Present-Tense Spelling Changes | Catalan Grammar

Catalan sometimes changes a letter inside an otherwise regular present-tense paradigm: tanco becomes tanques, menjo becomes menges, and començo becomes comences. These are usually spelling changes, not stem changes. The following vowel would alter the normal value of the consonant, so the spelling adapts to keep the stem sound stable.

This page uses contemporary general forms with Central Catalan as its main baseline. All unlabelled examples are neutral standard Catalan. The alternations are shared across standards, although regional person endings can place a different vowel after the stem.

The organizing principle: preserve the sound

Catalan spelling gives c and g different values before e/i and before a/o/u. A verb cannot simply keep the same final letter of its written stem in every cell. Compare the complete present of tancar:

Person	Form	Why this spelling?
jo	tanco	c before o represents /k/
tu	tanques	qu keeps /k/ before e
ell / ella / vostè	tanca	c before a represents /k/
nosaltres	tanquem	qu keeps /k/ before e
vosaltres	tanqueu	qu keeps /k/ before e
ells / elles / vostès	tanquen	qu keeps /k/ before e

Tanco la finestra perquè entra molt de soroll del carrer.

I'm closing the window because a lot of street noise is coming in.

Tanquem a les vuit, però demà obrim fins al migdia.

We close at eight, but tomorrow we're open until noon.

The endings still mark person and number normally. Tanco agrees with jo and tanquem with nosaltres; qu is not an extra ending. Stress also follows the regular first-conjugation pattern: the stem is stressed in tanco, tanques, tanca, and tanquen, while the ending is stressed in tanquem and tanqueu.

💡

Say the consonant family aloud: tanc-/tanqu- always has /k/. The visible alternation is the price of keeping the pronunciation constant before different vowels.

The four main consonant pairs

The same logic produces four frequent pairs. These are productive orthographic rules, but the verb's lexical family determines which pair it belongs to.

Sound family	Before a, o, u	Before e, i	Present-tense example
/k/	c	qu	tanco – tanques – tanquem
/g/	g	gu	pago – pagues – paguem
/s/ in a c/ç family	ç	c	començo – comences – comencem
palatal sound in a g/j family	j	g	menjo – menges – mengem

In pagues and paguem, the u is silent: gu before e preserves /g/. In menges and mengem, plain g before e preserves the consonant written j before a/o/u. Central pronunciation and Valencian pronunciation differ in the precise realization of that palatal consonant, but the standard alternation j/g is the same.

Pago jo el cafè i tu pagues el dinar, d'acord?

I'll pay for the coffee and you pay for lunch, okay?

Comencem la reunió ara o esperem la Marta?

Shall we start the meeting now, or wait for Marta?

Els nens mengen a l'escola, però jo menjo a casa.

The children eat at school, but I eat at home.

Do not confuse a spelling alternation with a genuine sound-changing stem. Tanco/tanquem keeps /k/ throughout; surto/sortim changes the lexical vowel and belongs on the vowel alternations page.

Diaeresis and a pronounced vowel

The diaeresis has two verbal jobs. First, ü can show that u is pronounced in güe/güi or qüe/qüi. In adequar, for example, the present has adequo, adeqües, adequa, adeqüem, adeqüeu, adeqüen: the diaeresis appears precisely where pronounced u stands before e. Second, ï can show that i forms its own syllable rather than merging into a diphthong. The high-frequency present pattern of agrair illustrates the second job:

Person	Present of agrair
jo	agraeixo
tu	agraeixes
ell / ella / vostè	agraeix
nosaltres	agraïm
vosaltres	agraïu
ells / elles / vostès	agraeixen

The dots in agraïm and agraïu keep the i syllabic. The infinitive agrair has no diaeresis because third-conjugation infinitives are a systematic orthographic exception, not because their pronunciation lacks hiatus. Similar present plurals include reduïm/reduïu and conduïm/conduïu.

Us agraïm la paciència i reduïm l'espera tant com podem.

We appreciate your patience and are reducing the wait as much as we can.

💡

A diaeresis is not a stress mark. In agraïm, it tells you to pronounce the i as a separate vowel; the ordinary stress rules still locate the stress.

Negation and weak pronouns

Weak pronouns go before an ordinary finite present form, and no precedes the pronoun: el tanco, no el tanco; ho paguem, no ho paguem; en menges, no en menges. Neither the pronoun nor negation changes the spelling rule inside the verb.

La quota no la paguem avui; la paguem divendres.

We're not paying the fee today; we're paying it on Friday.

De pa, no en menges gaire, però d'arròs en menges molt.

You don't eat much bread, but you eat a lot of rice.

The simple present can describe a habit, a current act, or a scheduled future. English may translate paguem divendres as “we're paying on Friday,” but that does not make the Catalan form progressive. Viewpoint and discourse time choose the tense; spelling only preserves the stem.

Regional person endings

The main paradigms use Central forms. (regional: Valencian) first-person singular forms of the first conjugation commonly end in -e: tanque, pague, comence, menge. The spelling is still sound-driven; the regional ending simply creates an e environment in that cell. (regional: Balearic) the first-person singular commonly has no overt ending: tanc, pag, començ, menj. These are coherent standard regional systems, not informal corruptions.

Do not mix one region's ending with another region's paradigm at random. In (formal) writing, choose the standard corresponding to your audience and keep it consistent.

Mini-dialogue

—Quan comenceu el curs? —Dilluns. La Jana i jo paguem la matrícula avui i dilluns comencem les classes.

—When do you start the course? —Monday. Jana and I are paying the registration fee today, and on Monday we start classes.

The three presents combine ordinary person endings with spelling alternations. Their English translations contain progressive forms, but Catalan chooses the neutral simple present because the context already locates the planned actions.

Contrast with past and mood

Present comencem asserts a present or planned start. Periphrastic past vam començar reports a completed start; it has no preposition a. By contrast, anar a + infinitive is a separate, restricted imminence construction, not the past.

Mood also follows meaning, not a memorized trigger. Sé que comencem a les nou asserts the schedule and uses indicative; Vull que comencem a les nou presents a desired schedule and uses subjunctive. The change c/ç or g/j remains an orthographic question inside whichever mood the clause requires.

Common Mistakes

1. Keeping c before e when the stem has /k/.

❌ Tancem la botiga a les vuit.

Incorrect — tancar needs qu before e to preserve /k/.

✅ Tanquem la botiga a les vuit.

We close the shop at eight.

2. Keeping g before e when the stem has /g/.

❌ No pagem fins divendres.

Incorrect — pagar needs silent u in paguem to preserve /g/.

✅ No paguem fins divendres.

We aren't paying until Friday.

3. Using ç before e.

❌ Començem després de dinar.

Incorrect — a c/ç family uses c before e.

✅ Comencem després de dinar.

We'll start after lunch.

4. Keeping j before e in a regular g/j family.

❌ Els divendres menjem fora.

Incorrect — menjar changes to mengem before e.

✅ Els divendres mengem fora.

On Fridays we eat out.

5. Omitting the diaeresis in a present plural.

❌ Us agraim molt l'ajuda.

Incorrect — agraïm needs ï to mark the separate vowel.

✅ Us agraïm molt l'ajuda.

We really appreciate your help.

Key Takeaways

The pairs c/qu, g/gu, ç/c, and j/g normally preserve one stem consonant before different vowels. Diaeresis marks a pronunciation that the unmarked spelling would hide, as in agraïm. Person endings, weak pronouns, tense, and mood are separate layers: first choose the form demanded by meaning and agreement, then spell that form according to its sound environment.

Now practice Catalan

Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.

Start learning Catalan →