Breakdown of Por mucho que llores, no te compraré el juguete.
no
no / not
comprar
to buy
te
to you / yourself (reflexive) / you (direct object)
llorar
to cry
Questions & Answers about Por mucho que llores, no te compraré el juguete.
Why do we use the subjunctive llores instead of the indicative lloras here?
In concessive clauses (phrases meaning even if or no matter how), we use the subjunctive when referring to a future, anticipated, or hypothetical situation. By using llores, the speaker means no matter how much you might cry now or later. If you used the indicative lloras, it would mean even though you are crying right now, stating an established fact.
Could I use por más que instead of por mucho que in this sentence?
Is mucho acting as an adjective or an adverb in the phrase por mucho que llores?
Why does the pronoun te go before compraré rather than attached to the end of it?
Because compraré is a standard conjugated verb in the future tense. Object pronouns like te must go immediately before conjugated verbs. You only attach them to the end of infinitives, gerunds (the -ando or -iendo forms), and affirmative commands.