Irregular ER Verbs 2
Spanish: AQA A Level, topic 16.5.4
Stem Changes in the First Person Present
Some ER verbs only change their stem in the first person 'yo' form. After this, they follow the same pattern as regular ER verbs.

Hacer - to do, to make
- Hago - I do.
- Haces - you do.
- Hace - he/she does.
- Hacemos - we do.
- Hacéis - you do.
- Hacen - they do.

Poner - to put, to set
- Pongo - I put.
- Pones - you put.
- Pone - he/she puts.
- Ponemos - we put.
- Ponéis - you put.
- Ponen - they put.

Traer - to bring
- Traigo - I bring.
- Traes - you bring.
- Trae - he/she brings.
- Traemos - we bring.
- Traéis - you bring.
- Traen - they bring.
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Caerse - to fall, collapse
- me caigo - I fall.
- te caes - you fall.
- él/ella cae - he/she falls.
- nos caemos - we fall.
- vos caéis - you (plural) fall.
- ellos caen - they fall.

Other common ER verbs that change in the first person
- Conozco - I know (a person).
- Parezco - I look like.
- Agradezco - I thank.
- Sé - I know (information).
Stem Changes in the First Person
Some ER verbs only change their stem in the first person 'yo' form. After this, they follow the same pattern as regular ER verbs.

Conocer - to know, meet
- Conozco - I know.
- Conoces - you know.
- Conoce - he/she knows.
- Conocemos - we know.
- Conocéis - you know.
- Conocen - they know.

Agradecer - to thank
- Agradezco - I thank.
- Agradeces - you thank.
- Agradece - he/she thanks.
- Agradecemos - we thank.
- Agradecéis - you thank.
- Agradecen - they thank.

Desaparecer - to disappear
- Desaparezco - I disappear.
- Desapareces - you disappear.
- Desaparece - he/she disappears.
- Desaparecemos - we disappear.
- Desaparecéis - you disappear.
- Desaparecen - they disappear.

Nacer - to be born
- Nazco - I am born.
- Naces - you are born.
- Nace - he/she is born.
- Nacemos - we are born.
- Nacéis - you are born.
- Nacen - they are born.

Parecer - to seem, appear
- Parezco - I seem.
- Pareces - you seem.
- Parece - he/she/it seems.
- Parecemos - we seem.
- Parecéis - you seem.
- Parecen - they seem.

Saber - to know
- (Yo) sé - I know.
- Sabes - you know.
- Sabe - he/she knows.
- Sabemos - we know.
- Sabéis - you know.
- Saben - they know.
Test yourself on Irregular ER Verbs 2
How do you say 'they fall' in the present tense in Spanish?
How do you say 'they know' in Spanish?