Student or Learner
what is the structure of good research paper? I mean the order of abstract ,introduction....
There are many Web-based resources to help you with this process. If you teacher has not given you enough guidance, you can google "How to write a research paper" and I'm sure you will find many, many sites to help you.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.