To give commands to a single person in an informal way in the negative, we use the present subjunctive in the second-person singular form, i.e., โtรบโ. In this case, the appropritae suffix is added for verbs with an "-ar" ending; in this case "-es". Thus, the verb is conjugated as โtrepesโ, and the "te" is added before because the verb is reflexive.
To give commands to a single person in an informal way in the negative, we use the present subjunctive in the second-person singular form, i.e., โtรบโ. In this case, the appropritae suffix is added for verbs with an "-ar" ending; in this case "-es". Thus, the verb is conjugated as โtrepesโ, and the "te" is added before because the verb is reflexive.