reda
dthirtyfourmillio
fivehu
dreda
d
sixtyseve
thousa
deighthu
dreda
d
i
etytwo
2）分数表示法构成：分子基，分母序，分子大于1时，分母在序数词后加S：12
ahalf13o
ethird；23twothirds34threequartersthree
fourths234twoa
dthreefourths
3）表示