| Persona | imperfect | conditional | future | subjunctive | present | preterite |
|---|---|---|---|---|---|---|
| yo | había | habría | habré | haya | he | hube |
| tú | habías | habrías | habrás | hayas | has | hubiste |
| él / ella | había | habría | habrá | haya | ha | hubo |
| nosotros | habíamos | habríamos | habremos | hayamos | hemos | hubimos |
| ustedes | habían | habrían | habrán | hayan | han | hubieron |
In Spain: vosotros form— imperfect: habíais, conditional: habríais, future: habréis, subjunctive: hayáis, present: habéis, preterite: hubisteis
The 'vosotros' form is used in Spain for the informal second-person plural. In its primary role as an auxiliary verb, it is followed by a past participle (e.g., 'habéis vivido').
I have worked a lot this week.
There are two apples in the kitchen.
When I arrived, they had already left.
There was a problem with the reservation.
By next year, we will have already finished university.
Tomorrow there will be a party at Ana's house.
I don't think that there is an easy solution.
If I had known, I would have called you.
one must / it is necessary to
We need to buy more milk. / One must buy more milk.
to have to / to be supposed to (formal)
I must confess that I did not read the book.
you're welcome / don't mention it