Changes to the Stem

Spanish: Edexcel IGCSE, topic 10.3.2

Changes to the Stem

When a verb has an irregular stem in the 'él/ella' form in the preterite, the gerund follows the same irregular pattern (e→i and o→u). For example:

Pedir → pidiendo

Pedir → pidiendo

Venir → viniendo

Venir → viniendo

Dormir → durmiendo

Dormir → durmiendo

Preferir → prefiriendo

Preferir → prefiriendo

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