Chinese phrase
你练了多久了？ nǐ liàn le duō jiǔ le
Meaning
How long have you been practicing?
When to use it
This asks how long someone has been practicing. It is a friendly question about an ongoing skill or activity.
Example dialogue
你最近中文进步很快，你练了多久了？ nǐ zuì jìn zhōng wén jìn bù hěn kuài nǐ liàn le duō jiǔ le
Your Chinese has improved quickly lately. How long have you been practicing?
我学中文已经三年了，每天都会练习口语。 wǒ xué zhōng wén yǐ jīng sān nián le měi tiān dū huì liàn xí kóu yǔ
I've been learning Chinese for three years, and I practice speaking every day.