Adverbs

bien	well		quelquefois	sometimes
mieux	better		toujours	always
mal	badly		vite	quickly
peu	little		donc	therefore
déjà	already		encore	yet
bientôt	soon		quelque part	somewhere
ici	here		maintenant	now
là	there		tôt	early
dedans	inside		tard	late
dehors	outside		peut-être	maybe
souvent	often		jamais	ever
d'habitude	usually		nulle part	nowhere

To form an adverb, simply take the feminine form of an adjective and add
-ment to the end.  If the masculine form ends in -e, you just add the
-ment to that.  Adjectives ending in -ent or -ant take the endings -emment
and -amment.

Masculine	Feminine	Adverb
naturel	naturelle	naturellement
heureux	heureuse	heureusement
lent	lente	lentement
facile	facile	facilement
probable	probable	probablement
intelligent	intelligente	intelligemment
brillant	brillante	brillamment
récent	récente	récemment

Note:  Some adverbs such as actuellement (currently, now)
and éventuellement (possibly, perhaps) can be deceiving.  

A Few Irregular Adverbs

vrai	vraiment
gentil	gentiment
profond	profondément
bref	brièvement
précis	précisément

Note:  Adverbs are placed right after the verb in a simple tense.
 Adverbs of opinion and time usually go at the beginning or end of the
sentence.  When peut-être and sans doute begin a
sentence or clause, they are usually followed by que.  With the
passé composé, most adverbs are placed between the auxiliary
verb and past participle.  In negative sentences, pas precedes the
adverb, except with peut-être, sans doute, sûrement,
and probablement.  Adverbs of time and place generally follow
the past participle.

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This article was used with permission from:
Indo-European Languages