T=teacher,TO=Tommy
T:Givemeasentencestartingwith"I",Tommy.
TO:Yes,sir.Iis...
T:No,no,Tommy!Don'tsay"Iis",youshouldsay"Iam".
TO:Allright,sir.Iamtheninthletteroftheaiphabet.理论上绝对合理的用法"Iam"怎么就突然变成了错误的,而本该错误的“Iis”反倒成了合理的呢?
这道题是不是出错了?应该怎么回答?