Determiners
O mês todo
Use todo after a noun like dia or noite to say all.
Choveu o dia todo.
It rained all day.
Choveu a noite toda.
It rained all night.
Use todos before a noun to say every.
Choveu todos os dias.
It rained every day.
Choveu todas as noites.
It rained every night.
Don't be so negative!
There are so many negatives in Portuguese! Use não together with nenhum.
Ela não tem nenhum irmão.
She does not have any brothers.
Alguns ou uns?
You can use algum to say some or any.
Ele escreve algumas cartas.
He writes some letters.
Tem algum dinheiro nessa bolsa?
Is there any money in that bag?
Another way to say some is using umas for feminine words and uns for masculine.
Tenho umas moedas aqui.
I have some coins here.