Ok, I couldn't find this information easily anywhere from the net, so I'm putting up my own "so many stupid questions, so many obvious answers" thread.
First of all I want to tell you that I just started to study Korean about a week ago, so I really am a new student. In my opinion the best way to approach a new language is to study it like the native children do, start from the most basic phrases and expressions and the locigally advance to more complicated structures. So I don't want to know how to say things like "I love you", "Where's the nearest subway station?", or "I'll take a beer" before I understand the grammar behind these sentences (and if i get in real trouble, I can always consult a tourist phrase book or something... ). I will probably compare Korean grammar a lot to Japanese grammar in my questions, because I've been studying Japanese about 4 years now and I find these two languages quite similar to each other. (And if someone's intrested: my native language is Finnish as you can see from all the mistakes I've made writing in English)
Then to the main point. My first question is:
1. What is the plain copula in Korean (compare to Japanese だ)? Is it 이다? Can you say for example "구영이 이다" --> "is cat" or do you need to conjucate the copula? And what is the negative plain copula (Japanese ない)? How about the past tenses of both?
Second question is related to the first:
2. Can you use plain verbs without any conjucations? I mean something like "밥을 먹다".
And the last one:
3. How many speech/politeness levels there are in Korean? (in Japanese four: casual, polite, humble, honorific) I'll really appreciate if you can give examples of these levels with the copula and some basic verb like 가다.
I think that's all for now!
I'll be really happy if you can help me, because really I couldn't find this information anywhere else...