"¿Tú tienes un perro?"
Translation:Do you have a dog?
Twice now I've been caught out in my English grammar. "Have you a dog?" is how I would normally phrase this and it's difficult to accept I've been saying it wrong for 50+ years. Baa baa black sheep have you GOT any wool:-)
Because tener is one of those annoying irregular verbs that doesn't conjugate in a regular way.
By regular, I mean the way the verb is spelt:
Comer, to eat
Yo como, I eat
Tú comes, you eat
Él come, he eats
Ellos comen, they eat
Notice how the com part of comer stays the same and only the part after com changes -o, -es, -e, -en etc. Thats regular conjugation.
Tener doesn't do that, because the spelling changes depending on the conjugation:
Yo tengo, I have
Tú tienes, you have
Él tiene, he has
Ellos tienen, they have
The only real answer to this is to learn all the irregular verb spellings!