同学你好，该知识点来自沪江网校《英语零基础直达大学六级【天猫专享】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
maybe意为“或许、大概”是副词，为美国英语，主要用于非正式场合，口语中常用。语气比perhaps较轻。比如
Maybe they will let me go.或许他们会让我走。  
But perhaps they don't know that yet. 但是他们可能还不知道。  

probably 几乎肯定，很可能，确定的成分更大
It was the best known and probably the most popular of her songs.
这是她最著名的、大概也是她最受欢迎的歌曲。

祝同学学习进步~