Hola, I'm having trouble with placing "a"s after certain verbs when they are the first verb in the sentence. For example, I know it goes after ir. ex: Voy a ir a la playa. But not after gustar. ex: Me gusta jugar al tennis. My question is does it go after every verb except gustar, like pensar, querrer, poder.. That subject is a little fuzzy for me so any help would be appreciated. Thanks.