Spanish Gerund Deep Dive

When to use -ando/-iendo and when NOT to. English -ing doesn't always equal Spanish gerund.

Gerund formation review

TypeRuleExample
-AR verbs-andohablar → hablando
-ER verbs-iendocomer → comiendo
-IR verbs-iendovivir → viviendo
Stem change (e→i)-iendopedir → pidiendo, decir → diciendo
Stem change (o→u)-iendodormir → durmiendo, morir → muriendo
Vowel + -iendo-yendoleer → leyendo, oír → oyendo, ir → yendo

When to use the gerund

1. Progressive tenses (estar + gerund)

Estoy comiendo. (I'm eating.)
Estaba leyendo. (I was reading.)
Estaré viajando. (I'll be traveling.)

2. Other verbs + gerund (ongoing action)

Sigue lloviendo. (It keeps raining.)
Llevo dos horas esperando. (I've been waiting for two hours.)
Iba caminando. (He was walking.)
Salió corriendo. (He left running.)

3. Describing how something is done

Entró gritando. (He entered shouting.)
Pasó el día estudiando. (He spent the day studying.)
Aprendí practicando. (I learned by practicing.)

When NOT to use the gerund (unlike English!)

1. After prepositions → use INFINITIVE (never gerund!)

Before eating → Antes de comer (NOT antes de comiendo)
Without knowing → Sin saber (NOT sin sabiendo)
After arriving → Después de llegar (NOT después de llegando)

2. As subject/noun → use INFINITIVE

Swimming is fun → Nadar es divertido. (NOT Nadando es divertido)
I like reading → Me gusta leer. (NOT Me gusta leyendo)

3. As adjective → use adjective or relative clause

A running man → Un hombre que corre (NOT un hombre corriendo as adjective)
Boiling water → Agua hirviendo (exception — this one IS used as adjective)

Pronoun placement with gerund

Pronouns attach to the end of the gerund (with accent!)

Estoy haciéndolo. = Lo estoy haciendo. (I'm doing it.)
Está diciéndome. = Me está diciendo. (He's telling me.)
Sigo esperándote. = Te sigo esperando. (I keep waiting for you.)
Both positions are correct and interchangeable.

English -ING vs Spanish gerund comparison

English -INGSpanishWhy
I am eating.Estoy comiendo.Progressive → gerund ✓
Before eating...Antes de comer.After preposition → infinitive
Eating is fun.Comer es divertido.As subject → infinitive
I like eating.Me gusta comer.After verb → infinitive
He entered running.Entró corriendo.Describes how → gerund ✓

Quick quiz

1. Antes de _____, come. (before leaving)

2. _____ es divertido. (Swimming — as subject)

3. Estoy _____. (eating)

4. Entró _____. (shouting — how he entered)

5. Me gusta _____. (reading — after gustar)

6. Sin _____ nada. (without saying)

7. Sigue _____. (It keeps raining.)

8. Estoy haciéndo_____. (doing it — pronoun attached)

9. dormir → gerund = _____.

10. leer → gerund = _____.

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