posted by John .
* We are now passing by Magic Castle.
What is the part of speech of 'by'?
Do I have to capitalize 'Magic'?
What is the part of speech of 'Magic'?
Is it a noun or an adjective?
1. "by" is a preposition. "by Magic Castle is a prepositional phrase behaving as an adverb modifying the verb "are passing".
2. Yes, capitalize Magic Castle if it is the name of a specific place.
If it is NOT a specific place then your would say "by the magic castle".
3. If Magic Castle is a specific place it is a proper noun. If it is not a specific place, then it would be an adjective modifying 'castle'.