Questions & Answers about A visão melhorou.
Because visão is a feminine noun in Portuguese.
Portuguese nouns have grammatical gender, and the article has to match:
- a visão
- a televisão
- a decisão
There is no special logic you can always rely on here; you usually learn the noun together with its article. So it is best to memorize it as a visão, not just visão.
Melhorou is the third-person singular preterite of melhorar.
So:
- infinitive: melhorar = to improve / to get better
- melhorou = improved / got better
In this sentence, it describes a change that happened in the past and is seen as completed.