1
with nonchalance
介词短语，通常作方式状语，形容动作中流露出的冷静或不在乎。
She replied with nonchalance, as if nothing had happened.
她若无其事地回答，好像什么都没发生过。
若无其事；漠不关心；无动于衷
先理解核心含义，再看它在真实句子里的用法。
若无其事；漠不关心；无动于衷
calm indifference; casual lack of concern
She replied with nonchalance, as if nothing had happened.
她若无其事地回答，好像什么都没发生过。
冷漠,漠不关心；粗心；冷静；忽视,超然。
Indifference, unconcern; carelessness; coolness; disregard, detachment.
He tried to hide his nervousness behind a mask of nonchalance.
他试图用一副若无其事的样子来掩饰自己的紧张。
She answered the difficult question with surprising nonchalance.
她带着出奇的满不在乎回答了那个难题。
His nonchalance during the exam worried his teacher.
他在考试时的满不在乎让老师很担心。
介词短语，通常作方式状语，形容动作中流露出的冷静或不在乎。
She replied with nonchalance, as if nothing had happened.
她若无其事地回答，好像什么都没发生过。
常用搭配，about后接事物，表示对某事物不以为意。
His nonchalance about the result surprised everyone.
他对结果的无动于衷让所有人感到惊讶。
动宾搭配，affect意为“装出”，整个短语表示“假装不在乎”。
She affected nonchalance despite her nervousness.
尽管很紧张，她还是装出若无其事的样子。
Not this
She is nonchalance about her exam results.
Use this
She is nonchalant about her exam results.
nonchalance是名词，意为“冷淡、漠不关心”，不能直接放在be动词后作表语修饰主语；应使用其形容词形式nonchalant。此错误源于混淆名词与形容词的词性。
Not this
He showed nonchalance to the danger.
Use this
He showed nonchalance about the danger.
表示“对某事冷淡/漠不关心”时，nonchalance后接介词about或towards，不接to。中文“对”容易直译为to，导致介词使用错误。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
若无其事地；满不在乎地
She shrugged with nonchalance when the news broke.
消息传开时，她若无其事地耸了耸肩。
若无其事的样子；装作不在意的神态
He tried to project an air of nonchalance during the interview.
面试时他努力表现出一副若无其事的样子。
假装冷漠；故作镇定
Her feigned nonchalance could not hide her disappointment.
她故作镇定，却掩盖不住失望。
刻意表现出的冷淡；故作从容
With studied nonchalance, he lit a cigarette and looked away.
他故作从容地点了一支烟，把目光移开。
装出若无其事的样子
She affected nonchalance to avoid showing how nervous she was.
她装出若无其事的样子，以免显出自己有多紧张。
带着一副若无其事的样子
She walked into the interview with an air of nonchalance, hiding her nerves.
她带着一副若无其事的样子走进面试间，掩饰着紧张。
伪装的若无其事
He watched her leave with feigned nonchalance, though his heart was racing.
他假装若无其事地看着她离开，心里却怦怦直跳。
刻意的冷静
He replied with studied nonchalance, as if the news meant nothing to him.
他刻意冷静地回答，好像那条消息对他无所谓。
Use nonchalance naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记：non(不)+‘shh’(嘘)+lance → 遇事只是‘嘘’一声，淡定不理，即‘若无其事、无动于衷’。
语域：formal 常见场景：文学叙述、人物神态描写、正式评论 nonchalance 表示表面上不在乎、若无其事的态度，语气比较正式、偏书面化，多用于文学叙述、人物描写或正式评论中；日常口语中较少单独使用。
与 nonchalance 一样，balance /ˈbæləns/、ambulance /ˈæmbjələns/、vigilance /ˈvɪdʒɪləns/、ignorance /ˈɪɡnərəns/ 都以 -ance 结尾，并读作 /əns/，其中最后的 -lance 都读 /ləns/。注意拼写相似的 nonchalant /ˈnɒnʃələnt/ 结尾是 /ənt/，romance /rəʊˈmæns/ 的 -ance 读 /æns/，都不读 /əns/。
Dictionary facts from ECDICT, WIKTIONARY.