Ser and estar can both be translated as "to be." Here is the English verb, fully conjugated:
to beI am
you are
he/she is
we are
you-all are
they are
Notice that these two sentences can have different meanings in English.
The apple is green.
(Meaning the apple is not ripe.)The apple is green.
(Meaning the color of the apple is green.)
In the first case, our example speaks of the condition of the apple. The apple is green because it has not yet ripened.
In the second case, our example speaks of the essential characteristics of the apple. The apple is green in color. T
In English, the verb "to be" can be used to tell how something is (the condition) and what something is (the essence).
How is the apple?
It is unripe.What color is the apple?
It is green.
In Spanish, a different verb is used to express "to be" depending on whether the speaker intends to address a condition or an essential quality.
La manzana está verde.
The apple is green. (condition)La manzana es verde.
The apple is green. (essence)
Note how the adjective "verde" actually changes meaning, depending upon whether it is used with ser or estar.
La manzana está verde.
(condition: verde = unripe)La manzana es verde.
(essential characteristic: verde = color green)
To address condition, use estar. Estar is an irregular verb.
estarestoy
estás
está
estamos
estáis
están
To address an essential quality, use ser. Ser is also irregular and must be memorized.
sersoy
eres
es
somos
sois
son
If you are talking about what something is, use ser; if you are talking about how something is, use estar.
What is she like?
She is quiet.
Use ser:
Ella es callada.How is she acting?
She is being quiet.
Use estar:
Ella está callada.
Complete List
ser (to be)soy
eres
es
somos
sois
son
estar (to be)estoy
estás
está
estamos
estáis
están
