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1704965451
（3）while还可用作名词，表示“一会儿”：
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1704965453
Just take a while to think; and then we’ll see．只要思考一会儿，然后我们就会明白。
1704965454
1704965455
After a while the train stopped at a station．过一会儿火车在一个车站停了下来。
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1704965457
He was here a short while ago．前一会儿他还在这里的。
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还可用于一些短语：
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1704965461
Where have you been all this while？这段时间你都在哪儿？
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1704965463
I have foreseen this moment all the while．我一直预见到这一时刻。
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1704965465
I can only stay a little while．我只能待一会儿。
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1704965467
They sat there for a long while．他们在那里坐了很长时间。
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1704965469
He hadn’t heard from her for quite a while．他好久没接到她的信了。
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1704965471
I’ll telephone you in a little while．我一会儿给你打电话。
1704965472
1704965473
We go for a picnic in the park once in a while．每隔一段时间我们就到公园野餐一次。
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1704965475
We go out together once in a while but not very often．我们偶尔一道出去，但不常出去。
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1704965477
It is worth while dealing with this in some detail．比较详细地讨论这一点是值得的。
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1704965479
whilst有时可用来代替while：
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1704965481
Whilst she was at some distance, he turned and saw her．当她还离他比较远时，他转身看见了她。
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1704965483
Whilst in Russia, I was taken ill with appendicitis．在俄国时我患上了盲肠炎。
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1704965485
Wood is a natural material whilst glass is a manufactured material．木头是自然材料而玻璃是制造出来的材料。
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1704965487
whilst主要用在书面语中，在口语中不宜使用。
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1704965490
915 who—whom—who(m)ever
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who可作疑问代词，主要用作主语或表语：
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1704965494
Who has borrowed my pen？谁借了我的钢笔？
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1704965496
Who do you think is the best player this year？你认为谁是今年最佳运动员？
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Who are those people？那些人是谁？
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