我能为你做点什么吗？

Wǒ néng wèi nǐ zuò diǎn shénme ma?

What can I do for you?

妈妈为我们做了很多好吃的。

Māma wèi wǒmen zuò le hěn duō hǎochī de.

Mom made a lot of tasty food for us.

他常常为朋友解决问题。

Tā chángcháng wèi péngyou jiějué wèntí.

He often solves problems for his friends.