w? _Rapidly_. How does he walk?
_Very fast_. Where has he gone? _Far away_. When will he return? _Soon_.
How does she sing? _Sweetly_. How much do they learn? _None at all_.
From this illustration, you perceive, that, if you could not tell these
adverbs by the sense, you would know them by their answering to the
questions. However, your better way will be to distinguish adverbs by
considering the office they perform in the sentence; or by noticing
their grammatical relation, or their situation, with respect to other
words. To gain a thorough knowledge of their real character, is highly
important. _Rapidly, fast, far away, soon, sweetly_, &c. are known to be
adverbs by their qualifying the sense of verbs. "A _very_ good pen
writes _extremely well." Well_, in this sentence, is known to be an
adverb by its qualifying the sense of the verb _writes; extremely_, by
its ending in _ly_, or by its being joined to the adverb _well_ to
qualify it; and _very_ is known as an adverb by its joining the
adjective _good_.

Expressions like these, _none at all, a great deal, a few days ago, long
since, at length, in vain_, when they are used to denote the _manner_ or
_time_ of the action of verbs or participles, are generally termed
_adverbial phrases_.

Adverbs, though very numerous, may, for the sake of practical
convenience, be reduced to particular classes.

1. _Of Number;_ as, Once, twice, thrice, &c.

2. _Of Order;_ as, First, secondly, lastly, finally, &c.

3. _Of Place;_ as, Here, there, where, elsewhere, anywhere, somewhere,
nowhere, herein, whither, hither, thither, upward, downward, forward,
backward, whence, thence, whithersoever, &c.

4. _Of Time_. _Present_; as, Now, to-day, &c. _Past_; as, Already,
before, lately, yesterday, heretofore, hitherto, long since, long ago,
&c. _Future_; as, To-morrow, not yet, hereafter, henceforth,
henceforward, by and by, instantly, presently, immediately, ere long,
straightways, &c. _Time indefinite_; as, Oft, often, oft-times,
often-times, sometimes, soon, seldom, daily, weekly, monthly, yearly,
always, when, then, ever, never, again, &c.

5. _Of Quantity_; as, Much, little, sufficiently, how much, how great,
enough, abundantly, &c.

6. _Of Manner_ or _quality_; as, Wisely, foolishly, justly, unjustly,
quickly, slowly, &c. Adverbs of quality are the most numerous kind; and
they are generally formed by adding the termination _ly_ to an adjective
or a participle, or by changing _le_