"tantas cosas"= so many things Examples in Spanish I have many things to do = tengo tantas cosas por hacer I have much to say = tengo tanto que decir have much/many work to do= tengo mucho/tanto trabajo por hacer has many friends= tiene tantos amigos.

in spanish it means " so many things" example: tengo tantas cosas que decirte, que no se por donde empezar. i have so many things to tell you that i don't know where i can begin