No longer do many cities in the United States have a river as the focal point of urban life, but in San Antonio the riverwinds through the middle of the business district, and the River Walk, or Paseo del Rio, is the city's most popular attraction. 这是正确句,我试着理解下你的意思,是说winds和is是双谓语吗?但是这里有个and将句子隔开了the riverwinds through..., and the River Walk... is