Dicembre 20, 2019 di Yoshiko What is the past tense and past participle of "cast"? For example: Substances can be (cast) to develop new materials, Risposta: All 3 forms of this ver5b are the same. Spiegazione: The verb "cast" has the same forms in infinitive, Passato Simple and Past Participle. Other such verbi can be for example: cost, hurt, cut. So the correct sentence is: Substances can be cast to develop new materials.