Signal words
Adam hasn't finished his book (on Tuesday/yet).
Adam hasn't finished his book yet.
My family ate dinner together (yesterday/before).
My family ate dinner together yesterday.
Justin Bieber wrote a song about his girlfriend (when he was fifteen/lately).
Justin Bieber wrote a song about his girlfriend when he was fifteen.
Have you eaten (yesterday/already)?
Have you eaten already?
(In 2010/Recently), I celebrated my birthday.
In 2010, I celebrated my birthday.