So you use the subjunctive to talk about it.
The subjunctive forms look very much like the formal command forms, but
conjugated in all the persons, all the numbers, using the opposite theme vowel.
Again, if you have an -ar verb, you're going to use -e.
If you have an -er or an -ir verb, you're going to use -a.
So let's look at some verbs.
Okay, [FOREIGN], to buy.
So the subjunctive forms in all of the first,
second, third singular and
plural endings would be [FOREIGN].
And for a verb like [FOREIGN], it would be [FOREIGN].
And for a verb like [FOREIGN],
it would be [FOREIGN].
For your stem-changing verbs like [FOREIGN],
you're going to have almost the same irregularity that
you see in the present tense, but using the opposite theme vowels.
So for [FOREIGN],
you have [FOREIGN].
And for [FOREIGN],
you have [FOREIGN].
And for severe,
you have [FOREIGN].
Now, you also have those verbs that in the first person of
the present tense are completely irregular.
And that then becomes not only the command form, but
the basis for all of the subjunctive forms.
So take a verb like [FOREIGN], right?
So then you have [FOREIGN].
A verb like [FOREIGN], you have [FOREIGN].
A verb like [FOREIGN].
A verb like [FOREIGN].
A verb like [FOREIGN].
A verb like [FOREIGN].
A verb like [FOREIGN].
A verb like [FOREIGN].