These are either adjectives or verbs, which indicate the outcome of an action. gān jìng ‘clean’ is an example of an adjectival result complement. In English these verb-result complements are often translated as verbs which have an inherent process and result meaning (e.g. ‘wash’ in the example above means ‘wash clean’) and the same applies to most of the examples below.
学生把黑板擦干净了。
xué shēng bǎ hēi bǎn cā gàn jìng le 。
The student cleaned the blackboard.
司机把汽车修好了。
sī jī bǎ qì chē xiū hǎo le 。
The driver repaired his car.
他把那篇文章写完了。
tā bǎ nà piān wén zhāng xiě wán le 。
He has finished writing that essay.
[1] Yip, P. C., Rimmington, D., Xiaoming, Z., & Henson, R. (2009). Basic Chinese: a grammar and workbook. Taylor & Francis.