李先生今天有事，不能来参加会议。

Lǐ xiānsheng jīntiān yǒu shì, bù néng lái cānjiā huìyì.

Mr. Li is busy today and can’t come to the meeting.

我们班有两个同学都姓李，但是性格完全不一样。

Wǒmen bān yǒu liǎng gè tóngxué dōu xìng Lǐ, dànshì xìnggé wánquán bù yíyàng.

There are two classmates in our class whose family name is Li, but their personalities are completely different.

这是我的汉语老师，姓李。

Zhè shì wǒ de Hànyǔ lǎoshī, xìng Lǐ.

This is my Chinese teacher; her family name is Li.