那棵大树被砍下了。

Nà kē dàshù bèi kǎn xià le.

That big tree was cut down.

他在树上砍了一颗椰子下来。

Tā zài shù shàng kǎn le yì kē yēzi xiàlái.

He chopped a coconut down from the tree.

他们砍了一些木材用于建造房屋。

Tāmen kǎnle yīxiē mùcái yòngyú jiànzào fángwū.

They chopped some wood for building houses.