The "a ti" highlights it but is unnecessary
No te acuso a ti, pero ha desaparecido, the a tí highlights it but is unnecessary wouldn't you say? Just for slight push to make "I'm not accusing you" as opposed to just ""I'm not accusing you"? Gracias.
3 Answers
it's for emphasis and can be necessary if the occasion demands it, but on the whole you won't need to use it for example, a mi me gusta ayudarte or me gusta ayudarte are both fine, but you can add a me in a particularly shrill voice for extra extra emphasis
ti not tí
J'agree...