为什么1到999的英文拼写中没有字母"A"one,two,three,four,five,six,seven,eight,nine,ten．eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen．twenty,thirty,forty,fifty,eightysixty,seventy,ninety多打一个9...f

　　为什么1到999的英文拼写中没有字母"A"

　　one,two,three,four,five,six,seven,eight,nine,ten．

　　eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen．

　　twenty,thirty,forty,fifty,eightysixty,seventy,ninety

　　多打一个9...faint

　　提示：只考虑A.