ahead/ ə'hεd /

1.adverb
(in front) (of place) 在前地

2.adverb
(in work,achievements) 提前地

3.adverb
(in competition) 领先地

4.adverb
(in the future) 在未来

the days/months ahead
今后几天/几个月
to think/plan ahead
事先考虑/计划
ahead of
在…之前
5.adverb
(before in time) 在…面前

6.adverb [+event] 
(in advance of) 预先

7.adverb
(in ranking,progress) 领先

ahead of time/schedule
提前
to get ahead of sb
超过某人
8.adverb
(in progress) 超越

a year ahead
提前一年
to send sb (on) ahead
送某人先走
to go (on) ahead
先走
right {or} straight ahead
笔直向前
9.adverb
(location) 正前方

go ahead!
干吧!