I wrote down, I noted
Eu anotei o número de telefone dele num pedaço de papel.
I wrote his phone number down on a piece of paper.
Anotei tudo para poder lhe dar uma cópia.
I wrote everything down so I could give you a copy.
Eu anotei o endereço para você.
I wrote down the address for you.
I wrote down the phone number.
O caderno está em branco ainda, não anotei nada da aula.
My notebook is still blank; I didn't write anything down during class.
I wrote down his phone number.