22 Ser and estar
22.1Ser
Ser is used:(a) With a noun or pronoun:Soy arquitecto. (see 34.6)
I am an architect.Ayer fue un día muy frío.
Yesterday it was a very cold day.¿Es éste su pasaporte? (see 35.3)
Is this your passport?
¡Es algo muy insólito! (see 36.7)
It’s something very unusual. 34.6 (p. 208);^35 (p. 210); 36.8 (p. 217); 36.9 (p. 217)
(b) With an infinitive:Eso es sufrir. That’s suffering.
(c) With a clause:La dificultad es que no tenemos dinero.
The difficulty is that we have no money.Note also es que...Es que se me cayó. (see 43.2)
(The fact is that) I dropped it. 43.2 (p. 254)
(d) With adverbs of place when the subject is a noun denoting an event:¿Dónde será la reunión? (see 39.2)
Where will the meeting be? 39.2 (p. 232)
(e) With a past participle to form the passive24.1 (p. 112)