I have a lot of brothers or I have a lot of siblings.
To answer "tienes hermanos" in Spanish, you would respond with "Sí, tengo hermanos" if you have siblings, meaning "Yes, I have siblings." If you do not have any siblings, you would respond with "No, no tengo hermanos," meaning "No, I do not have siblings." The verb "tener" means "to have," and "hermanos" means "siblings" in Spanish.
Tengo dos hermanos.
If you have brothers or sisters or both, you say, "Sí." Then you say how many of each you have: Tengo ______ hermano/s. (for brothers) Tengo ______ hermana/s. (for sisters) Tengo ______ hermano/s y _______ hermana/s. (for both) If you are an only child, you answer, "No; no tengo hermanos."
I'm very nervous.
Tengo muchos amigos
To say I have a sister and two brothers in Spanish, you would say: Tengo una hermana y dos hermanos
Tengo tres hermanos
If what you mean to say is "I have one brother," the words in Spanish are, "Tengo un hermano." It is pronounced "TANE-go oon air-MAH-no." See the related link for audio pronunciations of many common Spanish words.
I have siblings.
Translation: Tengo dos hermanos
Tengo muchos caballos y perros.
"Tengo muchos libros para leer."