carefully作adv副词，在句中修饰动词用
释义：taking care or paying attention
例句：He folded the paper carefully.他小心地把那张纸折起来。
carefully 的形容词是careful
释义：If you are careful，you give serious attention to what you are doing， in order to avoid harm， damage， or mistakes. If you are carefulto do sth， you make sure that you do it. 谨慎的注意的
