El perro es tranquilo y obediente.

Breakdown of El perro es tranquilo y obediente.

ser
to be
y
and
el perro
the dog
tranquilo
quiet / calm
obediente
obedient

Questions & Answers about El perro es tranquilo y obediente.

Since the lesson is about conjunctions changing, why didn't y change to e before a vowel in y obediente?
The word y (and) only changes to e when the next word starts with an ee sound (spelled with i- or hi-). Because obediente starts with an o sound, the conjunction stays as y.
Why use es instead of está here?
We use es (from the verb ser) here because we are describing the dog's core personality. If we used está (from estar), it would mean the dog is just being calm right now, in this specific moment.
Should obediente end in -o since el perro is a masculine noun?
No, Spanish adjectives that end in -e (like obediente and inteligente) are gender-neutral. They stay exactly the same whether they describe masculine or feminine nouns.
Is tranquilo just the Spanish word for 'tranquil'?
Yes, it is a cognate (a word that looks and means the same), but in Spanish tranquilo is used much more commonly than 'tranquil' is in English. It is the everyday word for 'calm', 'quiet', or 'relaxed'.

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