The Imperfect Tense of demostrar is used to describe ongoing or repeated actions in the past, for example: Demostraba mi habilidad con la guitarra todos los fines de semana. (I used to demonstrate my guitar skills every weekend.)

Demostrar is a regular -ar verb, so its conjugations in the Imperfect Tense follow the standard pattern for this verb type.

Conjugations

Conjugations of Demostrar (to demonstrate) in the Imperfect Tense tense (Castilian Spanish):

The imperfect tense of demostrar is used to describe ongoing or repeated actions in the past, as well as descriptions and states of being.

Expressing an ongoing action in the past: For example, Demostraba mi habilidad en el escenario. (I was demonstrating my ability on stage.)

Describing a repeated action in the past: For example, Cada semana demostraba mis progresos al profesor. (Every week I would demonstrate my progress to the teacher.)

Describing a state of being or description in the past: For example, La multitud demostraba su entusiasmo. (The crowd was demonstrating their enthusiasm.)

Expressing a habitual action in the past: For example, De niño, demostraba mucha curiosidad. (As a child, I would demonstrate a lot of curiosity.)

Expressing an action interrupted by another in the past: For example, Demostraba mi teoría cuando me interrumpieron. (I was demonstrating my theory when they interrupted me.)

Examples

Examples of Demostrar in the Imperfect Tense

Yo demostraba mi habilidad para cocinar platillos mexicanos. (I used to demonstrate my ability to cook Mexican dishes.)

Ellos demostraban su amor por el fútbol cada fin de semana. (They used to demonstrate their love for soccer every weekend.)

Tú demostrabas mucha paciencia con los niños. (You used to demonstrate a lot of patience with the children.)

Nosotros demostrábamos nuestro apoyo a los derechos humanos en las marchas. (We used to demonstrate our support for human rights at the marches.)

Ella demostraba su talento en la danza folclórica. (She used to demonstrate her talent in folk dancing.)

Ustedes demostraban mucho entusiasmo en las clases de zumba. (You all used to demonstrate a lot of enthusiasm in the zumba classes.)

Él demostraba sus habilidades de oratoria en los debates. (He used to demonstrate his public speaking skills in the debates.)

Vosotros demostrabais mucha creatividad en los proyectos de arte. (You all used to demonstrate a lot of creativity in the art projects.)

Ellas demostraban su compromiso con el medio ambiente reciclando. (They used to demonstrate their commitment to the environment by recycling.)

Yo demostraba mi habilidad para resolver problemas en el trabajo. (I used to demonstrate my problem-solving ability at work.)

Tú demostrabas mucha dedicación en tus estudios. (You used to demonstrate a lot of dedication in your studies.)

Nosotros demostrábamos nuestro amor por la música en los conciertos. (We used to demonstrate our love for music at concerts.)

Ellos demostraban su pasión por la fotografía en las exposiciones. (They used to demonstrate their passion for photography at exhibitions.)

Ustedes demostraban mucha solidaridad en las campañas de ayuda. (You all used to demonstrate a lot of solidarity in the aid campaigns.)

Ella demostraba su habilidad para liderar en las reuniones. (She used to demonstrate her leadership ability in meetings.)

Conjugations with English Translations

Conjugations of Demostrar (to demonstrate) in the Imperfect Tense tense (Castilian Spanish) with English Translations:

This post covers Castilian Spanish. For Latin American Spanish, click here

Synonyms

The Imperfect tense is also known as the Past Imperfect, Descriptive Past, Past Progressive, or Imperfect Indicative in English, and as Pretérito Imperfecto, Copretérito, Imperfecto de Indicativo, or Pasado Descriptivo in Spanish.