answer: David tells #Person1# the interviewer may ask about educational background and working background, the interviewee's qualification for the job, the reason to hire the interviewee, and the company may simply tell #Person1# what they can offer for the salary.
documents: #Person1#: David, I am going for an interview tomorrow. It's an American company. Can you give me an idea of what the interviewer will ask?
  #Person2#: Well. They may ask you to tell them more about your educational background and your working background.
  #Person1#: But they can see my resume. It's all in there.
  #Person2#: I know, but sometimes interviewers just want to hear you say it. Then you may be asked for your viewpoint on why you feel you are qualified for the job, give them all your qualifications and how you think they will fit the position you are applying for. Questions like what sort of experience do you have and what are your goals? are closely related to this.
  #Person1#: Ok. What else?
  #Person2#: They may want to know how the company will benefit and why they should hire you?
  #Person1#: I see. What about the salary?
  #Person2#: Hm, they may ask you what kind of salary you have in mind, or simply tell you what the company is offering. I think the latter is more likely for a starting position, especially if you have little experience. And if they are seriously considering hiring you, they will probably want to know when you would be available to start work. And basically, that's about it.
  #Person1#: Ok, thanks, David. You'Ve helped me a lot.
  #Person2#: Anytime. Let me know how it works out.