我们每个礼拜天都会去教堂。

Wǒmen měi gè lǐbàitiān dōu huì qù jiàotáng.

We go to church every Sunday.

比赛会在下礼拜天举行。

Bǐsài huì zài xià lǐbàitiān jǔxíng.

The competition will be held next Sunday.

今天是礼拜天。

Jīntiān shì lǐbàitiān.

Today is Sunday.