Adverb Form
We make many adverbs by adding -ly to an adjective, for example:
quick (adjective) > quickly (adverb)
careful (adjective) > carefully (adverb)
beautiful (adjective) > beautifully (adverb)
There are some basic rules about spelling for -ly adverbs. See the table below:
Adjective ending do this adjective adverb
most adjectives add -ly quick
nice
sole
careful quickly
nicely
solely
carefully
-able or -ible change -e to -y regrettable
horrible regrettably
horribly
-y change -y to -ily happy happily
-ic change -ic to -ically economic economically
But not all words that end in -ly are adverbs. The words friendly, lovely, lonely and neighbourly, for example, are all adjectives.
And some adverbs have no particular form. Look at these examples:
well, fast, very, never, always, often, still