This exam tips covers Errores frecuentes — Common Mistakes within Adjective agreement + position for GCSE Spanish. Revise Adjective agreement + position in Core Grammar for GCSE Spanish with 13 exam-style questions and 15 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 3 of 4 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
❌ Errores frecuentes — Common Mistakes
❌ Error 1: Mi amiga es inteligento.
✅ Correcto: Mi amiga es inteligente.
Por qué importa: Inteligente ends in -e, which means it has no separate masculine or feminine form. The same spelling is used for both genders: un chico inteligente / una chica inteligente. Adding -o to make it sound "masculine" is incorrect — there is no form inteligento in Spanish. Only adjectives ending in -o (like alto) change to -a for the feminine.
❌ Error 2: Es una grande casa.
✅ Correcto: Es una casa grande.
Por qué importa: This sentence contains two errors at once. First, descriptive adjectives in Spanish follow the noun — so casa must come before grande. Second, placing grande directly before a noun would shorten it to gran and shift its meaning to "great" (una gran casa = a great house). To say "a big house," use the full form grande in its correct position — after the noun: una casa grande.