Questions & Answers about Mi hermano corre como loco en el parque.
Spanish uses the simple present much more than English to talk about actions that are:
- happening right now
- or are habitual / repeated
So:
Mi hermano corre como loco en el parque.
= My brother runs / is running like crazy in the park.
(Most naturally understood as a habit/habitual behavior.)Mi hermano está corriendo como loco en el parque.
focuses more on right now, at this moment.
Both are grammatically correct. The original sentence sounds more like a general description of his usual behavior in the park.
In corre como loco, loco is functioning like a noun (literally “like a madman / like a crazy person”).
Because it’s used without an article (como loco, not como un loco), it feels a bit more like a set, idiomatic expression: “runs like crazy” rather than “runs like a madman.”