I will have a cat
Algo que pasa en este momento
Jugar --> Yo juego
Sujeto + Verbo + Predicado
Subject + Verb + Predicate
I have a cat
Yo tengo un gato
Something that happens in this moment
To fit one verb with one person
something that will happen
Algo que pasará
Subject + Will + Verb + Predicate
To be --> I am
