489　tell...about和tell...from

1　tell sb. about sth. 意为“告诉某人关于某事”。

She told me about it. 她告诉了我那件事。

Who told you about the strange news? 谁告诉你那个奇怪的消息的？

2　tell sb./sth. from sb./sth. 意为“把……区分开，把……分辨出来”。

Can you tell her from her sister? 你能把她和她妹妹区分开吗？

She can't tell this picture from that picture. 她不能分辨出这两幅画。