Which is an irregular affirmative imperative form?

• A. Habla
• B. No hables
• C. No comas
• D. Haz

Answer: (D)

The key idea here is recognizing irregular tú commands. For informal you, most -ar verbs form the affirmative command by adding -a (hablar → habla), and most -er/-ir verbs by adding -e (comer → come, escribir → escribe). But some common verbs have irregular tú forms that don’t follow that pattern.

Haz is the irregular affirmative command for hacer (to do/make). It doesn’t become something like “hace” or follow the regular -ar/-er/-ir endings; instead, the form is haz. This is a standard irregular in everyday Spanish—you memorize it as one of the familiar tú commands.

In contrast, the other examples follow regular patterns: habla is a regular tú command for hablar; no hables and no comas are regular negative tú commands formed from the present subjunctive.

So Haz stands out as the irregular affirmative imperative form.