一个英语句子---分析!

题目

一个英语句子---分析!
可能正是他在驾驶中不小心才导致了这场严重的撞车事故.
以下是我的翻译：
It may be exactly his carelessness in driving that led to this terrible crash.
这样的强调句It may be,that算是强调句吗,关键是加入了may,还能不能算作强调句,我就是想,回归原句要去掉It may be,that,剩下的句子里少了原文的可能两个字；
那要么是这样：
It was probably exactly his carelessness in driving that led to this terrible crash.当然,probably的顺序可以灵活调整,比如放在句首,您看呢,您发言?

答案

Maybe it is his carelessness in driving that led to this terrible car crash.
exactly好像不需要,加了exactly就是确定的,不是可能了.