If you are in doubt about how to use definite articles in Portuguese, you have come to the right page.
Indeed, sometimes it might feel a bit confusing to know when to use the Portuguese definite articles.
So far we know that there are four definite articles in Portuguese, which equals to the English word "The".
We also know that the article must agree in gender and number with its noun.
So, just to remind you once again, the Portuguese definite articles are:
So, for instance, you know the word "carro" (car) is masculine singular (only one car), so all you need to do is ad "o" in front of the word "carro" -> "o carro".
The same works for feminine words like "casa" (house). In this case you ad "a" in front of the word to say "a casa" (the house).
Do you understand it so far?
And this is pretty much the norm for all nouns.
However, and in order for you to know how to use definite articles in Portuguese you need to know that the Portuguese definite articles must be used before any person's name and nouns except:
Note that it's very common to hear people saying "Ó Manuel!" This "Ó" (which sounds like the "o" in the English word "Oscar") is not a definite article but an interjection which is equivalent to "Hey Manuel...!" This "Ó" instead of "O" (without the accent on the O which sounds like "oo" is used to catch females' attention as well, like "Ó Maria!" -> "Hey Maria!".
And that's it. This is the secret of how to use definite articles in Portuguese.
I hope you've enjoyed this page and put this in practice from now on ;-).