Relatively few can drum.

老師們，這個句子是relatively修飾代詞few嗎？若是的話代詞不應該用形容詞修飾嗎，為何要用副詞修飾?

副詞能修飾不少詞，出來動詞和形容詞，還包含代詞，名詞等。如：only she has won the prize.