他欠了银行一大笔贷款还没还。

Tā qiàn le yínháng yī dà bǐ dàikuǎn hái méi huán.

He owes the bank a large loan that he still hasn't paid back.

我欠你一个人情，以后一定报答你。

Wǒ qiàn nǐ yī gè rénqíng, yǐhòu yīdìng bàodá nǐ.

I owe you a favor and will definitely repay you in the future.

她欠了朋友两千块钱，下个月还。

Tā qiàn le péngyou liǎng qiān kuài qián, xià gè yuè huán.

She owes a friend two thousand yuan and will pay it back next month.