When a clause already contains an auxiliary such as have, will, can, or must, not follows that auxiliary directly. The main verb stays unchanged after the auxiliary chain, as in she has not finished, we will not stay, and you cannot leave. Negating modals can change meaning sharply, especially in forms like must not, which often expresses prohibition rather than simple lack of necessity.
Cuando una cláusula ya contiene un auxiliar como have, will, can o must, not va directamente después de ese auxiliar. El verbo principal permanece sin cambios tras la cadena de auxiliares, como en she has not finished, we will not stay, y you cannot leave. Negar con modales puede cambiar el significado de forma marcada, especialmente en formas como must not, que a menudo expresa prohibición en lugar de simple falta de necesidad.
| IdeaIdea. | ExampleEjemplo. |
|---|
Future auxiliaryAuxiliar de futuro. | They will not come.Ellos no vendrán. |
Ability modalModal de habilidad. | She cannot swim.Ella no puede nadar. |
Perfect auxiliaryAuxiliar perfecto. | He has not called.Él no ha llamado. |