In view of the situation that primary school students don't know how to distinguish synonyms in Chinese learning, this book examines their abilities and differentiates and analyzes the similarities and differences in meaning with simple words, so as to deepen students' understanding of synonyms.At the same time, the questions and answers are corresponded one by one. Students can use folded pages to conduct self-test and check the answers, and immediately understand the problems, so as to facilitate self-study.