Spanish conjugation explanation
Forming the imperfect and future subjunctive verb forms
<p>The imperfect (both variants) and future subjunctive verb forms are formed by <strong>removing the <span style="font-style: italic;">-ron</span> ending from the third-person plural form of the preterite tense</strong>, and adding the appropriate personal ending.</p>
<p>For example, the third-person plural form of the verb <span style="font-style: italic;">ser</span> in the preterite tense is <span style="font-style: italic;">ellos fueron</span>, so the stem for the imperfect and future subjunctive forms will be <span style="font-style: italic;">fue-</span> (pay attention to the plural first person form: you have to put an accent mark on the stressed vowel.):</p>
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/20/" target="_blank" title="Open tense guide">Pretérito imperfecto subjuntivo (ra)</a>
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<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
yo
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">ra</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
tú
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">ras</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
él
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">ra</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
nosotros
</span><span class="irregular_conjugation" title="irregular conjugation">fué<span style="text-decoration: underline;">ramos</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vosotros
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">rais</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
ellos
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">ran</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
</div>
</div>
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/57/" target="_blank" title="Open tense guide">Pretérito imperfecto subjuntivo (se)</a>
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<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
yo
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">se</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
tú
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">ses</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
él
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">se</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
nosotros
</span><span class="irregular_conjugation" title="irregular conjugation">fué<span style="text-decoration: underline;">semos</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vosotros
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">seis</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
ellos
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">sen</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
</div>
</div>
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/21/" target="_blank" title="Open tense guide">Futuro subjuntivo</a>
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<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
yo
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">re</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
tú
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">res</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
él
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">re</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
nosotros
</span><span class="irregular_conjugation" title="irregular conjugation">fué<span style="text-decoration: underline;">remos</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vosotros
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">reis</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
ellos
</span><span class="irregular_conjugation" title="irregular conjugation">fue<span style="text-decoration: underline;">ren</span><span class="irregularity_circle">●</span></span></span>
</div>
</div>
</div>
</div>
<p>
Let's have a look at the stems for a few more common verbs:
</p>
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<div class="three_column_table">
<div><strong>Verb</strong></div>
<div><strong>Preterite P/3</strong></div>
<div><strong>Stem</strong></div>
<div><strong>pasar</strong><p>(REGULAR)</p></div>
<div>pasaron</div>
<div>pasa-</div>
<div><strong>ver</strong><p>(REGULAR)</p></div>
<div>vieron</div>
<div>vie-</div>
<div><strong>salir</strong><p>(REGULAR)</p></div>
<div>salieron</div>
<div>salie-</div>
<div><strong>estar</strong></div>
<div>estuvieron</div>
<div>estuvie-</div>
<div><strong>haber</strong></div>
<div>hubieron</div>
<div>hubie-</div>
<div><strong>tener</strong></div>
<div>tuvieron</div>
<div>tuvie-</div>
<div><strong>ir</strong></div>
<div>fueron</div>
<div>fue-</div>
<div><strong>poder</strong></div>
<div>pudieron</div>
<div>pudie-</div>
<div><strong>hacer</strong></div>
<div>hicieron</div>
<div>hicie-</div>
<div><strong>decir</strong></div>
<div>dijeron</div>
<div>dije-</div>
<div><strong>saber</strong></div>
<div>supieron</div>
<div>supie-</div>
</div>
</div>