careful用作形容词时意为“仔细的，小心的”。在小学英语学习的过程中也十分常见，下面让我们看一下careful用法有哪些吧。
1.小心；注意；谨慎
例句1：He was careful to keep out of sight.
他小心翼翼地躲开别人的视线。
例句2：Be careful not to wake the baby.
注意别吵醒了宝宝。
2.细致的；精心的；慎重的
例句1：a careful examination of the facts
对事实的仔细调查
例句2：After careful consideration we have decided to offer you the job.
经过慎重考虑后，我们决定给你这份工作。
3.表示做某事时要小心或仔细，其后通常接 in doing sth。
例句1：Be careful in crossing the street.
过马路时小心。
例句2：You cannot be too careful in driving a car.
开车时再怎么小心也不为过
4.后接不定式，表示注意要做某事。
例句1：Be careful not to drop it.
小心不要把它掉了。
例句2：You must be careful to avoid being caught.
你必须小心，不要被抓住。
5.其后可接从句作宾语。
例句1：Be careful how you hold it.
小心拿好。
例句2：Do be careful what you say.
说话一定要小心。
