careless 核心詞議：
adj. 粗心的；漫不經心的
careless 基本解釋
adj. 粗心的；無憂無慮的；漫不經心的，不介意的；淡漠的
速記方法
速記技巧
詞源記憶法
care, 關心；-less, 否定詞綴=不關心，所以很粗心，漫不經心的。
知識擴展
句子比較
比較以下兩句結構不同，但含義相同：It was careless of you to leave the room unlocked.=You were careless to leave the room unlocked.你沒有把門鎖上真是太粗心(太大意)了。2.be careful in doing sth與be careful to do sth：前者指做某事時很粗心，后者指粗心地做了某事(不定式為結果狀語)：He was careless to make some mistakes.他很粗心，結果出了些錯。/He was careless in typing the letter.他打印這封信時很粗心。
詞組短語
careless of 不顧；不關心；不在乎
careless driving 不小心駕駛；粗心駕車
careless mistake 粗心錯誤，疏忽
careless about 對…粗心
careless 變化形式
比較級： more careless
最高級： most careless
易混淆的單詞： Careless
中文詞源：
careless 粗心的
care, 關心。-less, 否定詞綴。
careless
精選例句
1、 The person who sets out late might be careless in driving.
出發晚的人開車可能不小心。[機器自動翻譯，如有錯誤，感謝糾錯]
2、 Tom is careless in preparing his lesson.
湯姆準功課不細心。
1、 They are dangerous only if programmers are careless.
只有當程序員粗心的時候，它們才是危險的。
常見考點例句：
- Many accidents happen because people are careless .
- 很多事故是由人們的粗心引起的。
- The profits of a brilliant trade can be thrown away in a moment by a careless blunder .
- 一個粗心的錯誤在一瞬間內可讓一筆極佳交易的利潤損失殆盡。
- And above all I can understand why we are sloppy and careless because it 's a lot less effort than being careful .
- 最為重要的是，我能理解我們為什么草率和粗心，因為這要比認真少花很多力氣。
- But it was a very prominent misprint and you will perhaps wonder how I could have been so careless as to overlook it .
- 但它卻是一個非常重要的印刷錯誤，而你或許會為我為何會如此粗心以致忽視這一點而疑惑。
- Take seagull as an example again the seagull wiki has a detailed rundown of the framework 's installation process that has several key steps that are sometimes easily overlooked by careless or unsuspecting developers .
- 仍然用seagull作為例子seagull的wiki上有一份詳細的框架安裝流程，其中有幾個關鍵步驟有時候常常被粗心或者沒有戒心的開發者輕易地忽略了。