1. Coordinating Conjunctions

For

And

Nor

But                 FANBOYS

Or

Yet

So

Coordinators connect independent clauses.

I love you, and you love me.

S V        ,  CC  S     V

--------        -----------

   I.C.                   I.C            -> compound sentence

There should be a comma in front of CCs

2. Subordinating Conjunctions

if, when, because, while, since, although, even though

before, even if, as, as if, as though, as ~ as, where, unless

till, until, than, that, etc.

Subordinators connect 1 dependent clause and 1 independent clause.

Because I have no money, I have no car.

SC        S V                  , S  V             

----------------------  -----------

         D.C.                           I.C.           -> complex sentence

There should be a comma if there is a D.C. in front of an I.C.

I am going to help you even though I have not enough time.