I sent this message before I got your reply cofirming I understood it.
Your answer is great; I wasn't seeking another answer. I just thought I would re-post incase you didn't feel like answering it as I ask you a load of questions.

But I understand your explanation, which is great.
I am now aware of these types of subordinate clauses and can usually identify them:
1)Complement/ Noun Clause- One type is the 'that clause' where that begins it.
2)Adjective Clause-one type is the relative clause using one of the 5 pronouns, or one of the adverbs.
3)Adverbial Clause-begins with a subordinator
4)Comparitive Clause-begins with than or as-What you have just explained to me.
And subordinate clause can either be
Finite-carry an inflected verb
Non-finite-have an uninflected verb with a verbal; that is, a to-infinitive, bare infinitive, ed or ing verb form.
You and this forum have helped me with this, and much more. I'm looking foward to learning more of the types clauses and everything and anything about English.
Oh, and Merry Xmas!