赞同刘老师的解答。这里再补充一点英国著名语言学家弗雷德里克·托·伍德（Frederick T. Wood ）的《英语介词习语词典》（P.807）中有关动词tell的搭配用法，供 douya0808 网友参考：

TELL  vt. 讲述，说。

把某事告诉某人，用to（例如：He went and told the secret to the very next person he met. 他走了，把秘密告诉了他遇着的第一个人）。告诉某人有关某事的情况，用about（即：给某人讲述有关的情况），告诉某人某事，用of（即提到某事）。例如：

Did I ever tell you about the narrow escape we had? 我曾经对你讲过有关我们死里逃生的情况吗？

Have you told your father about that broken window? 你有没有告诉过你父亲那个窗户被打破了？

I could probably have given you something to relieve the pain, if only you told me of it. 那时只要你告诉我你的病痛，我本来有可能给你点药来镇痛的。

我们能说“Tell me all about it.把全部情况告诉我”，但不能说“Tell me all of it”。

And I'll tell you of your mother.

tell ... of ... 是一种怎样的用法呢？和 tell sb about sth.是相同的吗？

回答如下

【1】tell sb of sth 间接地让某人知道某事

（通过告诉与sth相关的某事来让某人知道sth）

She told us of the difficulties she had met with in her work.

她给我们谈了谈她在工作中碰到的困难。

She told me of what she had been reading and her plan for the next term.

她给我讲了一下她这段时间看的书和她下学期的计划。

We must tell them of our decision.

我们应当把我们的决定告诉他们。

【1】tell sb sth 直接地（通过口头告诉）让某人某事

Claire had made me promise to tell her the truth.

克莱尔要我保证把真相告诉她。

It's very kind of you to tell me the truth

你真好,告诉我这真相。

He wanted to tell the news to the world.
他要把这件事告诉每一个人。

I always tell my daughter a story before she goes to sleep.
女儿睡觉之前，我总讲故事给她听。

Tell me your address and telephone number, please.   
请告诉我你的住址和电话号码。

Why has nobody told me this before?   
为什么以前没人告诉我这事?

Has she told you the price?   
她告诉你价钱了吗?

The teacher won't tell the students the answer to the question till everyone hands in his exercise book.   
等每个学生都交了练习本后,教师才会把答案告诉他们。

He finally told her his decision.   
他终于把他的决定告诉了她。

And I'll tell you of your mother.

tell ... of ... 是一种怎样的用法呢？和 tell sb about sth.是相同的吗？

回答如下

【1】tell sb of sth 间接地让某人知道某事

（通过告诉与sth相关的其他事情来让某人知道sth内容）

（备注，介词OF 可以改为ABOUT)

She told us of the difficulties she had met with in her work.

她给我们谈了谈她在工作中碰到的困难。

She told me of what she had been reading and her plan for the next term.

她给我讲了一下她这段时间看的书和她下学期的计划。

We must tell them of our decision.

我们应当把我们的决定告诉他们。

【1】tell sb sth 直接地（通过口头告诉）让某人某事

(直接把STH的详细内容告诉对方，中间不插入其他事情）

Claire had made me promise to tell her the truth.

克莱尔要我保证把真相告诉她。

It's very kind of you to tell me the truth

你真好,告诉我这真相。

He wanted to tell the news to the world.
他要把这件事告诉每一个人。

I always tell my daughter a story before she goes to sleep.
女儿睡觉之前，我总讲故事给她听。

Tell me your address and telephone number, please.   
请告诉我你的住址和电话号码。

Why has nobody told me this before?   
为什么以前没人告诉我这事?

Has she told you the price?   
她告诉你价钱了吗?

The teacher won't tell the students the answer to the question till everyone hands in his exercise book.   
等每个学生都交了练习本后,教师才会把答案告诉他们。

He finally told her his decision.   
他终于把他的决定告诉了她。