音标

英 [ˈkeələs]；美 [ˈkerləs]

意思

形容词，意为“粗心的；疏忽的；不谨慎的；无忧无虑的”。常用来形容人做事不认真、缺乏应有的细心，导致错误或不良后果；也可描述一种轻松、没有忧虑的状态 。

造句

表示“粗心的；疏忽的”

He made a careless mistake in the math exam and lost several points.
他在数学考试中犯了一个粗心的错误，丢了几分。

The careless driver caused an accident because he wasn't paying attention.
这位粗心的司机因为注意力不集中引发了一场事故。

She is so careless that she often forgets her keys at home.
她非常粗心，经常把钥匙忘在家里。

Careless handling of the equipment can lead to serious damage.
粗心地操作设备可能会导致严重损坏。

His careless attitude towards work made his boss very angry.
他对工作粗心大意的态度让他的老板非常生气。

The report was full of careless errors, which needed to be corrected immediately.
这份报告满是粗心的错误，需要立即改正。

A careless mistake in the recipe ruined the whole dish.
食谱上一个粗心的失误毁了整道菜。

表示“无忧无虑的”

The children played in the park with careless joy.
孩子们在公园里无忧无虑地玩耍着。

She led a careless life during her college years, enjoying every moment.
她在大学期间过着无忧无虑的生活，享受着每一刻。

Those were the days of careless youth, filled with laughter and dreams.
那些是无忧无虑的青春岁月，充满了欢笑和梦想。

初学英语怎么运用

口语运用

日常抱怨：当你想抱怨他人做事不认真时，可以使用。例如：“My brother is so careless. He always leaves his things everywhere.（我弟弟太粗心了。他总是把东西到处乱放。）”

自我反思：在意识到自己因为粗心犯错时表达懊悔。比如：“I was really careless when I did my homework last night. I made a lot of silly mistakes.（我昨晚做作业的时候太粗心了。我犯了很多愚蠢的错误。）”

描述氛围：描述轻松愉快、没有烦恼的场景。例如：“We spent a wonderful afternoon on the beach, feeling careless and free.（我们在海滩上度过了一个美好的下午，感觉无忧无虑、自由自在。）”

写作运用

记叙文写作：在讲述故事时，用“careless”描述人物的行为特点或事件原因。例如：“Due to his careless behavior, he missed the important meeting. This taught him a valuable lesson.（由于他粗心的行为，他错过了重要的会议。这给了他一个宝贵的教训。）”

议论文写作：在论述关于做事态度等主题时，可将“careless”作为反面例子。比如：“Careless attitudes can bring negative consequences. We should always be careful and responsible in our studies and work.（粗心的态度会带来负面后果。我们在学习和工作中应该始终保持细心和负责。）”

学习积累

制作错题集：把自己因为粗心做错的英语题目整理到一个本子上，在旁边标注“careless mistake（粗心的错误）”，定期回顾，提醒自己避免再次犯错。

情景对话练习：和同学或朋友进行情景对话练习，设定一些包含粗心行为或无忧无虑状态的场景，在对话中自然地使用“careless”这个单词，增强对它的运用能力。