1. You can prepare two electronic versions when modifying, so as not to be dissatisfied after modifying.

When modifying, delete the duplicate parts that can be deleted first. If it cannot be deleted, it should be modified in the word 15. You can add and subtract characters without changing the order.

2. After modification, a paperless duplicate checking system can be used to assist the modification. The duplicate checking system is intelligent, which can detect and mark duplicate parts, and give some suggestions, which we can modify according to.

Second, the English undergraduate thesis detection regulations:

1. If the repetition rate is between 30% and 50%, you need to modify it yourself. After the revision, you can pass the exam to participate in the college defense. Re-examination is still unqualified, according to the graduation design. Rewritten graduation design (thesis) must be submitted within 3 months, and then participate in the defense after passing the re-examination.

2. If the repetition rate is 50%, you will not graduate directly. It will take several months to rewrite the graduation thesis and submit it. You can only take part in the defense after passing the examination.