Presente
What is happening now, habits, and general truths.
- yo demuestro
- tú demuestras
- él / ella / usted demuestra
- nosotros / nosotras demostramos
- ellos / ellas / ustedes demuestran
to demonstrate
Stem-changing verb, o → ue, gerund demostrando, past participle demostrado.
Enough to talk about the present, the past, and the future.
What is happening now, habits, and general truths.
The everyday past for a finished action.
The spoken future for plans and near events: ir a plus the infinitive.