Primero es how many no meny,
luego te ayudo...
-how many dogs do you have?
I have one dog/ i have a dog
-how many brothers and sisters does you girlfriend have?
she has 3 sister and 2 brothers
-how many houses do your family have?
we only have one house
how many televisions do you have in your house?
i have 2 televisions in my house