Subordinate Conjunctions

Question

I was taught that subordinate conjunctions are used to link a dependent clause to an independent one.

This example was given recently in an English Grammar website and now I am confused:

"It is so cold outside, so I brought you a jacket"

Why is SO (subordinate conj.) being used, when the second clause "I brought you a jacket" is clearly an independent clause?

Only when the conjunction is added to it, does it become dependent. Surely then, that is missing the point?

Looking forward to your clarification on this. Thank you in advance

Answer 1

"So" is often classed as a "coordinating conjunction" which joins two independent clauses. It is the "S" in the acronym "FANBOYS"

"So that" is a subordinating conjunction.

He brought a coat so that she wouldn't be cold.

"she wouldn't be cold" is subordinate to "He brought a coat". It has a subject and a verb, but doesn't stand alone as an independent idea (This is a semantic fact, not a grammatical fact)

You could have said that same sentence without the word "that"

He brought a coat so she wouldn't be cold.

Here is possible to argue that "so" is acting as a subordinating conjunction.

On the other, your example shows "so" being used to link two independent clauses as a coordinating conjunction.