be a fool to do sth
表示“做某事很不明智”，to 后接动词原形，主语也可以换成 you、I 等。
She was a fool to lend him her car.
她把车借给他真是傻。
傻瓜；蠢人；没头脑的人
容易受骗的人；上当者；宫廷小丑；弄臣；水果奶油甜品；傻瓜角色；喜剧丑角；愚者（塔罗牌中的一张牌）
a person who lacks good judgment or acts unwisely
一种典型的角色,通常表现为愚蠢、天真或倒霉,常作为喜剧性调剂；也常被用作观众的洞察或感伤来源,因为这些角色通常不受社会期望的约束
A stock character typified by unintelligence, naïveté or lucklessness, usually as a form of comic relief; often used as a source of insight or pathos for the audience, as such characters are generally less bound by social expectations.
一种由水果泥和奶油或蛋奶酱制成的甜点
A type of dessert made of puréed fruit and custard or cream.
缺乏良好判断力的人
a person who lacks good judgment
被愚弄或被骗的人；受骗者
Someone who has been made a fool of or tricked; dupe.
容易上当受骗的人
a person who is gullible and easy to take advantage of
塔罗牌中的一张牌,代表小丑
A particular card in a tarot deck, representing a jester.
中世纪受雇于国王或贵族以娱乐的专业小丑
a professional clown employed to entertain a king or nobleman in the Middle Ages
Don't be such a fool; check the facts before you believe that story.
别这么傻，在相信那个故事之前先核实一下事实。
用法提示：fool作名词，表示缺乏判断力的人。
The con artist easily made a fool of the tourists.
那个骗子轻易地愚弄了游客。
用法提示：fool作名词，表示容易上当受骗的人。
In medieval times, a court fool would often wear colorful clothes and entertain the king.
在中世纪，宫廷小丑常常穿着色彩鲜艳的衣服，娱乐国王。
用法提示：fool作名词，表示受雇于国王的专业小丑。
表示“做某事很不明智”，to 后接动词原形，主语也可以换成 you、I 等。
She was a fool to lend him her car.
她把车借给他真是傻。
固定搭配，意思是“捉弄某人、让某人显得可笑”，宾语放在 of 后面。
He made a fool of me in front of the whole class.
他当着全班同学的面让我出丑。
这里 fool 相当于 foolish，前面常与 be 连用，语气偏口语。
I was fool enough to believe his story.
我傻到相信了他的说辞。
play 也可换成 act，the fool 形式固定，表示“装傻、胡闹”。
Stop playing the fool and tell me what really happened.
别装傻了，告诉我到底发生了什么。
grammar · medium
易错句子My little brother is fool.
正确表达My little brother is a fool.
fool 作"傻瓜"讲时是可数名词单数，前面必须加冠词 a/an。汉语名词没有冠词，把"我弟弟是傻瓜"逐字直译就常漏掉 a。
grammar · medium
易错句子You are so fool.
正确表达You are such a fool.
so 是副词，只能修饰形容词或副词，不能直接修饰名词；fool 是名词，要用 such a + 单数可数名词的结构。
grammar · medium
易错句子There are a lot of fool in my class.
正确表达There are a lot of fools in my class.
fool 表示"傻瓜"是可数名词，a lot of 后接可数名词时要用复数形式，即加 -s 变成 fools；汉语名词不随数量变化，容易漏掉复数词尾。
两者都可指缺乏判断力的人，但 idiot 语气更重、更带侮辱性，多用于骂人或自嘲；fool 语气较轻，更常见于书面语和固定说法（如 make a fool of someone），还可作动词表示“愚弄”。想强调“一时糊涂做错事的人”用 fool 更自然，直接骂人愚蠢则多用 idiot。
词性不同：fool 是名词（也可作动词），foolish 是形容词。说“某人很傻”要用 be foolish，不能把名词 fool 直接放在 be 后当形容词（不说 He is very fool）；修饰名词时用 foolish（a foolish decision），而指“某人是个傻瓜”这一身份时用 a fool。
拼写相近、读音易混：fool 的元音是长元音 /uː/，full 是短元音 /ʊ/，且两者意思毫无关系。听音、拼写时要注意区分长短音，也不要给 full 多写一个 o。
出丑，丢脸
He made a fool of himself at the party.
他在聚会上出了丑。
装傻，胡闹
Stop playing the fool and get to work.
别装傻了，去干活。
装疯卖傻，干蠢事
He's always acting the fool in class.
他总是在课堂上装疯卖傻。
愚人节被捉弄的人
I was an April fool when I believed his joke.
我信了他的玩笑，成了愚人节的傻瓜。
徒劳无益的差事
Looking for the lost keys in the dark was a fool's errand.
在黑暗中找丢失的钥匙是徒劳的。
虚幻的幸福
Thinking he could win without studying was a fool's paradise.
以为不学习就能赢是虚幻的幻想。
游手好闲；鬼混；胡闹
Stop fooling around and get to work.
别胡闹了，快去工作。
出丑；闹笑话
He made a fool of himself at the party by singing off-key.
他在派对上跑调唱歌，让自己出丑了。
精明；不易上当
She's nobody's fool; she knew exactly what he was up to.
她可不是好骗的；她很清楚他在耍什么花招。
愚人和他的钱很快分手。
He wasted all his savings on lottery tickets; a fool and his money are soon parted.
他把所有积蓄都花在彩票上，愚人和他的钱很快分手。
只有傻瓜才会仓促行事。
The song goes, 'Wise men say only fools rush in,' reminding us to be cautious in love.
这首歌里唱道，‘智者说只有傻瓜才会仓促行事’，提醒我们在爱情中要谨慎。
发长 /uː/ 音 (如 food, boot)
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Includes Synonyms & Antonyms
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