http://www.grammarstation.com/KindsOfAdverbs.html
Unlike other adverbs, adverbs of degree are usually placed before the adjective or the adverb they are modifying, after the auxiliary verb, before the main verb or between the auxiliary verb and the main verb.
Examples: He is really good. (before the adjective)
She almost noticed his presence. (before main verb)
He is just sad. (after the auxiliary verb)
They don't really know you. (between auxiliary verb and main verb)
