词典释义：
a male child or youth
男孩，男青年。
a person's son
儿子
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she put her little boy to bed .她把年幼的儿子放到床上。
[with modifier]a male child or young man who does a specified job
（做某项差使的）男孩（或男青年）
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a delivery boy .男送货员。
[usu. with adj.] a man, especially a young or relatively young one
（尤指年轻或比较年轻的）男人
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the inspector was a local boy 检验员是一位当地小伙儿
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I was the new boy at the office .我是办公室新来的男孩。
(
〈非正式〉（指同属一个团队或有共同职业的）一群男人
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he wants to stay one of the boys 他想留住这些男人中的一个
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our boys have finished bombing .我们的士兵们已经完成了轰炸任务。
〈旧〉小伙子（男性之间的称呼，通常是年长称呼年幼者）
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my dear boy don't say another word! 小伙子，什么都别说了！
〈旧，冒犯〉（常用作白人对黑人仆役的称呼）男仆，男佣；侍者，服务员。
used as a form of address to a male dog
［用作对公狗的称呼］伙计
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down boy down! 下来，伙计！
〈非正式〉［用于表示强烈的感情，尤用于表示激动或赞赏］好家伙
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oh boy ,that's wonderful! 好家伙，太妙了！
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boys in blue informal policemen; the police 〈非正式〉警察；警方 -
boys will be boys used to express the view that mischievous or childish behaviour is typical of boys or young men and should not cause surprise when it occurs 孩子总是孩子嘛！（意为男孩子难免要淘气，不足为怪）the big boys men or organizations considered to be the most powerful and successful 大人物（或大机构）
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a little boy 一个小男孩
真题例句：
" Middle English （denoting a male servant）： of unknown origin．"
