WE USE "ALREADY" AND "YET" WITH THE PRESENT PERFECT TENSE IN ENGLISH.
We use ALREADY on AFFIRMATIVE SENTENCES. It means "YA".
I have already had my breakfast at 10 o'clock.
We use YET on INTERROGATIVE SENTENCES. It means "YA"
Have you had your lunch yet?
We use also "YET" on NEGATIVE SENTENCES. It means "TODAVÍA"
I haven't done my ket test yet.
