The word subject here is an adjective, and the pairing 'subject to' forms an adjective phrase.
The rulings are subject to review by a higher court.
Subject to later revision, the construction plans were approved by the board.
subject
The subject is who or what a sentence is about; the sentence should describe or tell something about the subject. The subject always needs a verb, showing what is happening in the sentence.
What is the subject of this sentence? She was the subject of an investigation.
The nominative case is a grammatical term indicating that a noun or pronoun is the subject of a sentence or clause; another term for subjective case.
This example is a question or interrogative sentence and so I do not think the term "simple subject' applies. However, if it has a subject, "what" is it.
I'm not familiar with that term.
you use it like this math is my favorite subject
The grammatical subject in the sentence is "you." The sentence is asking about the time when the person being addressed can start registering for courses for the new term.
A sentence using the word subject: My favorite subject in school was Science.
The term 'carbon dating' is a compound noun, a word for the process of determining of the age of an organic matter from the relative proportions of the carbon isotopes it contains. A noun functions as the subject of a sentence or a clause, and as the object of a verb or a preposition. Example sentence: Carbon dating has helped anthropologists speed up the process of determining the age of their specimens. (subject of the sentence)
You use shopping as a subject in a sentence like this: "Shopping is my paradise!" or "Shopping costs a lot of money."
Use is a verb so it usually comes after a subject however in an imperative sentence the verb comes first (there is no subject - the subject is implied)Use your head!