释义：
tell somebody about 对某人说起某事
说话的内容并没有确定，而是大致关于某事的，此时就要用 tell somebody about。
例句：
Tell me about you. new girlfriend.
跟我说说你的新女朋友。
I didn't tell him about you.
我还没有告诉他你的事呢。
What did Mike tell you about her?
麦克是怎么对你说她的？
对话：
A: Tell me about you and Jake.
告诉我你和杰克的事情。
B: It's a long story.
说来话长。