Linking Verbs

So linking words behave grammatically like action verbs (with one exception) except that they are always followed by "like" or "as if" and a noun. Or they are followed by an adjective functioning as an adverb (called an adverb because it describes the verb as much as the subject) (this of course doesn't happen with action verbs, it's the exception). Their meanings can be something similar to "be" as a main verb but it would be easy to find exceptions to this as well. This "feels like" a road, but it "is" actually a sidewalk