2)扩展句扩展句是用来支持或说明主题句的,是段落主题句的延伸和发展,起着辅助主题句、扩展段落中心思想的作用。通过举例说明、描写、解释阐述或论证,使读者能够理解和接受作者所表达的意思。扩展句一般要具备这样的特点:(1)清晰、详实,有较强的说服力,能清楚地表达思想;(2)条理分明, 2) Extended Sentences Sentences are used to support or explain subject sentences. They are extensions and developments of paragraph subject sentences, and they serve as auxiliary subject sentences and extend the central idea of ​​paragraphs. By illustrating, describing, interpreting, or demonstrating examples, the reader can understand and accept the meaning expressed by the author. Extended sentences generally have such characteristics: (1) They are clear, detailed, and have a strong persuasive power, they can clearly express their thoughts; (2) They are clearly defined.