¿How can I join 2 concepts by the preposition "for" in Korean?
I don't know how to explain it well without some exaples. i want to know how to join 2 concepts/clauses by the preposition "for" (obviously in Korean).
One clause would be an action and the another one would be just a phrase made by nouns, for example in these sentence:

"Thank you very much FOR your help"

"I'm really sorry FOR my late reply"

In advance, Thank you so much for your help!! :)

Question

¿How can I join 2 concepts by the preposition "for" in Korean?
I don't know how to explain it well without some exaples. i want to know how to join 2 concepts/clauses by the preposition "for" (obviously in Korean). 
One clause would be an action and the another one would be just a phrase made by nouns, for example in these sentence:

"Thank you very much FOR your help"

"I'm really sorry FOR my late reply"

In advance, Thank you so much for your help!! :)

Answer

도와 줬어서 너무 감사합니다. Thank you very much FOR your help.
늦게 대답해서 정말 미안합니다. I'm really sorry FOR my late reply.
maybe ...서... is the answer you want.

Answer

I think you're right, I'll try to get the reply by a native speaker, anyway thank youy so much

Answer

You're welcome. But you should wait for a native to answer because I don't want to give you the wrong answer.

Answer

Thank you so much for your help Mojave! What you said is so similar to what I thought it'd be. I'd like to ask you another thing please, how can I make the second sentence?  I mean, using 느라고, could you say me? thanks a lot!!

Answer

You have to think differently in Korean. In both of your examples, you could switch the clauses around and use a different conjunction. "You gave me help AND SO thank you." = 도와 주셔서 감사합니다.  "My reply is late AND BECAUSE OF THAT I am sorry." In this case, I think the right conjunction is -느라고 - because it gives an excuse for something. But I'm not sure it can be used with adjectives.

집에서 편안하게 언어를 배울 수 있는 기회를 놓치지 마세요. 경험 많은 강사진을 살펴보고 지금 바로 첫 수업을 신청하세요!