Take your pick:
- once
- while
- when
- whenever
- where
- wherever
- before
- after
+ Many more
A subordinating conjunction is the word (or words) used to join a subordinating clause to another clause / sentence. What is a subordinating clause? A subordinate clause (or dependent clause) is a clause that is a part of a complex sentence.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
