你說對了四分之一，因為「adverb」除了「add something to the verb」（動詞），還「add something to the adjective」（形容詞），「add something to another adverb」（另一個副詞），和「add something to the sentence」（全句）。
哈 利：
是嗎，副詞可以修飾副詞、形容詞和全句那麼利害？
趙老師：
讓你我用例句證明：
修飾動詞：
He walked slowly.
He runs quickly.
修飾副詞：
He speaks very softly.
She walks rather slowly.
修飾形容詞：
He is very handsome.
It isn't good enough.
修飾全句：
Unfortunately he was caught by the teacher.
Apparently he is very rich.
哈 利：
我也試作一句。
Fortunately you told me.
Frankly I don't know.