Wǒmen shì duō nián de lǎo péngyou le.
We've been old friends for many years.
Tā zài zhè jiā gōngsī gōngzuò le duō nián.
He has worked at this company for many years.
Duō nián yǐhòu, tā zhōngyú huídào le jiāxiāng.
After many years, he finally returned to his hometown.
