Modal adverbs express the way in which an action is executed.
While adverbs of location and adverbs of time almost always
are before a verb, modal adverbs are very often before
an adjective or another adverb. There are two sciences
that classify only for classification; one is economy
the other grammar. No one actually knows whether all the
classifications make any sense, but once classified the
world seems to be in a better order. However, we separate
the modal adverbs into three groups: The first one is the group of adverbs
that can only be before an adjective or another adverb.
The second one is the group in which we put all adverbs, which can be only
before a verb. And last, but not least the group, in which
we put those adverbs that can be before a verb or an
adjective. But note! Many adverbs can be also adjectives.
Here we speak only of adverbs. It happens quite often,
that a word used as an adverb can only be before a verb,
but it is also an adjective and can therefore be standing
before a noun as well.
an adverb in connection with a verb
Er kommt bestimmt
does not come.
as an adjective can be before a noun
Verhältnisse verhinderten jeden Fortschritt.