Questions & Answers about O livro é grosso.
What does grosso mean in the context of "O livro é grosso"?
Why is the definite article O used before livro?
Why is the verb ser (i.e., é) used instead of estar in this sentence?
Does the adjective grosso change its form based on the noun's gender or number?
Yes, adjectives in Portuguese agree with the noun in gender and number. Since livro is masculine singular, the adjective takes the form grosso. If the noun were feminine the adjective would change (e.g., grossa), and for plural nouns, an -s would be added (e.g., grossos for masculine plural and grossas for feminine plural).
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