用英语说 北京市大兴区瀛海镇太和庄

Taihe Town Yinghai County Daxing District Beijing

Yonhap town Daxing District, Beijing, Wo Chong

http://www.hao123.com/ss/fy.htm

瀛海镇太和庄都可以直接拼音，yinghai zhen taihezhuang,daxing district Beijing,China

其实没那么多讲究，随便说，不要太机械了就好，外国人说话没语法的

Yonhap town Daxing District, Beijing, Wo Chong

其实你只要用汉语拼音拼写就可以了, 大兴区就是大兴县吧.
TaiHeZhuang, YinHaiZheng, DaXinXian, Beijing

如果一定要较真儿的话,按美国的分类习惯可写成
TaiHe Village, YinHai Town, Daxin County, Beijing