先研究英文句子(尤其是搞清楚什么字是名词/副词/形容词/动词...就会区别/使用了.<尽可能避免看中文翻译!>
caution [名词]=慎重/谨慎/小心=意思:"Careful forethought to avoid danger or harm":
cautious [形容词];cautiously[副词];cautionary [形容词];
例:
(1) "Please drive with caution."[谨慎]
(2) "He was cautioned [警告=动词]for driving dangerously."
careful[形容词]=小心/仔细/谨慎;care名词:
例:
(1) "Please drive carefully/cautiously[副词].
(2)"Please be careful/cautious.[形容词]"
attention[名词]=注意/关注/留心=意思:"Concentration of the mental powers upon an object; a close or careful observing or listening."
attentive [形容词](注意的); attentively[副词](注意地)[例如:They listened attentively.
例:(1)Pay attention名词 to your teacher! (注意)
(2)Attention名词! 注意!
(3)That broken leg needs urgent attention留心/care留心(名词).
(4)He stood to attention. 立正(姿势).
结论: (A) attention 同 care;
(B) cautious 同 careful; cautiously 同 carefully;
(C) caution 不同 careful; careful 不同 attention....