it is an easy tool that teaches the rules of sentences, noun, verbs, question mark, adjectives, and adverbs; prepositions, propositions, and pronoun pronouncements; punctuation; possessives; and proofreading skills for all communication. 它是一个简单的工具,可以教授句子,名词,动词,问号,形容词和副词的规则; 介词,主张和代词的声明; 标点;所有格; 以及所有交流的校对技巧