《助字辨略》的作者刘淇說:“构文之道,不过实字虛字两端,实字其体骨,而虛字其性情也。盖文以代言,取肖神理,抗墜之际,軒輊异情,虛字一乖,判于燕越,柳柳州所由發哂杜温夫者邪!且一字之失,一句为之蹉跎;一句之誤,通篇为之梗塞。討論可闕如乎!”(自序)这段話說明了虛詞(虛字)的重要性。要是我們对于文言虛詞不很熟悉,閱讀古代作品就会“为之梗塞”。 Liu Qi, author of “Word Commentary” said: “The path of composition, but both ends of the actual word, its character, but also its character. International, Xuan 轾 Xunyi, virtual word a good, sentenced to Yan Yue, Willow Liuzhou by the hair Du Weinph evil! And the word of the loss, a sentence of 蹉 跎; a sentence of error, throughout the infarction. Que almost care! ”(Preface) This passage illustrates the importance of virtual words (imaginary words). If we are not familiar with the classical Chinese words, reading ancient works will be “for the infarction ”.