"He de saber"

Question

I'm reading a comic and one character says this:

Miss Rudolph no está y yo he de saber cómo vais en su asignatura.

I looked up the phrase on Google and it seems like it means "I am to know..."

Is this correct?

Would that be translated as:

Miss Rudploh isn't here and I'm to know [or "I'm to find out"] how you're doing in her subject [or "class"].

In other words, "I'm expected to know" or "I'm supposed to know" or even "I'm expected to / supposed to find out"?

Answer 1

Cuando el verbo "haber" está seguido de la preposición "de + infinitivo" tiene significado obligativo, es decir una acción que debe ser hecha.

When the verb "haber" is followed by the preposition "de + infinitive" it has a must meaning, this means an action that must be done.

En inglés esto se muestra con "have to" asi que puedes, perfectamente, traducirlo por "I have to know" y es exacto.

In English this is showed as "have to" so you can, perfectly, translate it for "I have to know" and it is accurate

Muchas gracias! - Luciente, Mar 7, 2010

Answer 2

Miss Rudolph no está y yo he de saber cómo vais en su asignatura.

Why is "aquí" not present in that sentence?

With "estar" you can leave off "here/there" and it's understood. Like on the phone -¿Está Julio? (Is Julio there?) -No, no está. (No, he's not here.) - Luciente, Mar 7, 2010

In that case means that Miss Rudolph is just absent. - Zizoun, Mar 7, 2010

Answer 3

This can't be directly translated with accuracy. He de saber means I should know.

Muchas gracais! - Luciente, Mar 7, 2010

Ojalá pueda aceptar las dos respuestas...! - Luciente, Mar 7, 2010