carefree/careful/careless-融贯中西网站

carefree /ˈkɛəfri:/ adj.无忧无虑的，快乐舒畅的：a carefree holiday无忧无虑的假期These lovely children are very naive and carefree.这些可爱的孩子们非常纯真且无忧无虑。

careful /ˈkɛəful/ adj.小心，谨慎，当心，注意（后跟about, of, with, in或不定式及从句）：He is careful about his appearance. 他很注意自己的外表。He is careful of the rights (feelings) of others.他很尊敬他人的权利(感情)。You should be more careful with your work.你应该更加仔细地工作。Be careful in dealing with such people. 和这种人打交道要谨慎。He is careful enough to check up every detail.他非常仔细，把每一个细节都核对过了。Be careful how you start the machine.怎样开动这部机器须加注意。I was careful (over) what to say. 我对他说的话很是小心。