carefulKK [ˋkɛrfəl] /ˈkɛɹfəl/發音care 注意+-ful 充滿…的→充滿注意的展開收合care單字注意-ful字尾充滿…的字面：充滿注意的做事充滿注意，即小心、仔細。形容詞1小心的、謹慎的、當心的Be careful with that knife; the blade is extremely sharp.用那把刀時要小心，刀刃非常鋒利。2仔細的、細心的、周密的After a careful reading of the contract, she signed it.仔細讀過合約之後，她才簽了名。3節省的、省著用的He is careful with money and rarely eats out.他用錢很節省，很少在外面吃飯。4注意的、留意的後接 to 或 thatPlease be careful to lock the back door before leaving.離開前請記得把後門鎖好。感嘆詞1小心、當心口語Careful! The floor over there is still wet.小心，那邊的地板還是濕的。