what type of subordinate clause is this and how is it introduced?
"Don't go out to jog until you finish your homework."
"until" is the signal/introductory word here.
Main clause = Don't go out to jog
Subordinate clause = until you finish your homework.
What is that subordinate clause telling you about a main word in the main clause?
The subordinate clause in the sentence is "until you finish your homework." It is an adverbial clause because it provides additional information about the time or condition of the main clause.
The clause is introduced by the subordinating conjunction "until." Subordinating conjunctions are words or phrases that connect a subordinate clause to a main clause and show the relationship between them. In this case, "until" indicates a condition or time frame that needs to be met before the main clause, "Don't go out to jog," can happen.