我很喜欢我的新同事，他们对我非常好。

Wǒ hěn xǐhuān wǒde xīn tóngshì, tāmen duì wǒ fēicháng hǎo.

I really like my new coworkers; they're really good to me.

因为最近工作压力太大了所以我的同事辞职了。

Yīnwèi zuìjìn gōngzuò yālì tài dà le suǒyǐ wǒ de tóngshì cízhí le.

Because work pressure has been too great recently, my colleague resigned.

他是我的同事，也是我的朋友。

Tā shì wǒ de tóngshì, yěshì wǒ de péngyou.

He is my coworker, and also my friend.