他大概三天没吃东西了。

Tā dàgài sān tiān méi chī dōngxi le.

He hasn't eaten in about three days.

我大概有五年没见过你了。

Wǒ dàgài yǒu wǔ nián méi jiànguo nǐ le.

I haven't seen you in about five years.

我们搬到这里大概四个月了。

Wǒmen bān dào zhèlǐ dàgài sì gè yuè le.

We moved here approximately four months ago.