First,it help the company examine the applicators impartially in the interview .Some applicators may cheat in his personal resume.Through the interview,the recruiter may judge whether a applicator has cheated in his resume and then decide whether he is suitable for the position he apply for . Second,job interview provide some applicators who have no high diploma more opportunities to gain the job.He may show his good quality in the interview .At last ,job interview promote the communication between the recruiter and the applicator. It help the applicator know more about the company’s policy ,such as the salary,the welfare.At the same time the recruiter also know what the applicator want . Focus on the specific role that you have applied for. Make sure you hold onto the adverts for all jobs that you have applied for, as these summarise for you the key details that employers are looking for. Employers particularly dislike ringing candidates for an interview only to find the candidate can’t even remember applying for the job! Have an understating of the tasks you will be expected to perform in the role and the responsibilities that you might assume. Always obtain a copy of a position description if one is available, it will help you anticipate many of the likely questions. There are a number of different approaches an interviewer can take. Perhaps the most common is the clarification interview,in which the interviewer asks general questions about points on your resume that he'd like to know more about. You may get asked what your career goals are,or what you think you can bring to the job. Know your resume,know how to make it fit the job and interviews like this should be a walk in the park.An interviewer may also throw in some doubt-resolving questions: "Why did you leave your last job? ","Are you always this late? ","Where it says on your resume,‘manufacturing mailbags for the government,’where exactly was that? " Be aware of the weaknesses on your resume and prepare some nice flowery words to cover any career cracks and flatten the interviewer's unfounded fears.希望能给分,谢谢了