Haber vs tener

Question

I'm translating a Notimex article and came across the phrase " . . . y habremos también de emprender nuevos proyectos."

The translator gave me the same as what I was able to guess: " . . .we will also have to undertake new projects."

My question is that I thought "haber" could only be used as a helping verb with the past participle and that "tener que" is the only way to express "to have to." In other words, I was under the impression that the phrase should have been, ". . .y tendremos también que emprender nuevos proyectos."

Can you once again enlighten my sorry butt?

Answer 1

Haber de + infinitive = to have to + infinitive

It means the same thing as "tener que + infinitivo," but it is almost always used in very formal or literary writings.

Thank you, Mariana and Nikki . . . I've never come across that before but of course, my education has been limited. - GaryT, Oct 20, 2011

Answer 2

I believe that this is the "haber de" construction...

"Haber de followed by the infinitive usually means "to have to," "to be necessary," or "to be supposed to," kind of like tener que or haber que, but expressing a much weaker and often vague sense of obligation."

From spanish.about.com