1 tell sb. about sth. 意為“告訴某人關于某事”。
She told me about it. 她告訴了我那件事。
Who told you about the strange news? 誰告訴你那個奇怪的消息的?
2 tell sb./sth. from sb./sth. 意為“把……區分開,把……分辨出來”。
Can you tell her from her sister? 你能把她和她妹妹區分開嗎?
She can't tell this picture from that picture. 她不能分辨出這兩幅畫。