现在离考试只剩下一个星期了。

Xiànzài lí kǎoshì zhǐ shèngxià yí gè xīngqī le.

There is only one week left until the exam.

现在离上课还有五分钟，你快点儿回来。

Xiànzài lí shàngkè hái yǒu wǔ fēnzhōng, nǐ kuài diǎnr huílai.

There are still five minutes before class starts; hurry back.