Breakdown of Preciso de dormir, estou cansado.
estar
to be (temporary / location)
cansado
tired
precisar de
to need
dormir
to sleep
Questions & Answers about Preciso de dormir, estou cansado.
Why do we need the word de after preciso?
In Portuguese, the verb precisar (to need) pairs with the preposition de. Whenever you say you need a thing or need to do an action, you almost always must include de right after it. So, "I need to sleep" translates literally to "I need of to sleep" (Preciso de dormir).
Why doesn't the sentence say Eu preciso and Eu estou?
In Portuguese, it is very common to drop subject pronouns like eu (I). The verb endings already tell us who is doing the action. Both preciso and estou end in -o, which is the standard "I" form in the present tense, making the eu completely unnecessary to include.
Would a woman say this sentence exactly the same way?
Why do we use estou for "I am" instead of sou?