It depends on the context.
Compare:
# He was ahead of me in the queue. # He was before me in the the queue. In these examples, both sentences mean the same thing. Either expression may be used.
But the word 'before' can be used in several ways, and not all of them can be substituted by the phrase 'ahead of.'
e.g.
* "I stand before you today..." cannot be replaced with "I stand ahead of you today ..."
* 'Schumaker was well ahead of his rivals' cannot be replaced with 'Schumaker was well before his rivals' ! * 'In the alphabet, the letter G comes before H' means that G immediately precedes H. We would not say '... G comes ahead of H.'
Yes. The train that is 'ahead of' the other one will arrive at your station 'before' the other one.
dont get ahead
go ahead and swim
The affix "pre-" means before or existing beforehand. It is commonly used in English to indicate something that comes before or ahead of something else.
(go) straight ahead
Prius is a Latin word that means before or ahead. That's why the Toyota hybrid is named Prius to suggest it is before or ahead of it's time.
before
before
Lisette is a proper name. A diminutive of Lise.
Before, in front
Before
It is Arabic. It means father of Salim (proper name).