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154 before (as a preposition)
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before可用作介词,表示:
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在……前面:
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We use ‘a’ before a consonant and ‘an’ before a vowel.我们在辅音前用a,在元音前用an。
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Don’t talk like that before children.在孩子面前不要这样讲话。
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To put the cart before the horse.本末倒置。(谚语)
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在表示“在……前面”时,用in front of时更多:
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At the moment a girl passed in front of him.这时一个姑娘从他前面走过。
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I parked the car in front of the building.我把车停在楼前。
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但用于引申意义时,一般用before:
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Pride comes before a fall.骄者必败。(谚语)
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The question before us is a difficult one.我们面前的问题是一个困难问题。
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He always put the interets of others before his own.他总是把别人利益放在自己利益之前。
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在……以前:
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We left before seven.我们在七点以前就动身了。
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It began to rain, just before midnight.就在午夜前天开始下雨。
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The darkest hour is before the dawn.最黑暗的时刻过了就是黎明。(谚语)
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后面还可跟动名词:
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He waited a little while before making up his mind.在下决心之前他等了一会儿。
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Before entering, he made an examination of the door.进门之前,他先把门检查了一下。
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此外还可用于一些短语:
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I’ll see you again before long.我不久就会见到你们。
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He got here the day before yesterday.他是前天到的。
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This happened the week (year) before last.这是上上星期(前年)发生的。
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