Adverb

What is an adverb?
 An adverb is a part of speech that describes or modifies a verb, an adjective, another adverb, clause, or sentence.

 Adverbs answer the questions "How?", "When?","Where?", "Why?", "In what way?", "How much?", "How often?", "Under what condition", "To what degree?"

 The easiest adverbs to recognize are those that end in -ly. Some adjectives end with -ly also butremember that adjectives can modify only nouns and pronouns. Adverbs modify everyting else.

 An adverb can be placed anywhere in a sentence.
Adverbs as modifiers (adverbs in adverbial functions)An adverb modifies a verb
 He walked quickly. ('quickly' modifies verb 'walked')
 I accepted new task willingly. ('willingly' modifies verb 'accepted')
 Mike snored melodically.('melodically' modifies verb 'snored') 

An adverb modifies an adjective
 They were really unhappy. ('really' modifies adjective 'unhappy')
 My brother is completely fearless. ('completely' modifiesadjective 'fearless')
 I know she is very careful. ('very' modifies adjective 'careful') 

An adverb modifies an adverb
 He is almost always hungry. ('almost' modifies adverb 'always')
 Johnplays tennis very well. ('very' modifies adverb 'well')
 You never can work too carefully. ('too' modifies adverb 'carefully') 

An adverb modifies a clause
 Perhaps you are correct, but not atfirst glance. ('perhaps' modifies clause 'you are correct')
 Surely he will be on time, but I hope not. ('surely' modifies clause 'he will be on time') 

An adverb modifies a sentence
Suddenly, she went home. ('suddenly' modifies a whole sentence)
 Finally, he will be on time. ('finally' modifies a whole sentence)
 Today, we can take a vacation.('today' modifies a whole sentence)Adverb Formation
Adverbs that end in -ly are formed by adding -ly to an adjective, a present participle, or a past participle. 
- from an adjective
 careful - carefully
 beautiful - beautiful...