contribuir Present Subjunctive Conjugation
contribuir — to contribute
The present subjunctive uses the 'y' stem from the 'yo' form: contribuya, contribuyas, contribuya...
contribuir Present Subjunctive Forms
When to Use the Present Subjunctive
Use this when expressing wishes, doubts, or suggestions about someone's contribution (e.g., 'I want you to contribute').
Notes on contribuir in the Present Subjunctive
Because the 'yo' form in the present indicative is 'contribuyo', the subjunctive carries that 'y' through all its forms.
Example Sentences
Espero que tú contribuyas a la causa.
I hope that you contribute to the cause.
tú
Es importante que todos contribuyamos.
It is important that we all contribute.
nosotros
Dudo que ellos contribuyan este año.
I doubt they will contribute this year.
ellos/ellas/ustedes
Common Mistakes
Mistake: Using 'contribua' instead of 'contribuya'.
Correct: contribuya
Why: The 'y' is required to maintain the spelling pattern established by the 'uir' ending.
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Related Tenses
Present
yo: contribuyo
The present tense of contribuir adds a 'y' before endings: contribuyo, contribuyes, contribuye, contribuyen.
Preterite
yo: contribuí
In the preterite, contribuir changes 'i' to 'y' in the third-person forms: contribuyó and contribuyeron.
Imperfect
yo: contribuía
The imperfect of contribuir is regular: contribuía, contribuías, contribuía, contribuíamos, contribuíais, contribuían.
Future
yo: contribuiré
The future tense of contribuir is regular: añadir the endings to the infinitive (contribuiré, contribuirás, etc.).
Conditional
yo: contribuiría
The conditional of contribuir is regular: añadir the endings -ía to the infinitive (contribuiría).
Imperfect Subjunctive
yo: contribuyera
The imperfect subjunctive uses the 'y' from the preterite: contribuyera, contribuyeras, contribuyera...
Affirmative Imperative
yo: contribuye
Use 'contribuye' (tú) or 'contribuya' (usted) to tell someone to help out.
Negative Imperative
yo: no contribuyas
All negative commands for contribuir use the 'y' stem: no contribuyas, no contribuya, no contribuyamos.