?告诉某人关于某事

tell sb about sth 告诉某人关于某事 introduce oneself tosb 某人介绍自己 全部课程结束在2点 ..

?告诉某人有关某事

tell sb about sth 告诉某人有关某事 tell him about some of her problems 告诉她有关一些她的问题 ..

?告诉某人某事

... chat with friends on the internet 和朋友在网上聊天 tell sb about sth 告诉某人某事 feel happy 感到快乐 ...

?告诉某人有关……的情况

Tell sb about sth 告诉某人有关……的情况。如： Please tell me about your family. 请告诉我有关你家里的情况。