Subject + 完成 + Object
The verb 完成 (wánchéng) means 'to complete' or 'to accomplish.' It indicates that a task, process, or action has been finished successfully. It is commonly used in both formal and everyday Chinese, as in 完成任务 (complete a task).
他提前完成了所有的工作任务。
Tā tíqián wánchéng le suǒyǒu de gōngzuò rènwu.
He completed all his work tasks ahead of schedule.
这个项目预计下个月完成。
Zhège xiàngmù yùjì xià ge yuè wánchéng.
This project is expected to be completed next month.
你什么时候能完成这篇论文?
Nǐ shénme shíhou néng wánchéng zhè piān lùnwén?
When can you finish this paper?