fundamentases

form-of imperfect second-person singular subjunctive

fundamentarの二人称単数未完了接続法

English Meaning

second-person singular imperfect subjunctive of fundamentar

Si fundamentases tus argumentos en hechos verificables, lograrías convencer a tus oyentes.

もしあなたが検証可能な事実に基づいて議論を展開すれば、聴衆を納得させることができたでしょう。

If you based your arguments on verifiable facts, you would succeed in convincing your listeners.