responda

In a sentence

• Por favor, responda a la encuesta antes del viernes.

  Please respond to the survey before Friday.

  Here 'responda' is used as a formal command in the third-person singular form, addressing someone politely in situations like requests or instructions.

• Espero que él responda pronto a mi pregunta.

  I hope he responds to my question soon.

  In this sentence, 'responda' is in the subjunctive mood, used to express hope or potential action pertaining to the third-person singular.

• ¿Cómo puedo asegurarme de que ella me responda?

  How can I make sure that she responds to me?

  Here 'responda' also appears in the subjunctive mood, incorporated into a question expressing a desired action, connected to the third-person singular.