基数词变序数词(之一)基变序,有规律,词尾字母tdd。淤八减t,九减e,f要把ve替。于ty把y变成i,盂记住th前有个e。注:淤指first、second、third。于指eight去掉t,nine去掉e,five和twelve去掉ve加上f。盂指twenty寅twen-tieth等。基数词变序数词(之二)第一、二、三要全变,淤其余“th”加后边,于“th”里有例外, Base-line variable ordinal number (one) base sequence, regular, suffix letter tdd. Silt eight minus t, nine minus e, f should ve for. Ty in the y into i, remember before the glass e. Note: silt means first, second, third. Refers to eight to remove t, nine remove e, five and twelve to remove ve plus f. Meng refers to Yin twen-tieth and so on. The first two, three to change, silt remaining “th ” plus the back, there are exceptions in “th ”,