当然不一样啦.
tell sb sth＝tell sth to sb告诉某人某事
显然这件事情已发生过或将要发生,但不需要被通知者去完成；如She tells me a thing that...=She tells a thing to me.而tell sb to do sth 意为“告诉某人去做某事”,即事情需要被通知者完成~如：She tells me to do this job~