他工作太辛苦了。
He has been working since noon.
他从中午就开始工作了。
He has been working very hard.
他一直都很努力。
他近来在加班工作。
他已工作了一整天。
He has been working hard all day.
他辛苦工作了一整天。
他一直在这里工作。
He has been working here for two hours.
他一直在这里工作，已经两小时了。
He has been working on the paper all day.
他整天都在写论文动作是否延续下去，由上下文决定。
He has been working hard for a long time.
他已经努力了很长的时间。
He has been working here for a long time.
他在这儿工作了很长时间。
He has been working in the lab for two hours.
他已经在实验室里工作了两个小时。
He has been working hard since early morning.
从一大早他就一直在使劲干活。
He has been working on this painting for days.
这张画他已画了好些天了。
He has been working hard since last September.
他从去年九月开始一直到现在工作都很努力。
He has been working hard in the past few weeks.
他在过来的几周里任务得很努力。
He looks very tired. He has been working all day.
他很累。他干了一整天活。
He has been working on it for more than ten years.
他已经在公车上工作了超过十年了。
He's very tired; he has been working hard all day.
他很累；他整天都在努力工作。
He has been working on his new book in recent days.
近来他一直忙着写他的新书。
For all these years he has been working for others.
这么多年来，他一直是在给别人打工。
To be fair, he has been working very hard recently.
公平地说，他最近工作一直非常努力。
He has been working here since this time last year.
他从去年的这个时候就在这里工作了。
He is badly ill because he has been working too hard.
他因为过分劳累而病情严重。
He has been working in emergency room since I met him.
自从我上次见到他时，他就一直在急诊室工作。
He has been working here ever since he left university.
自从大学毕业以后，他就一直在这里工作。
He has been working overnight. No wonder he looks worn out.
干了一整夜，难怪他看上去很疲倦。
He has been working overnight. No wonder he looks worn out.
干了一整夜，难怪他看上去很疲倦。
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