你去扶一下奶奶上楼梯吧。

Nǐ qù fú yíxià nǎinai shàng lóutī ba.

Go help Grandma up the stairs.

你可以扶我一把吗？

Nǐ kěyǐ fú wǒ yì bǎ ma?

Can you give me a hand?

他把跌倒的老人扶起来了。

Tā bǎ diēdǎo de lǎorén fú qǐlai le.

He helped the elderly person who had fallen to their feet.