The floor was swept.

地板打扫了。

The letter was written by him.

这封信是他写的。

The glass was broken by the boy.

杯子被那个男孩打破了。

English is spoken by many people in the world.

世界上许多人说英语。

Knives are used for cutting things.

刀用来切东西。

English can be spoken by him.

他会讲英语。