lSome verbs allow to signal that there is a second person involved by using a pronoun (le, les, lo, la, los, las) with the main verb. In these cases you have two choices: You can either use the subjunctive and a subordinate clause intoduced by "que" or you just use an infinitive and no "que":
lJuan (le) aconseja que cante su hermana. or Juan (le) aconseja a su hermana que cante. (The brackets around the pronouns mean that the use of the pronouns is optional.) but: Juan le aconseja cantar a su hermana. (The use of the pronoun is optional.)
l(Te) aconsejo que tomes el tren. (I recommend you to take the train.) but: Te aconsejo tomar el tren.
lOther verbs in this category are dejar, exigir, impedir, mandar, permitir, prohibir, rogar and sugerir.