ahead
/əˈhed/adverb
1- further forward in space; in the line of one's forward motion在前面, 朝前地：
he had to give his attention to the road ahead
他不得不注意前面的路
he was striding ahead towards the stream.
他朝着小溪大步向前走。
1.1
- further forward in time; in advance; in the near future今后; 提前地; 在不久的将来：
he contemplated the day ahead
他考虑着将来
we have to plan ahead.
我们必须提早进行计划。
1.2
- onward so as to make progress（为进步而）向前地。
1.3
- in the lead领先：
the Bucks were ahead by four
雄鹿队以四分领先
he was slightly ahead on points.
他在得分上稍微领先。
1.4
- higher in number, amount, or value than previously（数量或价值上）更多, 更高：
profits were slightly ahead.
利润稍有提高。
短语
ahead of
1
- in front of or before在…前面, 在…之前：
she walked ahead of him along the corridor.
她沿着走廊在他前面走。
1.1
- in store for; awaiting准备着; 等待着：
we have a long drive ahead of us.
我们还要开很久的车才能到。
1.2
- earlier than planned or expected提前：
elimination of trade barriers came five years ahead of schedule.
贸易壁垒的取消比计划提前了五年到来。
ahead of one's（或its） time
- innovative and radical by the standards of the time; more characteristic of a later age超前的, 比所处时代激进的; 更具未来时代特征的。
词源
mid 16th cent. (originally in nautical use)： from A-2 'in， at'+HEAD.