really後面跟good還是well和really是沒有任何關係的，換句話說really後面既能跟good也能跟well。

really是一個程度副詞，既可以修飾形容詞也可以修飾副詞，具體接形容詞還是副詞要看前面的動詞是連繫動詞還是實義動詞。如果是連繫動詞則really後跟形容詞，如：It is really good. 如果是實義動詞則really後跟副詞，如：He sings really well.

really後面接good.

He is a top student , a really good one ..

他是個尖子學生，沒有說的。

Really good cooks are few and far between .

好的廚師真是少得很。

There has been some really good stuff on tv lately .

近來電視上有些節目確實不錯。

She 's really good at farm work .

她農活幹得好著呢。