Chinese grammar 语法: Result complement 好-hao

One of the most often used result complements is 好 (hǎo). It implies that something is complete or done well.

Structure
Forming a result complement with 好 has a very similar meaning to forming one with 完. It expressed that the action has been completed successfully.

When using result complements, it's very common to make the object a topic. This means the object is said first and the subject is often omitted:
object+verb+好+了

Examples

Fàn chī hǎo le.
饭 吃 好 了。

The food's been eaten.