careful前者是形容词，作定语或表语.如：He is a careful boy.He is careful.carefully是副词,作状语,修饰动词或整个句子.He reads the book carefully.
careful双语例句
1、Be careful not to damage other people's property.
小心别损及别人的财物。
2、Be careful with that ─ it cost a lot of money.
小心别弄坏那东西，它可值钱了。
3、Careful contrast of the two plans shows some important differences.
把两个计划仔细地加以对比就可看出一些重要的差异。
4、They don't last long no matter how careful you are.
不管你如何仔细，他们都维持不了很久。
5、Careful consideration should be given to issues of health and safety.
健康与安全的问题应该认真予以考虑。
6、She was careful not to let her control slip.
她小心翼翼，不让自己失控。
7、Word always gets out no matter how careful you are.
无论你多么小心，总会有消息走漏。
8、Careful maintenance can extend the life of your car.
精心保养可延长汽车寿命。
9、You'll have to be careful how you frame the question.
如何提出这个问题，你得慎重。
10、Be careful you don't trip up on the step.
你小心别在台阶上绊倒了。
