Hello, if I understood your question, you want to know how to change a declarative sentence into an interrogative sentence in spanish. 1) For yes/no questions (that is to say, questions to which the answer is yes or no), it is quite simple. You just have to change intonation, but the word order is the same. For example: Mañana viene a casa: "He/she comes home tomorrow" ¿Mañana viene a casa?: "Does he/she come home tomorrow? So, there's neither inversion of order nor use of auxiliary particles. 2) For questions with an interrogative pronoun (qué?, cómo?, cuando?, cuanto?, quien?) the pronoun is always placed at the beginning, like in english, and there isn't any other interrogative particle. But, in the case that the subject is expressed, this must be placed after the verb. Examples: ¿Qué quieres hacer hoy?: What do you want to do today? but... ¿qué quieren hacer tus padres hoy? AND NOT: *¿Que tus padres quieren hacer hoy? I hope it helped you.