他很有可能提前完成任务用英语怎么说

"He is likely to finish the task ahead of schedule"是表示“他很有可能提前完成任务”的英语表达。
"Ahead of schedule" 是一个短语，意思是提前、预先。例句：
The construction project was completed ahead of schedule. (建筑项目提前完成了)
We finished our report ahead of schedule, so we have extra time to review it. (我们提前完成了报告，所以有额外时间来审核它)
"Likely" 是一个形容词，意思是可能的、有可能的。例句：
It's likely that it will rain tomorrow. (明天可能会下雨)
The company is likely to expand to other countries in the near future. (公司有可能在不久的将来扩展到其他国家)
综上所述， "He is likely to finish the task ahead of schedule" 是一句话表示 他很有可能提前完成任务。