Questions & Answers about Mane ros in herba lucet.
Here mane is an adverb, meaning in the morning or early in the morning. It tells you when the action happens.
So the sentence is structured like this:
- mane = when?
- ros = what thing?
- in herba = where?
- lucet = what does it do?
Yes, beginners often notice that. In Latin writing without macrons, mane can look like the imperative form of manēre (stay!).
But context makes the meaning clear. In Mane ros in herba lucet, the sentence is describing a scene, so mane is understood as in the morning, not stay!