I go shopping, or, I go to shop.
"I'm going shopping with friends (all-female friends)."
Vamos de compras. Vayamos de compras.
ir de compras
ir de compras
"Fui de compras"
torre de compras
It is "¿Qué vas a hacer?", meaning "What are you going to do?" Your answer would be in the form of "Voy a...", for example "Voy a ir de compras." - "I'm going to go shopping".
Me gusta ir de compras.
Un carro de compras.
"Ellos(unneeded word) fueron de compras"
You would say "Vamos al mercado". This could be translated as "We go to the market", "We are going to the market", or "Let´s go to the market". It all depends on context and the oinion of the translator.
Going shopping with my mother and my sister