suponer Present Subjunctive Conjugation
suponer — to suppose
The present subjunctive is built from the 'yo' form 'supongo': suponga, supongas, suponga.
suponer Present Subjunctive Forms
When to Use the Present Subjunctive
Use this when you want someone to assume something, or after expressions of doubt/possibility (e.g., 'Es posible que supongan...').
Notes on suponer in the Present Subjunctive
Since the 'yo' form of the present indicative is 'supongo', the entire subjunctive carries that 'g' throughout.
Example Sentences
No creo que él suponga un problema.
I don't think he poses a problem.
él/ella/usted
Espero que no supongáis que soy rico.
I hope you (plural) don't assume I'm rich.
vosotros
Dudo que ellos supongan la verdad.
I doubt they will guess the truth.
ellos/ellas/ustedes
Common Mistakes
Mistake: Using 'supona' instead of 'suponga'.
Correct: Use suponga.
Why: The subjunctive is based on the 'yo' form 'supongo', so the 'g' must remain.
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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.
Imperfect
yo: suponía
Suponer is completely regular in the imperfect: suponía, suponías, suponía.
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.
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.