天黑不久，街上的灯都亮了。

Tiān hēi bù jiǔ, jiē shàng de dēng dōu liàng le.

Not long after it got dark, all the street lights came on.

他们认识不久就成了好朋友。

Tāmen rènshi bù jiǔ jiù chéng le hǎo péngyou.

They became good friends soon after they met.

她搬家不久就找到新工作了。

Tā bānjiā bùjiǔ jiù zhǎodào xīn gōngzuò le.

Not long after she moved, she found a new job.