Not having studied hard, he failed the exam.
因为没有努力学习，他考试不及格。
She regrets not having studied the computer hard.
她后悔没有努力学习计算机。
Having studied hard, they have made good progress.
由于刻苦学习，他们取得了很大进步。
They know exactly where to go, having studied floor plans for months.
盗匪已将楼层平面图研究了几个月，很清楚要到哪里去。
Having studied your report carefully, I am convinced that neither of your solutions is correct.
仔细研究了你的报告之后，我相信你的答案没有一个是正确的。
She studied for a while before brushing teeth and having breakfast.
她在刷牙和吃早餐之前学习了一会儿。
She studied for a while before brushing teeth and having breakfast.
她在刷牙和吃早餐之前学习了一会儿。
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