1
it is smart of sb to do sth
用于称赞某人的明智决定。
It was smart of you to bring an umbrella.
你带了雨伞真是聪明。
聪明的；机灵的；思维敏捷的
先理解核心含义，再看它在真实句子里的用法。
聪明的；机灵的；思维敏捷的
Having or showing intelligence, mental alertness, and resourcefulness; clever.
It was smart of you to bring an umbrella.
你带了雨伞真是聪明。
精明的
Exhibiting social ability or cleverness.
时髦的
Good-looking; well dressed; fine; fashionable.
机智尖刻的
Cleverly shrewd and humorous in a way that may be rude and disrespectful.
思维敏捷、精于算计且足智多谋
showing mental alertness and calculation and resourcefulness
She is smart enough to solve the puzzle without any help.
她够聪明，不用任何帮助就能解出这个谜题。
It was smart of you to save money for the trip.
你为旅行存钱，真明智。
He gave a smart answer that impressed the teacher.
他给出了一个机灵的回答，给老师留下了深刻印象。
用于称赞某人的明智决定。
It was smart of you to bring an umbrella.
你带了雨伞真是聪明。
描述外表整洁、时尚。
She looks very smart in her new suit.
她穿着新西装看起来很时髦。
形容身体刺痛感。
His eyes felt smart from the smoke.
烟雾使他的眼睛感到刺痛。
Not this
He did the test smart.
Use this
He did the test smartly.
smart 是形容词，不能修饰动词。应该用副词 smartly 来修饰动词 did。
Not this
This knife is very smart.
Use this
This knife is very sharp.
smart 作为形容词没有“锋利”的意思，不能用于描述刀具的刃口。表示刀锋利应该用 sharp。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
聪明的主意
It was a smart idea to bring an umbrella.
带伞是个聪明的主意。
聪明的人
She is a very smart person who always finds solutions.
她是一个非常聪明的人，总能找到解决办法。
明智的一步
Investing in that company was a smart move.
投资那家公司是明智的一步。
智能手机
Almost everyone uses a smart phone nowadays.
如今几乎每个人都使用智能手机。
时髦的服装
He wore a smart outfit to the party.
他穿着一身时髦的衣服去参加派对。
聪明人
You're a smart cookie to figure that out so quickly.
你真聪明，这么快就搞明白了。
明智行事
You should play it smart and save some money each month.
你应该明智行事，每月存一些钱。
自作聪明的人
He's such a smart aleck, always correcting everyone.
他真是个自作聪明的人，总是纠正别人。
聪明人
She's a smart cookie; she figured out the puzzle in minutes.
她是个聪明人，几分钟就解出了谜题。
聪明是新的性感。
Smart is the new sexy.
聪明是新的性感。
你是个聪明的女孩。
You're a smart girl.
你是个聪明的女孩。
Use smart naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Smart（聪明的）发音类似‘思马特’，想象一匹聪明的马在思考。
register: mixed; typical settings: daily conversation, education, workplace; note_zh: 该词在表达“聪明”时，既可用于非正式口语，也常见于正式书面语，具体取决于语境。
常作表语或定语；可用于 'be smart to do sth' 结构
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.