An
adverb
is
a
part
of
speech
that
normally
serves
to
modify
verbs,
adjectives,
other
adverbs,
clauses,
and
sentences.
In
English,
adverbs
often
have
the
suffix-ly,
but
so
do
many
adjectives.
The
-ly
is
a
common,
but
not
reliable
marker
of
an
adverb.
Some
others
use
the
suffix
-wise.
It
competed
with
a
related
form
-ways
and
won
out
against
it.
In
a
few
words,
like
sideways,
-ways
survives;
words
like
crosswise
show
the
transition
.
Some
other
adverbs
are
identical
in
form
to
their
adjectives.
Otherwise,
other
adverbs
are
derived
from
adjectives.
The
comparative
and
superlative
forms
of
adverbs
that
are
identical
to
their
adjectives
are
generated
by
adding
-er
and
-est.
The
comparative
and
superlative
forms
of
most
other
adverbs
(except
in
poetic
forms
like
wiselier)
use
more
or
most.
Adverbs
also
take
comparisons
with
as
...
as,
less,
and
least.
The
usual
form
pertaining
to
adjectives
or
adverbs
is
called
the
positive.
Thus
the
three
grades
are
positive
"happy",
comparative
"happier",
and
superlative
"happiest".
Other
languages
may
form
adverbs
in
different
ways,
if
they
are
used
at
all:
In
German,
adverbs
do
not
have
a
distinct
form
from
adjectives.
In
Esperanto,
adverbs
are
not
formed
from
adjectives
but
are
made
by
adding
-e
directly
to
the
word
root.
Thus,
from
bon
are
derived
bone,
"well",
and
bona,
"good".
The
following
examples
are
in
English,
because
that
is
the
language
of
this
text.
Examples
in
other
languages
may
be
added,
especially
to
show
language
independent
properties
of
adverbs.
(1)
In
the
following
examples,
the
adverb,
as
a
verb-modifier,
is
highlighted
in
bold.
The
verb
that
it
modifies
is
shown
in
italics.
It
is
tiring
to
runquickly.
My
sister
laughsloudly.
The
sun
shonebrightly.
The
captain
wentboldly.
The
farmer
workedhard.
(NB:
Not
hardly)
The
minister
spokewell.
(NB:
Not
goodly)
(2)
In
the
following
examples,
the
adverb,
as
an
adjective-modifier,
is
highlighted
in
bold.
The
adjective
it
modifies
is
shown
in
italics.
His
poetry
is
verybeautiful.
The
meaning
of
this
passage
is
abundantlyclear.
That
sign
is
hardlyvisible.
(3)
In
the
following
examples,
the
adverb,
as
an
adverb-modifier,
is
highlighted
in
bold.
The
adverb
that
it
modifies
is
shown
in
italics.
I
know
that
he
can
write
moreclearly.
The
sun
came
out
quitesuddenly.
This
species
is
the
slightlyslower
growing
one.
(4)
In
the
following
examples
the
adverb
modifies
a
whole
sentence.