Question

What's a sub coordinate conjunction

Answer 1

A subordinate is what I'm assuming you are taking about. A subordinate conjunction is a part of speech. It connects independent and dependent clauses together. It is also referred to as subordinators. Some subordinate conjunctions may include: as, whenever, after, when, because, and since. Those are just some of many. 

Hope this helps!!

Answer 2

Hi, well a conjunction connects words, phrases, and sentences. There are two main ways. One is called a coordinating conjuction, and the other is called a subordniate conjuction. It joins dependent and indepent clauses together.

Sorry for the extras, I just wanted to give you more.