- Adverbs      tell how (“eagerly”),      when (“lately,” “often”), where (“there,” “outside”), how      much (“very,” “too”), and why (“therefore”).
 
- Adverbs      usually modify verbs, other adverbs, or adjectives. 
 
Bob drives carefully . (“Carefully” modifies the verb “drives.”)
Bob drives very carefully.  (“Very” modifies the adverb “carefully.”)
Bob is quite tall. (“Quite” modifies the adjective “tall.”) 
- Adverbs      are often “adjective + -ly”:  
 
patient--patiently
careless--carelessly
expensive--expensively
probable--probably
certain--certainly
happy--happily
honest--honestly
personal--personally
real--really
direct--directly
fair-fairly
serious--seriously
- But      not all adverbs end in –ly: 
 
again, ago, all, almost, also, always, any, anyhow, anymore, anyplace, anytime, anyway, anywhere, better, best, enough, far, farther, fast, further, furthest, here, how, inside, just, later, maybe, more, most, much, never, next, now, often, once, outside, quite, rather, slow  (also slowly), so, some, somehow, sometime, sometimes, somewhat, still, straight, there, therefore, too, very, well, what, whatever, when, whence, whenever, where, whereby, wherein, wherever, yet. 
- Not      all words that end in -ly are automatically adverbs; 
 
“friendly,” “likely,” “lonely,”  and “lovely” are adjectives.  
“Early” can be an adjective OR an adverb.
- “Fast,”      “slow,”  “quick,” “early,” and “straight” are examples of other words that      can be adjectives AND adverbs, BUT have the same meaning: 
 
Sara walks fast.  (adverb) = Sara is a fast walker. (adjective).  
The early bus (adjective) = the bus that arrives early (adverb). 
- Most      adverbs, like adjectives, can be compared using “more” and “most”:      sharply--more sharply--most sharply. One- syllable adverbs      are compared using “-er” and “-est”: straight--straighter--straightest.      
 
Some adverbs are irregular:  
well--better--best,   
badly (ill)--worse--worst,   
much--more--most,   
little--less--least,   
far--farther (further)--farthest (furthest).