Question

句子翻译(现在完成时&过去完成时)。

1. 自从他离开这儿，我从未听说过他。
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2. 我很长时间没有收到他的来信。
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3. 我完成作业了，所以我现在可以去打篮球了。
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4. 这是他第一次来上海参观。
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5. 他们告诉我她已经买了很多书。
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6. 到去年底，他已经学会唱20首歌了。
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7. 我到达火车站时，火车已经开走了。
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8. 妈妈回来时，我已完成了作业。
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Answer 1

1. I haven't heard of him since he left here.
2. I haven't heard from him for a long time.
3. I have finished my homework, so I will play basketball now.
4. This is the first time that he has visited Shanghai.
5. They told me that she had bought many books.
6. By the end of last year, he had learned to sing 20 songs.
7. When I arrived at the station, the train had left.
8. When mum came back, I had finished my homework.
答案不唯一