suponer Imperfect Conjugation
suponer — to suppose
Suponer is completely regular in the imperfect: suponía, suponías, suponía.
suponer Imperfect Forms
When to Use the Imperfect
Use the imperfect to describe ongoing assumptions or background beliefs in the past ('I used to suppose' or 'I was assuming').
Notes on suponer in the Imperfect
Suponer is regular in the imperfect. All -er verbs in this tense use the -ía ending with an accent on the 'i'.
Example Sentences
Yo suponía que vendrías más tarde.
I was assuming you would come later.
yo
Nosotros suponíamos que el precio era fijo.
We assumed the price was fixed.
nosotros
Ellas suponían que no habría problemas.
They supposed there wouldn't be any problems.
ellos/ellas/ustedes
Common Mistakes
Mistake: Forgetting the accent on the 'í'.
Correct: Always write suponía, suponías, etc.
Why: All imperfect endings for -er and -ir verbs require an accent on the 'i'.
Master Spanish verbs in context
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Related Tenses
Present
yo: supongo
Suponer follows the pattern of 'poner' in the present, with a 'go' ending in the yo form: supongo.
Preterite
yo: supuse
Suponer uses the irregular stem 'supus-' in the preterite: supuse, supusiste, supuso.
Future
yo: supondré
Suponer has an irregular stem in the future: supondré, supondrás, supondrá.
Conditional
yo: supondría
The conditional uses the same irregular stem as the future: supondría, supondrías.
Present Subjunctive
yo: suponga
The present subjunctive is built from the 'yo' form 'supongo': suponga, supongas, suponga.
Imperfect Subjunctive
yo: supusiera
Based on the preterite 'supusieron', the stem is 'supusiera-'.
Affirmative Imperative
yo: supón
The command for 'tú' is 'supón'; other forms use the 'supong-' stem.
Negative Imperative
yo: no supongas
The negative command uses 'no' plus the present subjunctive: no supongas, no suponga.