Japanese phrase
私などまだまだです。 watashi na do ma da ma da de su
Meaning
I still have a long way to go.
When to use it
Says that one's ability is still not good enough. It is a humble response to praise and shows that the speaker does not want to boast.
Example dialogue
日本語が上手ですね。 nihon go ga jō zu de su ne
Your Japanese is very good.
ありがとうございます。私などまだまだです。 a ri ga tō go za i ma su watashi na do ma da ma da de su
Thank you. I still have a long way to go.