See this problem:
How about the ship then?
It sailed back _____.
A. safe
B. safely
C. safety
The answer is A. Although it's understandable, I still wondered why B isn't the answer?
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Sign up to join this communityIn my opinion, B is a much better answer.
It's true that we can say He came back safe and sound (he was safe and well when he arrived), but sailed refers to the ship's journey, not just its arrival, so an adverb seems more appropriate.
It sailed back safe.
= the ship sailed back and the ship was safe. (It is quite possible that the ship was badly damaged and the journey was far from safe. It was only when it arrived that the ship and crew could be said to be safe.)
It sailed back safely.
= the ship sailed back in a safe manner. This implies that all due caution was observed.
Compare
He arrived drunk - he arrived and he was drunk.
He arrived drunkenly - he arrived in a manner that suggested he had been drinking, although he could have been ill, dizzy, etc.