Welsh Grammar

Personal pronouns are the foundation of Welsh sentence construction and one of the first things you will learn at the A1 level. Welsh has a complete set of personal pronouns that are used with the verb "bod" (to be) and throughout many other grammatical structures, from possessive forms to conjugated prepositions.

The soft mutation (treiglad meddal) is the most common and most important of the three Welsh mutations, and understanding it is essential from the very beginning of your Welsh learning journey at the A1 level. Mutations are systematic changes to the initial consonant of a word, and they are triggered by specific grammatical contexts.

The nasal mutation (treiglad trwynol) is one of the three initial consonant mutations in Welsh. While less common than the soft mutation, it is still very important at the A1 level because it is triggered by two extremely frequent words: "fy" (my) and "yn" (in, when referring to places).

The aspirate mutation (treiglad llaes) is the least common of the three Welsh mutations, but it is still essential knowledge at the A1 level. It affects only three consonants and is triggered by a small number of specific words, making it the most straightforward mutation to learn.

Welsh has a definite article but no indefinite article, which is one of the first structural differences you will notice compared to English. At the A1 level, learning how the definite article works is essential because it appears constantly and interacts directly with the mutation system.

Every noun in Welsh is either masculine or feminine — there is no neuter gender. At the A1 level, understanding grammatical gender is crucial because it directly affects mutations after the definite article, adjective agreement, and pronoun choice.

Forming plurals in Welsh is one of the more complex aspects of the language, even at the A1 level. Unlike English, which mostly adds "-s" or "-es," Welsh uses a rich variety of strategies: suffixes, vowel changes, and even a system where the base form is plural and you add a suffix to make it singular.

The verb "bod" (to be) in the present tense is the single most important verb form in Welsh. At the A1 level, this is your gateway to constructing almost any sentence, because Welsh uses "bod" as an auxiliary verb in the vast majority of everyday statements. Where English says "I read," Welsh says "I am reading" (Dw i'n darllen) — using "bod" plus a verb-noun.

Learning to form negative sentences and questions is fundamental at the A1 level, as these patterns allow you to express disagreement, ask for information, and have real conversations. In Welsh, negation and question formation are closely linked to the verb "bod" (to be), since most everyday Welsh sentences are built around this verb.

Adjectives in Welsh work quite differently from English adjectives, and understanding their placement and mutation rules is an important A1 skill. The most striking difference is that Welsh adjectives usually come after the noun they describe, not before it as in English.

Prepositions are essential building blocks at the A1 level, allowing you to express location, direction, time, and relationships between things. Welsh has a rich set of simple (one-word) prepositions, many of which trigger soft mutation of the following word.

Learning numbers is essential at the A1 level for everyday situations like shopping, telling the time, and giving your age. Welsh has two number systems: the traditional vigesimal (base-20) system and the modern decimal system. At this level, you will focus on the modern decimal system, which is now standard in schools and everyday life.

Being able to tell the time, name days of the week, and refer to months is essential for everyday communication at the A1 level. Welsh uses the feminine pronoun "hi" for time expressions ("Mae hi'n..."), and the days and months have their own Welsh names that you will need to memorize.

The verb-noun (berfenw) is the base form of every Welsh verb, equivalent to the English infinitive ("to read," "to eat," "to go"). At the A1 level, verb-nouns are absolutely central because Welsh primarily uses them in combination with "bod" (to be) to form most tenses — a system called the periphrastic construction.

Expressing possession is a fundamental A1 skill that allows you to talk about what you own, your family, and your surroundings. Welsh has two main strategies for expressing "have": a construction with "gan" (used mainly in North Wales) and one with "gyda" (used mainly in South Wales). Both use "bod" (to be) as their foundation.

Basic expressions are your survival kit for Welsh conversation at the A1 level. These phrases cover greetings, introductions, polite requests, and essential everyday interactions. Many of these expressions are formulaic — you learn them as fixed phrases before you fully understand their grammar.

Modal verbs express ability, obligation, desire, and permission — concepts that are essential for everyday communication at the A1 level. In Welsh, modal meanings are typically expressed through periphrastic constructions using "bod" (to be) as the main verb, combined with specific words like "gallu" (can), "rhaid" (must), and "eisiau/moyn" (want).

Question words are essential tools for gathering information at the A1 level. Welsh question words include "beth" (what), "pwy" (who), "ble/lle" (where), "pryd" (when), "sut" (how), "pam" (why), and "faint" (how much/many). These words open up your ability to have real conversations and ask about the world around you.

Adverbs add essential detail to your sentences by telling you when, where, and how something happens. At the A1 level, learning common adverbs will make your Welsh much more expressive and natural-sounding. Many Welsh adverbs are formed by adding "yn" before an adjective, similar to how English adds "-ly."

Expressing what you like and dislike is one of the most common uses of language at the A1 level. Welsh uses several verbs for preferences — "hoffi" and "licio" (to like), "caru" (to love), and "casau" (to hate) — all within the familiar "bod + yn + verb-noun" pattern.

Talking about the weather is a universal conversation topic and an essential A1 skill. In Welsh, weather expressions use a consistent pattern built around "mae hi'n" (it is, literally "she is"), because the weather is always grammatically feminine in Welsh. This makes weather expressions very regular and predictable once you learn the pattern.

Food and drink vocabulary is among the most practical knowledge at the A1 level, enabling you to navigate cafes, restaurants, and social situations in Welsh-speaking communities. Welsh has its own rich culinary vocabulary, and many food-related expressions incorporate mutations and everyday grammatical patterns.

Family vocabulary is fundamental at the A1 level because talking about your family is one of the most common conversation topics. Welsh family terms provide an excellent context for practicing possessive adjectives and their associated mutations, as you naturally say things like "fy mam" (my mother), "dy dad" (your father), and "ei frawd" (his brother).

Demonstratives allow you to point things out and specify which item you mean — "this book" versus "that book." At the A1 level, learning Welsh demonstratives introduces you to another area where gender plays a role, as the standalone demonstrative pronouns have masculine and feminine forms.

The habitual present expresses routines, habits, and things you regularly do — "I get up at seven," "She works every day." At the A1 level, this is one of the most practical tenses because it allows you to talk about your daily life. In Welsh, the habitual present uses exactly the same "bod + yn + verb-noun" construction as the present continuous, with context and frequency adverbs distinguishing between the two meanings.

Expressing where things and people are is a fundamental A1 skill. Welsh uses "bod" (to be) with prepositions to describe location, following the familiar "mae + subject + preposition + place" pattern. This builds directly on your knowledge of "bod" and simple prepositions.

Expressing ability and inability is an essential A1 skill. Welsh uses "gallu" (to be able) and "methu" (to fail to / cannot) within the standard "bod" construction. Additionally, "Ga i...?" (May I...?) is used for requesting permission, and "alla i" and "fedra i" are common spoken forms for "can I."

Colour vocabulary is essential at the A1 level for describing everyday objects, clothing, and surroundings. In Welsh, colours are adjectives that follow the noun and undergo soft mutation after feminine singular nouns, just like other adjectives. This makes colours an excellent topic for practicing the gender-mutation connection.

Body parts and health expressions are practical A1 vocabulary that allows you to describe how you feel, visit a doctor, and understand basic health-related conversations. Welsh uses specific constructions for aches and illnesses, often built around "mae...gyda fi" or "mae gen i" (I have) and "mae...arna i" (literally "it is on me").

Compound prepositions are two-word (or multi-word) expressions that function as a single preposition. They are extremely common in Welsh for describing spatial relationships and are essential at the A1 level for giving and understanding directions, describing locations, and talking about the position of objects.

The imperfect tense of "bod" (to be) is your key to talking about the past at the A2 level. It expresses past states ("I was happy"), ongoing past actions ("I was working"), and habitual past actions ("I used to live in Cardiff"). This tense is the past equivalent of the present tense "dw i'n..." and follows the same periphrastic pattern.

The periphrastic past tense using "gwneud" (to do/make) as an auxiliary is the standard way to express completed past actions in spoken Welsh at the A2 level. This construction — "Wnes i + verb-noun" — is equivalent to the English simple past: "I cooked," "I read," "I went."

One of the most distinctive features of Welsh grammar is that prepositions conjugate — they change form depending on the pronoun that follows them. Instead of saying "on me" as two separate words, Welsh combines them into a single form: "arna i." This system is used extensively and is essential to master at the A2 level.

Relative clauses allow you to describe and identify things by adding extra information: "the man who works here," "the book that I read." At the A2 level, learning basic relative clauses in Welsh introduces you to the important relative pronoun "sy/sydd," which replaces "mae" when the antecedent is the subject of the relative clause.

Conjunctions and connectors are the glue that holds complex sentences together. At the A2 level, mastering common Welsh conjunctions allows you to express reasons, conditions, contrasts, and sequences — moving beyond simple sentences into more natural, flowing speech.

Imperatives allow you to give commands, make requests, and offer instructions. At the A2 level, learning both positive and negative commands is important for everyday situations: telling someone to come, sit down, or stop doing something.

The perfect tense ("I have done") and the recent past ("I have just done") are essential A2 constructions that allow you to talk about completed actions with relevance to the present moment. Welsh forms these using "bod + wedi + verb-noun" for the perfect and "bod + newydd + verb-noun" for the recent past.

While the "gwneud" (to do) auxiliary construction covers most past tense needs, four extremely common verbs have their own short-form past tenses that are used regularly in spoken Welsh: "mynd" (go), "dod" (come), "gwneud" (do/make), and "cael" (get/have). At the A2 level, learning these irregular past forms is essential because you will hear and use them constantly.

Object pronouns allow you to say who or what receives the action of a verb: "He sees me," "I love you," "She is helping him." In Welsh, object pronouns are expressed using possessive adjectives placed before the verb-noun, creating constructions that literally translate as "He is my seeing" (He sees me).

Being able to describe people's physical appearance and personality is an important A2 communication skill. Welsh uses specific vocabulary for hair, eyes, height, and build, combined with constructions you already know: "bod + yn + adjective" for qualities and "mae...ganddo/ganddi" (he/she has) for physical features.

At the A2 level, being able to express your opinions, agree, and disagree is crucial for meaningful conversation. Welsh has several useful constructions for sharing views, including "dw i'n meddwl bod..." (I think that...), "yn fy marn i" (in my opinion), and "mae'n well gen i" (I prefer).

The preterite (or simple past) of "bod" has forms beginning with "bu-": bues i, buest ti, buodd e/hi, buon ni, buoch chi, buon nhw. At the A2 level, these forms are used to express "I was (somewhere/doing something) for a specific period" — as opposed to the imperfect "roeddwn i" which describes ongoing states or habitual actions.

The future tense of "bod" allows you to talk about what will happen, make predictions, and discuss plans. At the B1 level, mastering "bydda i, byddi di, bydd e/hi, byddwn ni, byddwch chi, byddan nhw" opens up your ability to discuss future events, which is essential for planning, promising, and speculating.

While spoken Welsh primarily uses periphrastic constructions (bod + yn + verb-noun), Welsh also has inflected (short-form) verbs where person and tense are marked by endings attached directly to the verb stem. At the B1 level, understanding inflected forms is important because they appear frequently in written Welsh, formal speech, and in the past tense of several common verbs.

Conditional forms of 'bod': baswn i, baset ti, basai fe/hi, basen ni, basech chi, basen nhw. Used with 'yn' + verb-noun for 'would do' constructions.

Comparison of adjectives using equative (mor...â), comparative (-ach, mwy...na), and superlative (-af, mwyaf) forms, including common irregular adjectives.

Fronting elements for emphasis, a key feature of Welsh syntax using sy/sydd and yw/ydy constructions.

Clauses introduced by 'bod' after verbs of thinking, saying, and knowing.

Impersonal verb forms ending in -ir (present), -wyd (past), -id (conditional), used like passive constructions.

Expressing time relationships with pan, cyn, ar ôl, tra, nes, and ers.

First conditional with 'os' using future tense forms of bod.

Verbs formed from nouns/adjectives, including ym- prefix reflexive-like verbs.

Ordinal numbers and fractions including mutation patterns with 'ail' triggering soft mutation.

The versatile verb 'cael' meaning get, receive, be allowed, and forming the passive voice.

Structures for plans with 'mynd i', future 'bydda i'n', and suggesting with 'Beth am...?'

Extended relative clause constructions including indirect relative with resumptive pronoun and negative relative.

Full passive constructions using 'cael' combined with possessive + verb-noun.

Second and third conditional sentences using 'pe' with conditional and pluperfect forms.

Indirect speech using 'dweud bod' with tense backshift and noun clause restructuring.

Perfect, pluperfect, and continuous forms using 'wedi', 'yn', and 'newydd' with different tenses of bod.

Complex clauses expressing cause with 'gan fod', purpose with 'er mwyn', and result with 'felly'.

Using the 'cael' passive construction across present, past, future, and perfect tenses.

Complex tense combinations: 'bydda i wedi' for future perfect and 'baswn i wedi' for past conditional.

Advanced connectors for coherent discourse including fodd bynnag, yn ogystal â, and o ganlyniad.

Concessive constructions with 'er' and contrastive structures with 'tra bod' and 'yn hytrach na'.

Full inflected conjugations used in formal and literary Welsh, including present-future and imperfect paradigms.

Complex mutation triggers including ni/na/oni patterns and literary mixed mutation.

Formal written Welsh with 'y mae', 'yr wyf', negative 'ni/nid', and affirmative particles.

Common Welsh idioms and fixed expressions using conjugated prepositions.

Multi-clause constructions including concessive, consecutive, and literary subordination patterns.

Understanding the spectrum from colloquial to formal Welsh with key differences in each register.

Understanding cynghanedd (Welsh strict-meter poetry) and modern literary Welsh style.

Avoiding English calques and maintaining idiomatic Welsh in translation.

Welsh-specific discourse features: tag questions, focus particles, hedging, and information structure.

Understanding older Welsh literary forms from the Mabinogion and medieval poetry.

Key North-South dialect differences in vocabulary, verb forms, and pronunciation.

Language of law, governance, and official documents in Welsh-medium administration.

Informal spoken Welsh: contractions, slang, filler words, and the gap between written and spoken language.

Language of Welsh-medium broadcasting and journalism with standardized vocabulary.

Understanding Welsh place name elements and historical grammar revealed in toponymy.