1."Successful"isanadjectivethatdescribesachievement,victory,orapersonorthingthathasachievedgreatsuccess.2.Tobe"successfulatsomething"meanstoachievesuccessinthatparticulararea.-Examples:-Peoplecanbesuccessfulinbusiness.-Peoplecanbesuccessfulatbusiness.-Peoplecanbesuccessfulindoingbusiness.