Please go to bed early since you have a test tomorrow.
Adverb clause:
Subordinating conjunction:
Word(s) modified:
adverb clause: since you have a test tomorrow.
conj: since
modifies: go (why?)
Adverb clause: since you have a test tomorrow.
Subordinating conjunction: since
Word(s) modified: go to bed early
Adverb clause: "since you have a test tomorrow."
Subordinating conjunction: "since"
Word(s) modified: The entire phrase "go to bed early" is modified by the adverb clause "since you have a test tomorrow."