to be (have a (transient) location in space). Compare ser, quedar.
¿Dónde estás? ― Where are you?
Estoy en casa. ― I am at home.
to be (Denotes a copula, in a transient fashion). Compare ser.
El tiempo estaba frío. ― The weather was cold [back then].
¿Estás feliz? ― Are you happy [right now]?
to be (Auxiliary verb for the progressive/continuous aspect) (precedes the gerund of the verb)
Ella está cantando. ― She is singing.
to be (in the passive voice sense)
Los vasos están rotos.The vases are broken. (In passive voice with estar, unlike haber, its past participle agrees with number and gender of the subject)
(reflexive) To be, feel (Denotes a copula, in a transient fashion)
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In this volume, we discuss the alphabet, definite and indefinite articles, and verbs ser and estar, among other
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