English papers need to be copied, because English papers also have plagiarism and other problems. Duplicate checking is a process of detecting whether English papers are duplicated with others' articles, which can effectively find similar parts in English papers, thus avoiding plagiarism or plagiarism.

When checking English papers, papertime paper checking tool is usually used, which can detect grammar and spelling errors by comparing the similarities of articles, and help the author find and correct the problems in the papers. At the same time, the standards and rules for duplicate checking of English papers are similar to those of Chinese papers, including restrictions on repetition rate and similarity.