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