An adverb is the word that modifies the sense of a verb, of an adjective, or of another adverb. It indicates circumstance such as manner, time, place, intensity, affirmation, negation, or doubt. In Portuguese, the adverb does not vary in gender or number. The adverb answers questions such as how, when, where, and how much.

Adverbs of manner indicate how an action occurs. In Portuguese, many adverbs of manner end in -mente. There are also simple forms such as well and badly. The adverb of manner usually appears near the verb it modifies.

In Portuguese, we form adverbs of manner from feminine adjectives with the suffix -mente. The result is an adverb that remains invariant. The formation with -mente preserves the accent of the adjective. The resulting adverb can modify the verb, an adjective, or another adverb.

To transform an adjective into an adverb, place the adjective in the feminine and add -mente. If the adjective ends in -e or -l, use the feminine form when it exists and keep the form before -mente. If the adjective is already the same in masculine and feminine, simply add -mente. The meaning preserves the idea of quality, but it indicates manner.

When an adjective has an accent, the adverb formed with -mente keeps the graphic accent. This applies to words like fácil and lógico. The pronunciation and spelling remain regular after formation. The adverb remains invariant even with the accent.

Some common adverbs do not form with -mente and have their own form. They include well, badly, here, there, thus and already. These adverbs are used very frequently in daily life. They can appear together with adverbs ending in -mente.

Time adverbs indicate when an action happens. They can place the verb in the present, past, or future. In Portuguese, many time adverbs are fixed and invariant forms. These adverbs usually appear before or after the verb, depending on the focus of the sentence.

Adverbs of place indicate where the action occurs. In Portuguese, common forms are here, there, over there, inside and outside. These adverbs can be combined with prepositions to form more precise expressions. The adverb of place guides the spatial meaning of the sentence.

The adverb can appear before or after the verb, depending on emphasis. In general, with -mente, the preferred position is after the verb or in the middle of the verbal phrase. With short adverbs, the position is more flexible without changing the central meaning. The important thing is to maintain clarity and avoid separating the adverb from the element it modifies.

Adverbs can be intensified by other adverbs such as very and little. Very often intensifies adjectives and other adverbs, without varying in gender or number. Little reduces the intensity of an action or quality. The combination keeps the adverb as the core of the modification.