他现在正在用功学校。
为了要考试及格他努力在用功。
He studies hard (in order) that he may get passed in the exam.
那个男孩假装在用功读书。
我在用功念书，明天才能考沟分才能考满分。
I am studying hard so I can get a perfect score on my test tomorrow.
这孩子实际上正在听收音机，却假装着在用功。
He made a feint of studying hard, though actually he was listening to the radio.
又在用功了，是吗？
珍妮：你好，杰克！真没想到在这里见到你。又在用功了，是吗？
Jenny: Hello, Jack! Fancy meeting you here! Working again, are you?
珍妮：你好，杰克！真没想到在这里见到你。又在用功了，是吗？
Jenny: Hello, Jack! Fancy meeting you here! Working again, are you?
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