2者均做“注意，当心，小心”讲时有和区别 (照顾,爱护 等词义不必涉及)
问题1: take care (of) 与 be careful 在词义和语气上有什么区别吗？
1> Take care ,my love.
2>Be careful when you cross the street.

另外；take care 与 be careful 都用于祈使句时，是不是take care 往往表注意当心“当下，眼前”的事情， 而be careful 往往表示
注意当心“未发生，或将要发生的（但不是眼前）”的事情。有这个规律吗？

问题2:take care (of) 与 be careful 在语法功能上有什么区别？
3>You should be careful about your pronunciation.
4>Yuu must be careful as to what you say or do.
5>She is careful at her work.
6>Be careful in money matters.
7>She was very careful of her social connections
8>Be careful with your work .
9>Be careful never to use bad language.
10>Be careful what you do.


be careful 的语法功能有： be careful about/at/in/for/of/with/to do/ what or that 等从句/ as to + 从句
而take care 的语法功能好象只有： take care + 逗号+ sb / take care +逗号+完整句子/take care of sth/ 3种用法， 没有上述be careful 的其余用法，是吗？
尤其take care (of)后面应该不可以接从句吧 ？

问题3：be careful about /at/of/for/in/with在词义上有何区别？
我觉得 be careful about 与be careful in差不多， 其后的含义较广泛 （什么方面的什么什么情况或问题）它们有什么区别？
而be careful at 与be careful of 的意思差不多 其后的宾语含义局限。


最搞不懂的是：be careful for /about /with
比如：11>Be careful about fires!

小心火烛！

12>Be careful for pickpockets.

小心扒手。

13> Be very careful with fires!

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是不是 be careful with 后面的宾语往往是需要‘处理’（动作意味强） 而 be careful about /for 往往其后的宾语是需要‘小心对待” （但不需要做， 动作意味弱）？