This is the 1481st most frequent Chinese word.
早已
"早已" means "long ago" or "long since."
In this sentence, '早已' emphasizes that the action of completing the task was done much earlier.
我早已完成了这项任务。
I have already completed this task.
Here, '早已' conveys that the knowledge was acquired a long time ago.
她早已知道了这个消息。
She already knew this information.
In this case, '早已' highlights that the planning occurred significantly earlier than now.