Under what circumstances do English verbs add ing or ED or s? Under what circumstances do they double write when adding ing? Are there any special phrases like go swimming? Under what circumstances should we remove "ing" from "going swimming"?

Under what circumstances do English verbs add ing or ED or s? Under what circumstances do they double write when adding ing? Are there any special phrases like go swimming? Under what circumstances should we remove "ing" from "going swimming"?

There are many special phrases like go shopping, go boating, go fishing, go hiking, go running and so on