他们分手后还保持友好关系。

Tāmen fēnshǒu hòu hái bǎochí yǒuhǎo guānxì.

They maintained a friendly relationship after they broke up.

我的邻居们都很友好。

Wǒ de línjūmen dōu hěn yǒuhǎo.

My neighbors are all very friendly.

这是一个很友好的国家，每个人都愿意帮助别人。

Zhè shì yí gè hěn yǒuhǎo de guójiā, měi gè rén dōu yuànyì bāngzhù biérén.

This is a very friendly country; everyone is willing to help other people.