字，则加-ty,比如"fortieth"->"fortieth-ty"->"fortiethelfth-st"->"twelfth-st"0 如果基词是13-19的数字，则加-teen,tt11"thirteenth"->"thirteenth-teen"->"thirteenth-teen"o 如果基词是20-90的数字，贝U加-ty,比如“fortieth”->“fortieth-ty”->“fortieth-ty”。 如果基词是I-19的数字，贝!j加-th,tk11"second"->"second-th"->"second-th"o 如果基词是,O,则加“zero"，比如“hundredth”->"hundredth-zero"->"hundredth-zero"0 如果基词是T',则加“first"，比如"ten-ty”。 如果基词是I-19的数字，则加-th,tkl"second"->"second-th"->"second-th"o 如果基词是“0”,则加“zero”，比如“hundredth”->"hundredth-zero*'->"hundredth-zero"« 如果基词是T',则加“first”,比如“tenth”->“tenth-first”->“tenth-first”。 如果基词是"2",则加“SeConC,tt"twelfth"->"twelfth-second"->"twelfth-second"0 如果基词是“3",则加“third“，比如“third”->“third-third”->“thirdth”“tenth-first”->"tenth-first"o 如果基词是"2",则加“second",tt"twelfth"->"twelfth-second"->"twelfth-second"o 如果基词是“3",则加“third”，比如“third”>“third-third”->“third-third”。 如果基词是“4”,贝WlTfourth”,比如"fourth”->"fourth-fourth”>“fourth-fourth”。 如果基词是“5“，则加“fifth”，比如“fifth”->“fifth-fifth”“"fifth-fifth”。 如果基词是-third”。 如果基词是“4”,则加“fourth“，比如“fourth”->“fourth-fourth”->“fourth-fourth”。 如果基词是“5“，则加“fifth"，比如“fifth”->“fifth-fifth”->"fifth-fifth”。 如果基词是“6”,则加“SiXth”，比如“sixth”SiXthTiXth”->“sixth-sixth”。 如果基词是"7",则力口"seventh”,比如"seventh">"seventh-seventh"->"seventh-seventh"o 如果基词是“8“，则加“eighth“，比如“6“，则加“SiXth”，tk"sixth"->"sixth-sixth"->"sixth-sixth 如果基词是"7",则加“seventh"，比如"seventh"->"seventh-seventh"->"seventh-seventh"o 如果基词是"8",则加"eighth”,½11"eighth"->"eighth-eighth"->"eighth-eighth,o 如果基词是“9”,则加“ninth”,½"ninth->"ninth-ninth"->"ninth-ninth"o 如果基词是“1-10”，则加“thefirst”，比如“first”->“thefirst"，eighth"->"eighth-eighth"->"eighth-eighth"o 如果基词是“9",则加“ninth",½11,ninth"->"ninth-ninth"->"ninth-ninth% 如果基词是“1-10“，则加“thefirst"，比如“first”->“thefirst"，"second"->"thesecond","third"->"thethird","fourth"->"thefourth","fifth"->"thefifth","sixth"->"thesixth","seventh"->"theseventh","eighth"->"theeighth","ninth""second"->"thesecond","third"->"thethird","fourth"->"thefourth","fifth'*->"thefi代h“，"sixth"->"thesixth","seventh"->"theseventh","eighth"->"theeighth","ninth"->"theninth'*,"tenth"->"thetenth","eleventh"->"theeleventh","twelfth"->"thetwelfth","thirteenth"->"thethirteenth","fourteenth"->"thefourteenth'1,"fifteenth"->"thefifteenth->"theninth","tenth"->"thetenth","eleventh"->"theeleventh","twelfth"->"thetwelfth","thirteenth"->"thethirteenth","fourteenth"->"thefourteenth","fifteenth"->"thefifteenth","sixteenth"->"thesixteenth","seventeenth"->"theseventeenth","eighteenth"->"theeighteenth","nineteenth"->"thenineteenth","twentieth"->"thetwentieth","thirtieth"->"thethirtieth",","sixteenth"->"thesixteenth","seventeenth"->"theseventeenth","eighteenth"->"theeighteenth","nineteenth"->"thenineteenth","twentieth"->"thetwentieth","thirtieth"->"thethirtieth","fourtieth"->"thefourtieth","fiftieth"->"thefiftieth","sixtieth"->"thesixtieth","seventieth"->',theseventieth","eightieth"->"theeightieth","ninetieth"->"theninetieth","ahundred"fourtieth"->"thefourtieth","fiftieth"->"thefiftieth","sixtieth"->"thesixtieth","seventieth"->"theseventieth","eightieth"->"theeightieth","ninetieth"->"theninetieth","ahundredth"->"thefirsthundredth"o基数词在变为序数词时，规则如下：1.1-10的基数词与序数词在拼写上保持一致；2.11-19的基数词在词尾加th；3.20-90的基数词，词尾加"ieth"->"the第20th",但是"twentieth"->"thetwentieth"->"thefirsthundredth基数词在变为序数词时，规则如下：1.1-10的基数词与序数词在拼写上保持一致；1.11- 19的基数词在词尾加th；3 .20-90的基数词,词尾加"ieth"->"the第20th",但是"twentieth"->"thetwentieth"；4 .百位以上的基数词在词尾加"ousth"->"thefirstthousandth”,但是,'tenthousand"->"thetenthousandth"；5 .字母w,y,x,ch,sh作为词首的基数词，变为序数词时需要加“th”。注意：IOoo-9999是两位数，变序数词时，十位th”;6 .百位以上的基数词在词尾加"ousth”->"thefirstthousandth",但是"tenthousand"->"thetenthousandth"；7 .字母w,y,x,ch,sh作为词首的基数词，变为序数词时需要加“th”。注意：Iooo-9999是两位数，变序数词时，十位数和个位数需要分开处理：1 .两位数的十位数为基数词的"hundredth"->"thehundredth"；2 .两位数的个位数为基数词的"tenth"->"thetenth"；3 .百位数的基数词保持不变。4 .小数的基数词表示方法：1/2one-half,1/4one-数和个位数需要分开处理：1 .两位数的十位数为基数词的"hundredth"->"thehundredth"；2 .两位数的个位数为基数词的"tenth"->"thetenth"；3 .百位数的基数词保持不变。4 .小数的基数词表示方法：1/2->one-half,1/4->one-quarter,1/8->one-eighth,3/4->three-quarters基数词变序数词的规律：1 .除了"th",在基数词后添加“th”。2 .十位数是"th",在其后面添加W。例：one-hundred->onehundredthone-thousand->onethousandthquarter,1/8->one-eighth,3/4->three-quarters基数词变序数词的规律：1 .除了"th",在基数词后添加“th”。2 .十位数是"th",在其后面添加“th”。例：one-hundred->onehundredthone-thousand->onethousandthtwelve-year->twelfthtwenty-two-year->twenty-secondtwenty-five-hours->twenty-fifththirty-six-day->thirty-sixthhundred-and-thirty-two->hundredthandthirty-secondthousand-and-fifty-four->thtwelve-year->twelfthtwenty-two-year->twenty-secondtwenty-five-hours->twenty-fifththirty-six-day->thirty-sixthhundred-and-thirty-two->hundredthandthirty-secondthousand-and-fifty-four->thousandthandfifty-fourthten-thousand-and-fifty->tenthousandthandfifty-fifthten-million-and-one->ten-milliondoneten-thousand-million-and-one->ten-milliondonefive-hundred-and-one->five-hundredthandonefiveousandthandfifty-fourthten-thousand-and-fifty->tenthousandthandfifty-fifthten-million-and-one->ten-milliondoneten-thousand-million-and-one->ten-milliondonefive-hundred-and-one->five-hundredthandonefive-thousand-and-five->fivethousandthandfifthfive-million-and-five->five-milliondonefive-thousand-million-and-five->five-milliondonetwo-hundred-and-forty-four->twenty-twenty-forthtwo-thousand-and-seven->two-thousand-and-five->fivethousandthandfifthfive-million-and-five->five-milliondonefive-thousand-million-and-five->five-milliondonetwo-hundred-and-forty-four->twenty-twenty-forthtwo-thousand-and-seven->two-thousandseventhtwo-thirds-fifty-six-thirds->two-third-six-thirdtwenty-nine-point-nine->twenty-nine-ninefive-thirty-one->fifty-one-onetwo-sevenths-four->two-seventh-fourone-two->-thousandseventhtwo-thirds-fifty-six-thirds->two-third-six-thirdtwenty-nine-point-nine->twenty-nine-ninefive-thirty-one->fifty-one-onetwo-sevenths-four->two-seventh-fourone-two->one-twofive-eleven->five-elevensix-seven->six-seventen-fifths->ten-fifthfive-twelfths->five-twelfthfour-ninths->four-ninthone-ninth->one-ninthtwo-ninths->one-twofive-eleven->five-elevensix-seven->six-seventen-fifths->ten-fifthfive-twelfths->five-twelfthfour-ninths->four-ninthone-ninth->one-ninthtwo-ninths->two-ninththree-ninths->three-ninthfive-ninths->five-ninthsix-ninths->six-ninthseven-ninths->seven-ninthten-ninths->ten-nintheleven-twelfths->eleven-twelfthtwo-ninththree-ninths->three-ninthfive-ninths->five-ninthsix-ninths->six-ninthseven-ninths->seven-ninthten-ninths->ten-nintheleven-twelfths->eleven-twelfthtwelve-twelfths->twelve-twelfththirteen-thirteenths->thirteen-thirteenthfourteen-fourteenths->fourteen-fourteenthfifteen-fifteenths->fifteen-fifteenthSixteen-Sixteenths->Sixteen-Sixtetwelve-twelfths->twelve-twelfththirteen-thirteenths->thirteen-thirteenthfourteen-fourteenths->fourteen-fourteenthfifteen-fifteenths->fifteen-fifteenthSixteen-Sixteenths->Sixteen-Sixteenthseventeen-seventeenths->seventeen-seventeentheighteen-eighteenths->eighteen-eighteenthnineteen-nineteenths->nineteen-nineteenthtwenty-twentieths->twenty-twentieththirty-thirtieths->thirty-thirtienthseventeen-seventeenths->seventeen-seventeentheighteen-eighteenths->eighteen-eighteenthnineteen-nineteenths->nineteen-nineteenthtwenty-twentieths->twenty-twentieththirty-thirtieths->thirty-thirtiethforty-fortieths->forty-fortiethfifty-fiftieths->fifty-fiftiethsixty-sixtieths->sixty-sixtiethseventy-seventieths->seventy-seventietheighty-eightieths->eighty-eightiethninety-ninetethforty-fortieths->forty-fortiethfifty-fiftieths->fifty-fiftiethsixty-sixtieths->sixty-sixtiethseventy-seventieths->seventy-seventietheighty-eightieths->eighty-eightiethninety-ninetieths->ninety-ninetieththousand-thousandths->thousand-thousandthten-thousandths->ten-thousandthfifteen-fifteenths->fifteen-fifteenthtwenty-twentieths->twenty-twentieththirty-thirtieths->thirieths->ninety-ninetieththousand-thousandths->thousand-thousandthten-thousandths->ten-thousandthfifteen-fifteenths->fifteen-fifteenthtwenty-twentieths->twenty-twentieththirty-thirtieths->thirty-thirtiethforty-fortieths->forty-fortiethfifty-fiftieths->fifty-fiftiethsixty-sixtieths->sixty-sixtiethseventy-seventieths->seventy-seventietheighty-eightieths->eighty-eightiethnity-thirtiethforty-fortieths->forty-fortiethfifty-fiftieths->fifty-fiftiethsixty-sixtieths->sixty-sixtiethseventy-seventieths->seventy-seventietheighty-eightieths->eighty-eightiethninety-ninetieths->ninety-ninetieth200thousand->twohundredthousand规律：基数词变序数词的规则1.一般地，单个基数词后面直接加-th.例如：one-*first;two-*second;three-*third;four-*fourth;five-*fifth;si-*sixth;SeVenfseventh;eight-*eighth;nine-*first;twosecond;threethird;four-*fourth;five-*fifth;SiXfsixth;seven-*seventh;eight-eighth;nine-*ninth;ten-*tenth;eleven-*eleventh;twelve-*twelfth;thirteen->thirteenth;fourteen-*fourteenth;fifteen-*fifteenth;sixteen-*sixteenth;seventeen-*seventeenth;eighteen-*eighteenth;nineteen-*nineteenth;twenty-*twentieth;twenty-oneninth;tententh;eleveneleventh;twelve-*twelfth;thirteen-*thirteenth;fourteen-*fourteenth;fifteen-*fifteenth;sixteen-*sixteenth;seventeen-*seventeenth;eighteen-*eighteenth;nineteen->nineteenth;twenty-twentieth;twenty-onetwenty-first;twenty-two-*twenty-second;twenty-three-*twenty-third;twenty-four-*twenty-fourth;twenty-five-*twenty-fifth;twenty-six-*twenty-sixth;twenty-seven-*twenty-seventh;twenty-eight->twenty-eighth;twent-*twenty-first;twenty-two-*twenty-second;twenty-three-*twenty-third;twenty-four-*twenty-fourth;twenty-five-*twenty-fifth;twenty-six-*twenty-sixth;twenty-seven-twenty-seventh;twenty-eight-*twenty-eighth;twenty-nine-*twenty-ninth