verbo to be

the verb to be is important for inglish the verb to be is ser o estar

corresponds(fits) to the Spanish verbs "to "be" epending on the sense of the phrase we will deduce of which(whom) about the two it(he,she) treats .

Mary is 20 years old / Maria tiene 20 años
I am 21 / Yo tengo 21 años
How old are you? / ¿Cuántos años tienes?

the express the sensations also the verb is used ' to be ' and equivalent is spanish on "having 'had".

Are you hungry? / ¿Tienes hambre?
He is thirsty / Tiene sed

It is quite friends