in front of
earlier than; preceding in time
at an earlier point in an order than; ahead of
occupying a superior place in order of precedence or importance
in preference (to), rather than
earlier than the time
at an earlier time; already; formerly
in the front
"I had known her before"
"as I said before"
"he called me the day before but your call had come even earlier"
"her parents had died four years earlier"
"I mentioned that problem earlier"
"I see the lights of a town ahead"
"the road ahead is foggy"
"staring straight ahead"
"we couldn't see over the heads of the people in front"
"with the cross of Jesus marching on before"
I am sent with broom before, To sweep the dust behind the door.
出自：Midsummer Night's Dream , Shakespeare
Had he his hurts before?..Ay, on the front.
Onward, Christian soldiers, Marching as to war, With the Cross of Jesus Going on before.
出自： S. Baring
He started five minutes ago.
He told me he had seen her a few minutes before.
When you call at the shop again this afternoon, you may be told that the book has been sold only a few minutes before.
He often forgets what he has heard only a few minutes before.
We (have) met them many times before.
When I went back to the town that I had left eight years before, everything was different.
All day, as three days before, we planted trees.
All day, as for three days before, we planted trees.
A few minutes before the accident she called on me.
During the few minutes before the accident she had a chat with me.
For a few minutes before the accident she had a chat with me.
It will not be long before they come back.
误 The students went out before the bell didn't ring.
正 The students went out before the bell rang.