You all are
You (formal), He, She, It is
For description, think of what you would say if someone asked you “What´s he like?” These are the essential qualities that define a person and probably won´t change. They can be a name or a physical description.
Yo soy Raúl. (I am Raúl.)
Yo soy alta, morena, y delgada. (I am tall, dark-skinned, and thin.)
Occupations are seen as life-long careers and are therefore seen as more “permanent” than many people would think in the United States.
Soy profesora del español. (I am a Spanish teacher.)
Ellos son estudiantes. (They are students.)
Mi padre era jardinero. (My father was a gardener.)
No Indefinite Articles
Notice that the indefinite articles un, una, unos, and unas are omitted when describing an occupation after the verb ser.
Characteristics are personality descriptions of a person. These would probably be the second thing you say to “What´s he like?”
Amalia es inteligente, atrevida, y amable. (Amalia is intelligente, daring, and friendly.)
Mi esposo es romántico y cariñoso. (My husband is romantic and caring.)
Time includes days, dates, and hours. For hours, use es for one o´clock and son for all other hours.
Hoy es miércoloes. (Today is Wednesday.)
Ayer fue mi cumpleaños. (Yesterday was my birthday.)
Ahora es la una y media. (Right now it´s one thirty.)
Son las cinco y veinticinco. (It´s five twenty five.)
As the place a person is from or the material something is made from is not going to change we use ser for origin.
Celia es de España. (Celia is from Spain.)
Adela es peruana. (Adela is Peruvian.)
Mi anillo es de oro. (My ring is gold.)
Even after someone dies or someone breaks up, relationships are described using ser.
Religion is a Relationship
Also, since religion is considered a relationship with a higher power, religions are also described using ser.
Lynne es mi madre. (Lynne is my mother.)
Marcos es mi ex-novio. (Marcos is my ex-boyfriend.)
Andrés es católico. (Andrés is Catholic.)