what exactly are CAPITAL LETTERS for in the English writing system?怎么翻译?

问题描述:

what exactly are CAPITAL LETTERS for in the English writing system?怎么翻译?

在英语书写系统里,大写字母到底有什么用处?
for,= used for what reason,
Similar way of saying is,
What do you exactly call me for at this time of the day?