perhaps与maybe
perhaps意为“也许”,“可能”,是副词,含有“也许是如此,也许不是如此”的意味,如：
But perhaps they don't know that yet.但是他们可能还不知道.He will perhaps succeed.他也许会成功.(不成功的可能性较大)
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.如：Maybe they will let me go.或许他们会让我走.Maybe he will succeed.他也许会成功.