参加姐姐的婚礼让我觉得很开心。

Cānjiā jiějie de hūnlǐ ràng wǒ juéde hěn kāixīn.

Attending my older sister's wedding made me feel really happy.

我们将在教堂举行婚礼。

Wǒmen jiāng zài jiàotáng jǔxíng hūnlǐ.

We will have the wedding ceremony in the church.

婚礼上他们交换了戒指。

Hūnlǐ shàng tāmen jiāohuàn le jièzhǐ.

They exchanged rings at the wedding ceremony.