这两句话在语法上有什么区别?如果用这两种句式表达大致相同意思,在含义上有什么区别?I was leaving the office when the telephone rang.She was about to go out when the bell rang.

问题描述:

这两句话在语法上有什么区别?如果用这两种句式表达大致相同意思,在含义上有什么区别?
I was leaving the office when the telephone rang.
She was about to go out when the bell rang.