Regular -IR Verbs in Portuguese

Overview

Regular -IR Verbs (Verbos Regulares em -IR) is a beginner (CEFR A1) topic in Portuguese grammar. Present tense conjugation of regular -ir verbs (partir, abrir, assistir). Endings: -o, -es, -e, -imos, -is, -em.

Understanding regular -ir verbs is essential for building correct Portuguese sentences and communicating effectively. This concept is introduced at the A1 level and forms part of the foundation for more advanced grammar structures.

Whether you are learning Brazilian or European Portuguese, mastering regular -ir verbs will significantly improve your ability to express yourself naturally and accurately in a variety of contexts.

How It Works

To conjugate regular -IR verbs, remove the -ir ending and add personal endings:

Person	Ending	partir (to leave)	abrir (to open)
eu	-o	parto	abro
tu	-es	partes	abres
ele/ela/voce	-e	parte	abre
nos	-imos	partimos	abrimos
vos	-is	partis	abris
eles/elas/voces	-em	partem	abrem

Common regular -IR verbs: partir (leave), abrir (open), assistir (watch), decidir (decide), dividir (divide), existir (exist), insistir (insist), permitir (allow).

The -IR pattern closely mirrors -ER. Differences: nos (-imos vs -emos) and vos (-is vs -eis).

Examples in Context

Portuguese	English	Note
Eu parto amanhã.	I leave tomorrow.
Tu abres a porta.	You open the door.
Ele assiste ao jogo.	He watches the game.
Nós decidimos ir.	We decide to go.
Abrimos a porta.	We open the door.
Assiste a televisao.	He watches TV.
Partem amanha.	They leave tomorrow.
Divido o bolo.	I divide the cake.

Common Mistakes

Applying wrong conjugation endings

• Wrong: Mixing up verb class endings (-AR/-ER/-IR)
• Right: Identify the verb class from the infinitive and apply the correct endings
• Why: Each verb class has distinct personal endings that must be kept separate.

Forgetting preposition requirements

• Wrong: Omitting required prepositions after certain verbs
• Right: Learn verbs together with their required prepositions
• Why: Many Portuguese verbs require specific prepositions that differ from English patterns.

Regularizing irregular forms

• Wrong: Applying regular patterns to an irregular verb
• Right: Check whether a verb is irregular before conjugating
• Why: Common verbs often have irregular forms that must be memorized.

Usage Notes

This concept appears across both Brazilian and European Portuguese, though specific usage patterns may differ between the two variants. At the A1 level, focus on understanding the core patterns before worrying about regional differences.

In everyday conversation, regular -ir verbs is used frequently in both formal and informal contexts. Pay attention to how native speakers use it in the media you consume, and note any differences between Brazilian and Portuguese sources.

Practice Tips

1. Practice regular -ir verbs with authentic Portuguese texts, listening for how native speakers use these forms in context.
2. Create flashcards with complete example sentences rather than isolated words to reinforce natural patterns.
3. Write short paragraphs using regular -ir verbs and compare them with native-written texts to identify areas for improvement.

Related Concepts

• Prerequisite: Subject Pronouns -- provides the foundational knowledge needed for regular -ir verbs