Once again, the streets of Somerville are alive with dance. On June 3, the companies are Ali Kenner Brodsky & Co, Anikaya and Jimena Bermejo. On June 17 Fukudance opens the evening followed by Betsy Miller & Matthew Cumbie and Weber Dance. It’s an ideal way to get to know some of our lively local companies — all dancing on the Boston Dance Alliance portable floor! — so catch as many as you can.