adj.粗心的；疏忽的；草率的；无忧无虑的；漫不经心的
It was careless of you to leave the door unlocked. 你没锁门，太粗心了。
The accident was due to his careless driving. 事故起因于他驾驶疏忽。
Don't be careless about your work. 对工作不可草率。
The sun was shining, and he felt light-hearted and careless. 阳光灿灿，他觉得轻松愉快，无忧无虑。
careless的基本意思指人时是“粗心的”“草率的”,指事物时表示“不用心的”。引申可指“随便的”“自然的”,在句中可用作定语或表语。
careless与of连用时表示“不关心的”“淡漠的”,其后多接具体名词。在句中多用作表语。
careless表示“做某事不细心”时接“in+ v -ing”; 表示“不小心做错了某事”时接动词不定式。
n.粗心
adv.粗心大意地；疏忽地
