Adverb, Definition of Adverb, Use of Adverbs

What is an Adverb?
Adverbs modify the meaning of the verb. Most of the adverbs are made by adding 'ly': beautifully, secretly, happily, openly, clearly, wisely, foollishly, luckily, certaily, definitely. Adverbs can tell you where, when, how, why and to what extent something happens.
They are often formed from adjectives or nouns be adding the suffix -ly.
For example: Quick becomes quickly, sudden becomes suddenly, intelligent becomes intelligently, . . .
To form an adverb from adjectives ending in -y change the y to i before adding the -ly.
For example: angry becomes angrily, busy becomes busily, . . .
To form an adverb from adjectives ending in -e drop the -e before adding the -ly.
For example: feeble becomes feebly, true becomes truly, . . .
Some adjectives ending in -ly need no changes.
For example: heavenly, . . .
However there are exceptions.
For example: sly becomes slyly, shy becomes shyly, . . .
Some adverbs do not end in -ly.
For example: fast, hard, straight, . . .
Adverbs can modify adjectives:
An adjective can be modified by an adverb, which precedes the adjective.
For example:
It's really nice.
Adverbs can modify adverbs:
Some adverbs can modify others. As with adjectives, the adverb precedes the one it is modifying.
For example:
She did it really well.
Adverbs can modify nouns
Adverbs can modify nouns to indicate time or place:
For example:
The concert tomorrow.
The room upstairs.
Adverbs can modify noun phrases
Some adverbs of degree such as quite, rather, so, such ... can modify noun phrases.
For example:
We had quite a good time.
They're such good friends.
Adverbs can modify determiners, numerals and pronouns
Adverbs such as almost, nearly, hardly, about, etc., can be used:
For example:
Nearly everyone, who was invited, came to the party.
Adverbs can modify sentences
Some adverbs modify a whole sentence, not just a part of one.
For example:
Luckily the car stopped in time. In this sentence luckily modifies the whole sentence, it shows that it was good luck that the car stopped in time,