INTERROGATIVE PRONOUNS or WORDS are often used to ask questions One can recognize them by the accent marks. Interrogative words are also used with prepositions, as object of the prepositions. You can also change a statement to a question by just adding a pair of question marks. The conditional tense refers to acts that can be seen as hypothetical in nature. Conditions deal with imagined situations: some are possible, some are unlikely, some are impossible. In most cases we use the conditional tense in Spanish as we use “would + verb” in English.