一到四十五的英语序数词

first
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
elevnth
twelfth
thirteenth
fourteenth
fifteenth
sixteenth
seventeenth
eighteenth
nineteenth
twentieth
twenty-first
twenty-second
只要是几十几
就是基数词加"-"再加一到十的序数词
如57：fifty-seventh
但20,30,40这种要自己记
twentieth
thirtieth
fortieth