二月的小桃子
1、使用对象不一样
be careful of 一般是指对某样东西……小心
be careful about 通常是对某件事（人）小心
2、语气色彩不一样
Be careful of强调对...认真，细心，小心（比较褒义）
Be careful about强调的是要当心、小心，对..提高警惕（中性词）
3、词义广泛性不一样
be careful of 当心；注意；当心…对…仔细
例句：
1.You've got to be careful of these Eastern lawyers. If you are not careful, they'lltake you and turn you inside out.
对这些东部的律师可得提防。一不小心，他们就会抓着你，把你整得够呛！
2.It's easy to think you will forget anyway, be careful of that thought.
如果你总是想着“我反正都会忘记的。”那就要小心了。
Be careful about 关切；谨慎对待；重视
例句：
1.This forces these two dependent projects to be very focused on realistic status,as well as be careful about assigning new activities.
这就迫使这两个相互依存的项目集中关注现实的状况，同时对分配新的活动也会十分小心仔细。
2."He loves to drink, so I once told him to be careful about his drinking, " Yoshio Mori, a former prime minister, said in a TV interview.
“他喜欢喝酒，所以我曾告诉他要对喝酒多加小心。”前首相森西朗在一个电视采访中如是说。
闪闪惹人爱ii
careful的英文介绍如下：
一、基本释义：仔细的、小心、谨慎、细致的、注意、精心的、慎重的。
三、短语搭配如下：
be careful意为小心 ，当心 ，小心点。careful of，意为小心，注意，仔细的，保护。careful thought，意为细致 ，思想缜密 ，熟虑，仔细的思考。careful about，意为小心，注意。careful inspection，意为仔细检查 ，认真检查。
Careful Discretio，意为小心作主委托。Careful planning，意为精心谋划， 仔细的规划，仔细规划，缜密计划。Careful grenade，意为小心手雷，小心手榴弹，仔细手榴弹。less careful，意为不那么认真，少小心，少认真 。
四、双语例句如下：
She stressed the importance ofcareful preparation.她强调了认真准备的重要性。If you're notcareful, you could finish up seriously ill.你要是不小心，可能到头来会得场大病。Becareful with that —it cost a lot of money.小心别弄坏那东西，它可值钱了。
They don't last long no matter howcareful you are.(不管你如何仔细，他们都维持不了很久。careful planning is the secret of success.仔细计划是成功的诀窍。Becareful climbing that ladder. Look what happened last time.爬那梯子时小心点儿，上次就出事了。
微微的辣
be careful about 通常是对某件事（人）小心.be careful of 一般是指对某样东西……小心.Be careful abou强调的是要当心、小心,对..提高警惕Be careful of强调对...认真,细心,小心（比较褒义）
和斯蒂芬is
谨慎小心行事_有道翻译翻译结果：Cautious tread carefullycautious英 ['kɔːʃəs]美 ['kɔʃəs]adj. 谨慎的；十分小心的更多释义>>[网络短语]Cautious 谨慎,小心的,慎之又慎cautious of 小心,谨慎的cautious style 谨慎型,对谨慎型
