According to common error types in pre proofreading text,this paper introduce the method to structure correcting knowledge sets and a automatic correcting algorithm based on this correcting knowledge sets.

This updated teaching method is based on the style of error-correction with mark,aims at learners possessing the utility performance rules from psychology to physics,meanwhile supported by the self feedback of strengthened stimulation.

What is the relationship between imaginary defence and untimely defence or defence against the third party? How can we distinguish imaginary defence from cognitive mistake in criminal law? The understanding to these questions isn t distinct yet.