The very basic and easy format is this
PMCC
Probe- when they ask you a Q, probe exactly what they mean, so if they ask you "How will you meet our clients expectations?"- you should then ask them what the current expectations are and find out exactly what they mean then you can
Match give a very precise matching answer that has real and specific examples that shows you have listened to the question. Keep it short, then you can
Confirm just as you finish your answer, check that your have answered fully, say something like "is that enough information for you, would you like me to go on?"
Close this is at the very end of the Interview- you have an opportunity to really sell yourself. A very short why I want this job, why I am the best for this job" couple of sentences here, ask when you will get feedback, if there is anything you could be doing in the mean time, and then of course shake hands, thank them for their time.
make sure you are listening, make sure recall and rephrase things they are telling you in the interview, mirror them. be specific, sell your skills and make sure they fit the job description.
What is the job?