investigar Present Subjunctive Conjugation
investigar — to investigate
The present subjunctive uses a 'gu' spelling change: investigue, investigues, investigue...
investigar Present Subjunctive Forms
When to Use the Present Subjunctive
Use this after expressions of doubt, desire, or necessity, such as 'Espero que investigues' (I hope you research).
Notes on investigar in the Present Subjunctive
Because the stem ends in 'g', it changes to 'gu' before the 'e' endings to keep the 'g' sound hard.
Example Sentences
Espero que investigues bien el contrato.
I hope you investigate the contract well.
tú
Es necesario que investiguemos el origen.
It is necessary that we investigate the origin.
nosotros
No creo que ellos investiguen el asunto.
I don't think they will investigate the matter.
ellos/ellas/ustedes
Common Mistakes
Mistake: investige
Correct: investigue
Why: Without the 'u', the 'g' followed by 'e' sounds like a Spanish 'j' (in-ves-ti-he).
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Related Tenses
Present
yo: investigo
Investigar is a regular -ar verb in the present indicative: investigo, investigas, investiga...
Preterite
yo: investigué
Investigar has a spelling change in the 'yo' form (investigué) to keep the hard 'g' sound.
Imperfect
yo: investigaba
Investigar is regular in the imperfect: investigaba, investigabas, investigaba...
Future
yo: investigaré
The future tense uses the full infinitive 'investigar' plus endings: investigaré, investigarás...
Conditional
yo: investigaría
The conditional adds endings to the infinitive: investigaría, investigarías, investigaría...
Imperfect Subjunctive
yo: investigara
Formed from the 'ellos' preterite: investigara, investigaras, investigara...
Affirmative Imperative
yo: investiga
Give commands: investiga (tú), investigue (usted), investiguemos (nosotros).
Negative Imperative
yo: no investigues
Negative commands use 'no' + present subjunctive: no investigues, no investigue...