He dedicated most of his time to charity work.
    他大部分時(shí)間都致力于慈善工作。
    dedicate表示把時(shí)間或精力等用在...，用在哪方面就用介詞to。 dedicate的名詞是 dedication,表示對(duì)某事的熱誠(chéng)和獻(xiàn)身。
    her dedication to education她對(duì)教育的熱誠(chéng)付出。
    He dedicated his life to science.
    他獻(xiàn)身于科學(xué)。