| Forma | Ejemplo | |
|---|---|---|
| Forma básica | have/has been + verbo-ing | I have been studying all day. |
| Duración | for + periodo / since + momento | for two hours / since Monday |
| Actividad reciente | evidencia en el presente | She’s tired — she’s been working. |
| vs Present Perfect simple | continuo = actividad · simple = resultado/número | been writing (actividad) / written 3 emails (resultado) |
| Verbos estativos | nunca en continuo (know, like, love, want) | I have known her (✓) / I have been knowing (✗) |