Portuguese conjugation explanation
Stem change: -e- → -i-
<p>If the last vowel in the stem of an <strong style="font-style: italic">-ir</strong> verb is <span style="font-style: italic">e</span>, the <span style="font-style: italic">e</span> changes to an <span style="font-style: italic">i</span> in the first person singular form of the present tense. The spelling change happens in all verb forms derived from this verb form as well (present subjunctive and imperative tenses). </p>
<p>Common verbs affected by this spelling change are: <span style="font-style: italic"><strong>sentir, mentir, preferir, sugerir, servir, vestir, divertir</strong></span>, etc.</p>
<p>In the following conjugation tables, the affected verb forms of <span style="font-style: italic">sentir</span> are highlighted:</p>
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/1/" target="_blank" title="Open tense guide">Presente</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eu
</span><span class="irregular_conjugation" title="irregular conjugation">minto<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">
tu
</span>mentes
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
ele
</span>mente
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
nós
</span>mentimos
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vós
</span>mentis
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eles
</span>mentem
</span>
</div>
</div>
</div>
</div>
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/8/" target="_blank" title="Open tense guide">Presente do Subjuntivo</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que eu
</span><span class="irregular_conjugation" title="irregular conjugation">minta<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que tu
</span><span class="irregular_conjugation" title="irregular conjugation">mintas<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que ele
</span><span class="irregular_conjugation" title="irregular conjugation">minta<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que nós
</span><span class="irregular_conjugation" title="irregular conjugation">mintamos<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que vós
</span><span class="irregular_conjugation" title="irregular conjugation">mintais<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que eles
</span><span class="irregular_conjugation" title="irregular conjugation">mintam<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/11/" target="_blank" title="Open tense guide">Imperativo Afirmativo</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span class="study_conjugations_pronoun conjugation_pronoun">---</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(tu)
</span>mente
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(você)
</span><span class="irregular_conjugation" title="irregular conjugation">minta<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(nós)
</span><span class="irregular_conjugation" title="irregular conjugation">mintamos<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">
(vós)
</span>menti
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(vocês)
</span><span class="irregular_conjugation" title="irregular conjugation">mintam<span class="irregularity_circle">●</span></span></span>
</div>
</div>
</div>
</div>
<div class="conjugation_explanation_title">Exceptions</div>
<ul>
<li>
<p>The verbs <strong style="font-style: italic">pedir</strong>, medir</strong> and all verbs derived from them (<strong style="font-style: italic">impedir, despedir</strong>, etc.):
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/1/" target="_blank" title="Open tense guide">Presente</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eu
</span><span class="irregular_conjugation" title="irregular conjugation">peço<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">
tu
</span>pedes
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
ele
</span>pede
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
nós
</span>pedimos
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vós
</span>pedis
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eles
</span>pedem
</span>
</div>
</div>
</div>
</div>
</li>
<li>
<p>The verbs derived from <strong style="font-style: italic">vir</strong> (<strong style="font-style: italic">devir, intervir, sobrevir</strong>):
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/1/" target="_blank" title="Open tense guide">Presente</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eu
</span><span class="irregular_conjugation" title="irregular conjugation">devenho<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">
tu
</span><span class="irregular_conjugation" title="irregular conjugation">devens<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">
ele
</span><span class="irregular_conjugation" title="irregular conjugation">devem<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">
nós
</span>devimos
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vós
</span><span class="irregular_conjugation" title="irregular conjugation">devindes<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">
eles
</span><span class="irregular_conjugation" title="irregular conjugation">devêm<span class="irregularity_circle">●</span></span></span>
</div>
</div>
</div>
</div>
</li>
<li>
<p>The verbs ending in <strong style="font-style: italic">-gredir</strong> display the vowel change in more cases (<strong style="font-style: italic">progredir, agredir, regredir, transgredir</strong>):
<div class="study_conjugations_tense_container">
<a class="study_conjugations_tense_label box_label" href="/study/tenseGuideForTense/1/" target="_blank" title="Open tense guide">Presente</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eu
</span><span class="irregular_conjugation" title="irregular conjugation">progrido<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
tu
</span><span class="irregular_conjugation" title="irregular conjugation">progrides<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
ele
</span><span class="irregular_conjugation" title="irregular conjugation">progride<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">
nós
</span>progredimos
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
vós
</span>progredis
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
eles
</span><span class="irregular_conjugation" title="irregular conjugation">progridem<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/8/" target="_blank" title="Open tense guide">Presente do Subjuntivo</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que eu
</span><span class="irregular_conjugation" title="irregular conjugation">progrida<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que tu
</span><span class="irregular_conjugation" title="irregular conjugation">progridas<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que ele
</span><span class="irregular_conjugation" title="irregular conjugation">progrida<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que nós
</span><span class="irregular_conjugation" title="irregular conjugation">progridamos<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que vós
</span><span class="irregular_conjugation" title="irregular conjugation">progridais<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
que eles
</span><span class="irregular_conjugation" title="irregular conjugation">progridam<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/11/" target="_blank" title="Open tense guide">Imperativo Afirmativo</a>
<div class="study_conjugations_conjugation conjugations_table two_columns">
<div class="study_conjugations_forms conjugation_forms">
<div class="conjugation_form">
<span class="study_conjugations_pronoun conjugation_pronoun">---</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(tu)
</span><span class="irregular_conjugation" title="irregular conjugation">progride<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(você)
</span><span class="irregular_conjugation" title="irregular conjugation">progrida<span class="irregularity_circle">●</span></span></span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(nós)
</span><span class="irregular_conjugation" title="irregular conjugation">progridamos<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">
(vós)
</span>progredi
</span>
</div>
</div>
<div class="study_conjugations_forms conjugation_forms highlighted_conjugation">
<div class="conjugation_form">
<span><span class="study_conjugations_pronoun conjugation_pronoun">
(vocês)
</span><span class="irregular_conjugation" title="irregular conjugation">progridam<span class="irregularity_circle">●</span></span></span>
</div>
</div>
</div>
</div>
</li>
</ul>