# Spanish/Present Subjunctive

Verbs | Verb Tenses
Gramatically, the subjunctive is called a "mood". This is differentiated from a "tense" in that it does not express time per se (which is what "tense" really means). Along with the name of the mood also goes a tense. For the subjunctive mood, the tense may be present, imperfect, present perfect, or past perfect (or pluperfect). This article only discusses the present tense.
The present tense of the subjunctive mood, as with the other subjunctive tenses, is used for a variety of situations. This variety can make the subjunctive difficult to understand for English-speakers, and make students of Spanish dread the mood.
One common situation is to indicate actions which the speaker wishes will happen or wants to happen. It follows phrases such as "Espero que" (I hope that) and "Quiero que" (I want), and always "Ojalá que" (God willing/Hopefully). Similarly, another situation is where the speaker fears or doubts the action will happen. Phrases such as "Temo que" (I fear that), "No creo que" (I don't think that), "Dudo que" (I doubt that). Yet another situation is where the speaker is expressing possibilities or expressing beliefs that are impersonal yet still subjective. Examples here are "Es posible que" (It's possible that), "Es mejor que" (It's best that), "Podría ser que" (It could be that).
Note that the common thread in all these cases is that the action in the subordinate clause is not a factual statement, but something only from the realm of possibility. In some cases you are hoping it is true, in others you are doubting, denying, or speculating about its reality; but in all cases, you are essentially mooting the statement, bringing its reality up for discussion. This mooting is the essence of the subjunctive. You put the action that you are mooting in a subordinate clause, almost always joined to the main clause by "que." (In fact, this is where the name "subjunctive" came from: you are joining another idea or clause in a subordinate relationship to the main clause.)
There are some other uses of the subjunctive.
In order for the subjunctive to be used, you must have both:
* Expression of desire, doubt, hope, fear, or one of the other situations above, and
* Change of subject between independent clause and dependent clause (Yo quiero que Ud. me ayude-- I want you to help me.)

### Conjugations

Rule: The subjunctive begins with the yo-form of the present indicative. Then remove the -o and append the "opposite" endings.
Hablar hablo -> habl-
    Yo hable
    Tú hables
    Él/Ella/Ud. hable
    Nosotros hablemos
    Vosotros habléis
    Ellos/Uds. hablen
Comer como -> com-
    Yo coma
    Tú comas
    Él/Ella/Ud. coma
    Nosotros comamos
    Vosotros comáis
    Ellos/Uds. coman
Vivir vivo -> viv-
    Yo viva
    Tú vivas
    Él/Ella/Ud. viva
    Nosotros vivamos
    Vosotros viváis
    Ellos/Uds. vivan
It is important to note that the present subjunctive is taken from the first-person singular rather than other stems because of the many verbs that are irregular in the first-person singular.
    Yo tengo -> tenga
    Yo pongo -> ponga
    Yo caigo -> caiga
    Yo conozco -> conozca
    Yo permanezco -> permanezca
Seeming Exceptions
1. Even though the present subjunctive takes its form from the first-person singular, you still need to watch out for vowel changes due to stress shifting in the stem. Thus,
    Yo pueda
    Tú puedas
    Él/Ella/Ud. pueda
    Nosotros podamos (not puedamos)
    Vosotros podáis (not puedáis)
    Ellos/Uds. puedan
2. Since Spanish always tries to keep the spelling accurate to the pronunciation, in some cases the ending needs to change because the stem ends in a 'c', 'z', 'g', etc. This change normally happens in the first-person singular of -er and -ir verbs also, but it is still something to be aware of because in speaking or writing you're not always explicitly conscious of grammatical forms other than what you're using.
    Yo juego -> juegue
    Yo toco -> toque
    Yo recojo -> recoja