They had begun to make their effort much at the same time.—Trollope.
I draw forth the fruit, all wet and glossy, maybe nibbled by rabbits and hollowed out by crickets, and perhaps with a leaf or two cemented to it, but still with a rich bloom to it.—Thoreau.
A clause or sentence.
It may also modify a sentence, emphasizing or qualifying the statement expressed; as, for example,—
And certainly no one ever entered upon office with so few resources of power in the past.—Lowell.
Surely happiness is reflective, like the light of heaven. —Irving.
We are offered six months' credit; and that, perhaps, has induced some of us to attend it.—Franklin.
Definition.
280. An adverb, then, is a modifying word, which may qualify an action word or a statement, and may add to the meaning of an adjective or adverb, or a word group used as such.
NOTE.—The expression action word is put instead of verb, because any verbal word may be limited by an adverb, not simply the forms used in predication.