The handbook of Japanese adjectives and adverbs
For any beginner of Japanese, adjectives and adverbs are bound to present a challenge. Unlike English adjectives, Japanese ones conjugate, meaning that you must memorize their various forms before being able to build sentences of any complexity. Adverbs do not conjugate, but make use of particles to show their grammatical relationship to other words, and some have very subtle shades of meaning that are difficult to grasp. Moreover, many do not translate into adverbs in English.