PORQUE PERDÍ MUCHAS COSAS (correct SPELLING) --- Because I've lost a lot of things.
"Voy a hacer muchas cosas hoy" means " I am going to do a lot of things today".
many things
I do a lot of things
Sería mejor si se diese un contexto claro, porque de entrada eso suena a muchas cosas, en las que mejor no ahondo.
A lot of things are my fault
It means "There are many things to do".
It means, "This kiss means a lot of things."
Many women = muchas mujeres. Many men = muchos hombres. Many things = muchas cosas. Many people = muchas personas Many horses = muchos caballos.
It means, "...in my bed thinking about a lot of things."
In my life there are many beautiful things one of them is you. (Some of the vocab is not quite accurate; En mi vida hay muchas cosas hermosas, y una de esa [accent on e] es tu [accent over the u])
It doesn't translate well, it means this: "Because forever, to speak things that you know." Maybe you may have wanted to say, Porque tu siempre hablas cosas que tu sabes" Which would mean: "Because you always speak / say things that you know."
muchas = Many