Is Ran an Adverb

Ran is a verb and the complete predicate in this sentence, and we can expand the predicate by adding any possible adverb: He ran quickly. Instead of quickly, we could use slowly, clumsily, gracefully, erratically, fast, then, later, and many others.

Is run an adverb or adjective?

Run can be an adjective, a noun or a verb.

Is this adjective or adverb?

This can be used in the following ways: as a determiner (followed by a noun): He gave me this diamond ring. as a demonstrative pronoun (without a following noun): This is the photograph you asked for. as an adverb (before an adjective, adverb, or ‘much’): It’s a long time since I felt this good.