Este fim de semana nós vamos a ter o campeonato de futebol Americano. Espero que os Steelers ganhem!

Very good, Adam. Just two not very important mistakes...

We seldom use the preposition "a" before a verb in the infinitive in the everyday, spoken language (at least not in the Brazilian dialect). There are some situations where it is applied, indeed, but it's not worth mentioning once they're rare.

You could also say teremos which is the verb ter in the future tense. It is slightly more formal, but yet used in the colloquial language. Whenever you're unsure about a verbal tense, try using a verb conjugator. I strongly recommend Verbix (www.verbix.com). The only bad thing about verbix is that it requires the first person singular for conjugating Portuguese verbs, so you have to know by heart at least this verbal form in order to use it. But it's not that difficult...most Portuguese verbs are conjugated in the first person singular simply by removing the infinitive marker and adding the termination o. The verbs ending in -ar are specially easy. They are always conjugated the same way.

AMAR (Infinitive marker: -ar)

Eu amo
Você ama
Ele ama
Nós amamos
Vocês amam
Eles amam


CANTAR

Eu canto
Você canta
Ele canta
Nós cantamos
Vocês cantam
Eles cantam

And second thing is...take care when using or not using the graphic accents. Sometimes, a simple accent totally changes the meaning of a word or even a whole sentence. Nos and nós aren't the same thing.

E.g.:

Você pode nos dizer onde é o w.c. ?
Can you tell us where is the w.c. ?

Nós falamos bastante.
We talk a lot.

Nos falamos bastante.
We talk a lot to each other.

De repente, nós nos olhamos.
Suddenly, we looked at each other.

E então nos perguntamos se estávamos mesmo certos...
And then we asked ourselves if were we really right...