a for apple,b for boy
c for cat and d for dog
e for egg and f for fish
g for girl and h for hand
i for ice-cream,j for jack
k for kab,l for land
m for man and n for nose
o for orange and p for pen
q for queen and r for rain
s for sugar and t for tree
u for umbrella and v for van
w for wanter and x for expert
y for yellow and z for zoo
然而并没有国际通用的标准,以词代字母往往是为了区分易混淆字母时采用的
如d和b,有的美国人就喜欢用boy和dog,有的就喜欢bag和dog,反正都能明白