--mum,l have been study english since 8.cannot l go out and play with tom for a while?

问题描述:

--mum,l have been study english since 8.cannot l go out and play with tom for a while?
--no ,l afraid not.
为什么用cannot

Cannot是英式英语等同于can not(=)
用否定词作为句首表示强调.
作为从8点就开始学习英语的奖励
“我”认为自己有足够的理由出去玩一会儿
因而用了很强烈的语气,而can...?起不到这样的效果
全句可译为:
妈妈,我从8点就开始学习英语了,难道不能和Tom出去玩一会儿吗?
联系上下文即可理解其意