这件大衣是我妈妈送给我的。

Zhè jiàn dàyī shì wǒ māma sònggěi wǒde.

This coat was given to me by my mom.

今天很冷，你要穿大衣。

Jīntiān hěn lěng, nǐ yào chuān dàyī.

It’s very cold today, you need to wear a coat.

下雪的时候，我常穿这件厚大衣。

Xiàxuě de shíhou, wǒ cháng chuān zhè jiàn hòu dàyī.

When it snows, I often wear this thick coat.