Use the present for current states, habits and actions. The subject can be omitted when the verb makes it clear.
Vosotros is informal plural you in Spain. Ustedes uses the ellos/ellas form and is the usual plural you in Latin America.
comienzoI begin (present)
comienzasyou begin (present)
comienzahe/she begins (present)
comenzamoswe begin (present)
comenzáisyou all (vosotros) begin (present)
comienzanthey begin (present)
Comenzar in the preterite tense
Use the preterite for a completed event in the past, viewed as a whole.
comencéI began (preterite)
comenzasteyou began (preterite)
comenzóhe/she began (preterite)
comenzamoswe began (preterite)
comenzasteisyou all (vosotros) began (preterite)
comenzaronthey began (preterite)
Comenzar in the imperfect tense
Use the imperfect for past habits, ongoing situations and background descriptions, without marking their endpoint.
comenzabaI used to begin (imperfect)
comenzabasyou used to begin (imperfect)
comenzabahe/she used to begin (imperfect)
comenzábamoswe used to begin (imperfect)
comenzabaisyou all (vosotros) used to begin (imperfect)
comenzabanthey used to begin (imperfect)
Comenzar in the future tense
Use the simple future for what will happen. Spanish also uses this tense for a guess about the present.
comenzaréI will begin (future)
comenzarásyou will begin (future)
comenzaráhe/she will begin (future)
comenzaremoswe will begin (future)
comenzaréisyou all (vosotros) will begin (future)
comenzaránthey will begin (future)
Comenzar in the conditional tense
Use the conditional for what would happen, a polite request or a hypothetical situation.
comenzaríaI would begin (conditional)
comenzaríasyou would begin (conditional)
comenzaríahe/she would begin (conditional)
comenzaríamoswe would begin (conditional)
comenzaríaisyou all (vosotros) would begin (conditional)
comenzaríanthey would begin (conditional)
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Comenzar conjugation chart
All six persons. Blue, bold forms differ from regular endings, including spelling changes that preserve pronunciation.
Person
Present
Preterite
Imperfect
Future
Conditional
yo
comienzo
comencé
comenzaba
comenzaré
comenzaría
tú
comienzas
comenzaste
comenzabas
comenzarás
comenzarías
él / ella / usted
comienza
comenzó
comenzaba
comenzará
comenzaría
nosotros / nosotras
comenzamos
comenzamos
comenzábamos
comenzaremos
comenzaríamos
vosotros / vosotras
comenzáis
comenzasteis
comenzabais
comenzaréis
comenzaríais
ellos / ellas / ustedes
comienzan
comenzaron
comenzaban
comenzarán
comenzarían
Comenzar in the present tense
Person
Spanish
English
yo
comienzo
I begin
tú
comienzas
you begin
él / ella / usted
comienza
he/she begins
nosotros / nosotras
comenzamos
we begin
vosotros / vosotras
comenzáis
you all (vosotros) begin
ellos / ellas / ustedes
comienzan
they begin
Comenzar in the preterite tense
Person
Spanish
English
yo
comencé
I began
tú
comenzaste
you began
él / ella / usted
comenzó
he/she began
nosotros / nosotras
comenzamos
we began
vosotros / vosotras
comenzasteis
you all (vosotros) began
ellos / ellas / ustedes
comenzaron
they began
Comenzar in the imperfect tense
Person
Spanish
English
yo
comenzaba
I used to begin
tú
comenzabas
you used to begin
él / ella / usted
comenzaba
he/she used to begin
nosotros / nosotras
comenzábamos
we used to begin
vosotros / vosotras
comenzabais
you all (vosotros) used to begin
ellos / ellas / ustedes
comenzaban
they used to begin
Comenzar in the future tense
Person
Spanish
English
yo
comenzaré
I will begin
tú
comenzarás
you will begin
él / ella / usted
comenzará
he/she will begin
nosotros / nosotras
comenzaremos
we will begin
vosotros / vosotras
comenzaréis
you all (vosotros) will begin
ellos / ellas / ustedes
comenzarán
they will begin
Comenzar in the conditional tense
Person
Spanish
English
yo
comenzaría
I would begin
tú
comenzarías
you would begin
él / ella / usted
comenzaría
he/she would begin
nosotros / nosotras
comenzaríamos
we would begin
vosotros / vosotras
comenzaríais
you all (vosotros) would begin
ellos / ellas / ustedes
comenzarían
they would begin
Is comenzar irregular?
Comenzar differs from the regular endings in the present, preterite. Changed forms include present: comienzo, comienzas, comienza; preterite: comencé. Highlighted forms include spelling changes that preserve pronunciation as well as irregular stems and endings.
Questions about comenzar
How do you conjugate comenzar in the present?
The present forms are comienzo, comienzas, comienza, comenzamos, comenzáis, comienzan, in the order yo, tú, él/ella/usted, nosotros, vosotros and ellos/ellas/ustedes.
What is the preterite of comenzar?
comencé, comenzaste, comenzó, comenzamos, comenzasteis, comenzaron. For example, comencé means “I began”.
Is comenzar irregular?
Comenzar differs from the regular endings in the present, preterite. Changed forms include present: comienzo, comienzas, comienza; preterite: comencé. Highlighted forms include spelling changes that preserve pronunciation as well as irregular stems and endings.
What is the difference between the preterite and imperfect of comenzar?
The preterite (comencé) presents a completed event; the imperfect (comenzaba) gives a past habit or background situation. The English glosses are “I began” and “I used to begin”, but context determines the best translation.
What are the future and conditional of comenzar?
The yo forms are comenzaré (“I will begin”) and comenzaría (“I would begin”). The full charts above include every person.