It is the (of a feminine noun)
"Es interesante la clase" means "the class is interesting" in English.
"Cual es la pregunta" translates to "What is the question" in English.
"it is the mouth"
This is the life!
"La maestra es una pendeja" translates to "The teacher is an idiot" in English.
"La mujer es pelirroja" means "The woman is redhead" in English.
"Tu es la ..." means "you are the ...". "Tu es là" (accented "à") means you are here.
What is life?
who is the professor
It means: Is the one.
It means: It is spring.
What(cual) is(es) the date(la fecha) tomorrow (manana)?