An adverb modifies: a verb: John is a formula one driver. He drives fast (adverb). an adjective: John is a very (adverb) fast (adjective) driver. another adverb: John drives very (adverb) fast (adverb). Remember that an adjective modifies a noun: John is a fast driver and an adverb modifies a verb, an adjective or another adverb.   ADVERBS OF MANNER They tell us how something is done: Ricky plays football badly.  Sainz drives fast.    Position: They go after the verb if the verb is intransitive: Sainz drives fast. Otherwise, they go after the object of the verb: My secretary types letters  fast. Some common adverbs of manner are: badly, well, carefully, clearly, easily, etc. ADVERBS OF FREQUENCY They tell us how often something happens,   Position: a) after the verb "to be" and auxiliary verbs. I am usually at home in the evenings. I will always remember you.                     b) before any other verb. I never have tea for breakfast. Some common frequency adverbs are : always, often, frequently, sometimes, generally, seldom, ever, rarely, never. ADVERBS OF TIME They tell us when something happens, happened, will happen, etc.   Position: these adverbs are usually placed at the very beginning or at the very end of a sentence. He went home yesterday. Some common adverbs of time are: now, yesterday, tomorrow, etc. ADVERBS OF PLACE They tell us where something is, where it happens, happened, etc. Position: a) if there is no object they are placed after the verb. Jennifer is sleeping upstairs.                   b) otherwise they come after the object. Richard took left his books here. Some common adverbs of place are: here, there, upstairs, downstairs, nearby, etc. ADVERBS OF DEGREE They are used when you want to give more information about the extent of an action or the degree to which an action is performed. Position: They can be used in the usual positions of adjuncts. Jim was deeply moved by the sad fate of so many deprived children. Some common adverbs of degree are: absolutely, deeply, entirely, fairly,  quite, etc.