"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"
at or in the front;
"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"
before的用法和样例:
例句
用作前缀 (pref.)
B comes before C in the alphabet. B在字母表里排在C之前。
He made a statement before the House of Commons. 他在下议院当众发表了一个声明。
He always put the interests of others before his own. 他总把他人的利益放在第一位。