1, word replacement: by means of synonym replacement, avoid keeping consistent with the original order and each word.

2. Sentence pattern change: When the weight of each sentence in the paper is reduced, you can change the active sentence pattern into the passive sentence pattern and the passive sentence pattern into the active sentence pattern by adjusting the sentence pattern of the whole sentence.

3. Exchange order: In order to avoid the continuous repetition of the word 13, you can adjust the order of the whole paragraph, first understand the meaning of the whole paragraph, and then exchange the order according to your own understanding.

4. Never change. It is the most effective way to read and understand the text copied from other documents in the original text, and then convert it into your own language, although this process is hard.

5. English translation method: First, put the documents with high repetition rate into translation tools, translate them from Chinese into English, and then translate them from English into Chinese, and then modify them until the sentences are fluent, which can reduce the repetition rate to a certain extent, but we must modify the sentences fluently. After all, translation software has limited IQ.

Before the reform: concentration is an effective way to improve learning efficiency. Extensive educational research and investigation have found that the more concentrated students are in their studies, the higher their academic performance. Some students, though studying for a long time, are distracted by other contents in the textbooks, resulting in unsatisfactory academic performance. Keywords: concentration and learning efficiency. Let's modify these two sentences with substitution morphology.

After the reform: concentration can effectively improve students' learning efficiency. More and more educational research data show that students who are more attentive in their studies can often achieve better academic results, while some students can't achieve good academic results even after studying for a long time because they are distracted by the contents irrelevant to knowledge points in the book.

It can be seen that the key words are not replaced, but other words are replaced, which greatly reduces the repetition rate without changing the meaning of the sentence. However, it is not enough to use this method alone. Using substitute words alone can only reduce some repetition.