1 in frontDictionary, on, forwardsHe looked straight ahead.
2 at an advantage, in advance, in the leadChildren in smaller classes were 1.5 months ahead in reading.
at an advantage
The subject of the talk is announced a week in advance.
in the lead
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Henceforth means from this time onwards.
We are henceforth barred from the base.
Video: pronunciation of 'ahead'
ahead 的词库—— 柯林斯 英语词库
Something that is ahead is in front of you. If you look ahead , you look directly in front of you.