Breakdown of Uno tose mucho si respira ese aire tóxico.
mucho
many / a lot
ese
that (masculine)
respirar
to breathe
si
if
Questions & Answers about Uno tose mucho si respira ese aire tóxico.
Why use uno instead of just the tú form (toses)?
Why isn't the subject uno repeated before respira?
If a woman is speaking, can she say una tose mucho?
A quick refresher: why do we use ese instead of eso for "that toxic air"?
Ese is the masculine singular adjective used right before a masculine noun like aire. You would only use the neuter pronoun eso if you were referring to an abstract idea or an unidentified object, rather than modifying a specific noun.