My favorite subjects are history and geography.
I have several subject[s]: History, English, literature. It's not the same subject every day. (Skills for Life (Entry 1); A1; French)
"Bob" is the subject of the sentence "Bob threw the ball."
Our subject for discussion is homelessness.
She has made a series of documentaries on the subject of family relationships.
She likes swimming and practising yoga. In fact, this was the subject of our first lesson. (Preliminary English Test; B1; Romanian)
I'd tried to explain the situation, but he just changed the subject.
Well, changing the subject, I accidentally broke your beautiful vase. I'm really sorry, I'll try to find [another] vase that looks similar. (First Certificate in English; B2; Spanish)
Departure times are subject to alteration.
Of course these are only suggestions subject to changes and modifications. (Certificate in Advanced English; C1; Chinese)
The agreement is still subject to approval by the League's 30 teams and the players.
Rembrandt is the subject of her latest novel.
No matter wherever we go, enjoy[ing] the beauty of [the] city, walking through the J[ew]ish district, discuss[ing] the subject of [a] painting or just sit[ting] in silence, [the] world is real only with him. (Certificate of Proficiency in English; C2; Polish)
In prison, he was subjected to beatings and interrogations.
Homeless [people] are subjected to a very harsh and unhealt[h]y st[y]le of life. (Certificate of Proficiency in English; C2; Italian)