This study is based on two preceding studies on the usage of conjunctive particle “TO” in spoken language (Ito, 2007) and in written language (Ito, 2006), and aimed to verify the validity of example sentences in Japanese language education textbooks (“The Textbooks”), focusing on example sentences of the usage of “TO”. By comparing the characteristics of “TO” which are newly extracted from The Textbooks and that of “TO” in these preceding studies. The study was conducted by extracting example sentences of “TO” from various publications: 732 examples from comic books, 609 from critic essays, and 403 from The Textbooks (“Three Materials”). Extracted examples were classified into 36 classifications and observed. As a result of this study, three common characteristics of “TO” were observed in all Three Materials (comic books, critic essays, and The Textbooks). Firstly, there is a cause-and-result relationship between the clauses before and after “TO”. Secondly, most of the example sentences from Three Materials end with present tense. Thirdly, when an example sentence ends with present tense, in most of the case the example sentence shows “general conditions” (Suzuki, 1986), in another words, the sentence described a general nature which does not change by repetition. This results verified the validity of the example sentences in The Textbook, in terms of the basic characteristics of “TO”. This study also pointed out that more of example sentences of the usage of “TO” in the current Japanese language education textbooks are in the form of written language, rather than spoken language.