表演将会提前半小时开始。

Biǎoyǎn jiānghuì tíqián bàn xiǎoshí kāishǐ.

The performance will start half an hour earlier.

如果你要请假，请提前跟老板说。

Rúguǒ nǐ yào qǐngjià, qǐng tíqián gēn lǎobǎn shuō.

If you want to take leave, please tell the boss in advance.

我们最好提前十分钟到教室。

Wǒmen zuìhǎo tíqián shí fēnzhōng dào jiàoshì.

We’d better arrive at the classroom ten minutes early.