schoolboy + noun
schoolboy 作形容词时通常只用在名词前，含贬义，指幼稚、笨拙或不谙世故。
He made a schoolboy error that cost his team the game.
他犯了一个小学生式的错误，让球队输掉了比赛。
具有男学生特征的,尤其是顽皮、笨拙和社交意识差的
Characteristic of a schoolboy, especially cheeky, clumsy and socially unaware.
具有男学生特征的,尤其是顽皮、笨拙和社交意识差的
Characteristic of a schoolboy, especially being cheeky, clumsy and socially unaware.
His schoolboy pranks in the office annoyed the manager, but his colleagues found them funny.
他在办公室里的淘气恶作剧让经理很恼火，但他的同事觉得挺好笑。
用法提示：schoolboy 是形容词，修饰 pranks，表示‘男学生似的、顽皮的、爱捣蛋的’。
In a moment of schoolboy clumsiness, he knocked over a stack of books in the library.
在一阵男学生般的笨拙中，他撞翻了图书馆里的一摞书。
用法提示：schoolboy 是形容词，修饰 clumsiness，突出那种笨拙、冒失的男孩特点。
His schoolboy behavior at the formal dinner made the other guests uncomfortable.
他在正式晚宴上的男学生般举止让其他客人感到不自在。
用法提示：schoolboy 是形容词，修饰 behavior，表达‘不谙世故、不得体’的特征。
schoolboy 作形容词时通常只用在名词前，含贬义，指幼稚、笨拙或不谙世故。
He made a schoolboy error that cost his team the game.
他犯了一个小学生式的错误，让球队输掉了比赛。
grammar · medium
易错句子His sense of humour is schoolboy.
正确表达He has a schoolboy sense of humour.
schoolboy 作此义时是只作定语的形容词（如 a schoolboy error、schoolboy humour），不能放在 be 动词后作表语。要表达“他的幽默感是男学生式的”，应把 schoolboy 放在名词前作定语，说 a schoolboy sense of humour。
grammar · medium
易错句子He made several schoolboys mistakes.
正确表达He made several schoolboy mistakes.
schoolboy 作定语修饰名词时不随中心名词的数变化，始终用单数形式；英语中名词/形容词作定语一般用单数，如 schoolboy errors。不能说 schoolboys mistakes。
grammar · medium
易错句子He has a schoolboy humour.
正确表达He has schoolboy humour.
humour 表示“幽默（感）”时是不可数名词，不能与不定冠词 a/an 连用；schoolboy 作定语直接修饰不可数名词，说 schoolboy humour。若要加冠词，可说 a schoolboy sense of humour。
男学生式的低级错误（本不该犯的愚蠢失误）
Losing the tickets twice was a real schoolboy error.
两次弄丢门票，真是犯了个男学生式的低级错误。
男学生式的幼稚幽默
The whole film is full of schoolboy humour that had us giggling.
整部电影充满了男学生式的幼稚幽默，逗得我们咯咯直笑。
男学生式的恶作剧
Hiding the teacher's chalk was a typical schoolboy prank.
藏起老师的粉笔是典型的男学生式恶作剧。
男学生式的顽皮举动
His schoolboy antics embarrassed his older sister.
他男学生式的顽皮举动让姐姐很尴尬。
男学生式的顽皮捣蛋
The broken window was the result of schoolboy mischief.
那扇破窗是男学生式顽皮捣蛋的结果。
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