English Language Guide: Adverb

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Adverbs typically modify verbs, adjectives, or other adverbs. They perform a wide range of functions and are especially important for indicating "time, manner, place, degree, and frequency of an event, action, or process." Adjectives and adverbs are often derived from the same word, the majority being formed by adding the "-ly" ending to the corresponding adjective form. Recall the adjectives, "habitual", "pitiful", "impish", We can use them to form the adverbs:Some suffixes that are commonly found in adverbs are "-ward(s)" and "-wise":Some adverbs have the same form as the adjectives:Some adverbs are not related to adjectives:Some adverbs inflect for comparative and superlative forms:
Adverbs are most usually placed at the end of a phrase. Time adverbs (yesterday, soon, habitually) are the most flexible exception. "Connecting Adverbs", such as next, then, however, may also be placed at the beginning of a clause. Other exceptions include "focusing adverbs", which can occupy a middle position for emphasis. "