1)"Xxx,"Tomsays.肯定要大写2)Tomsays,"xxx."无需大写3)"Xxx,"Tomsays,"xxx."前者大写,后者无需大写。另外,引号中句子结尾句号逗号要注意一下。按您的情况,应该是第2、3中情况,无需大写本人翻译专业