副词
1. You'd better plan ahead.
你最好事先计划一下。
2. Walk straight ahead until you reach the river.
一直朝前走到河边。
3. His eyes stared straight ahead.
他的眼睛直盯着前方。
4. ahead的近义词
4. Two people were ahead of us, and travelling fast.
有两个人在我们前面，走得很快。
5. The hills ahead are not wooded.
前面的山上没有生长树木。