王月芳 头条:watch out for 跟 be Careful of 有什么相同跟不同...?...

Watch out for 密切注视，有“看”的意思

例：Watch out for cars. 当心车辆

be careful of 珍重，注意，留意

例： Be careful of his feelings. 注意他的感觉。

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另外，举几个watch out的例子希望你能理解如何用的：

watch out for someone/something

1. to feel responsibility for someone or something. 对某人某市感到负责任。
例子：Carol's father made me promise I'd watch out for her and make sure she had whatever she needed.

2. to be aware of someone or something. 小心某人某事
例子：I used to tell everyone, “Watch out for this girl. She's going to be a great tennis player one day.”

3. to be careful in order to avoid a problem. 小心而避免麻烦
例子：You've got to watch out for viruses when downloading files to your computer. Watch out for that dog — he's not very friendly.

be careful of:

vt. 注意

例句与用法:
1. Be careful of your health.
注意你的健康；请多保重。

2. Be careful of that chair; it\'s a bit rocky.
当心，那椅子有些不稳。

3. Be careful of that viper; he is dangerous.
小心那个阴险的人，他很危险。

4. Be careful of that horse it often kicks.
小心那匹马--它常尥蹶子.

5. Be careful of the dog; it sometimes bites people.
留心那条狗, 有时候咬人.

watch out for:

v. 戒备, 提防, 密切注意

例句与用法:
1. In the rush to go folkloric watch out for collision of cultures.
在民俗化的热潮中，要提防不同文化的冲突。

2. The police are watching out for the suspect.
警方正密切注意嫌疑犯的行动。

3. The staff were asked to watch out for forged banknotes.
已经要求职员留意伪钞.

4. I said I should be sick, and that I must watch out for symptoms.
我说过我一定是有病了，我得留意一下症状。