2.  Subordinating conjunction which also known as paired conjunctions are conjunctions that conjoin an independent clause and a dependent clause. The sentence is called as complex sentence.

3. Examples of complex sentences:

4.  The most common subordinating conjunctions in the English language include the following: after, although, as, as far as, as if, as long as, as soon as, as though, because, before, if, in order that, since, so, so that, than, though, unless, until, when, whenever, where, whereas, wherever, and while.

5.  For examples: Steven went swimming although it was raining. Give me a call whenever you have time. Since Mei Li doesn't speak English, she can't go to university in Ireland.