‘而’字是由古文里继承过来的。在现代语文里它仍然常用,有些地方还非用不可,尤其在说明或议论的文章里,应用得更加广泛。‘而’字的主要功能是在紧缩式的判断句里自由转折,灵活运用于肯定与否定相对的複合句中,使内容清楚有力的表达出来。‘而’字即有它的特点,所以不容易用别的连词代替。下面 ’And’ word is inherited from the ancient text. It is still commonly used in modern languages, and in some places it is not necessary, especially in the narrative or discussion articles, which are more widely used. The main function of ’and’ is to make a free transition in the contractive judgment sentence, and apply it flexibly to compound sentences that are affirmative and negative in order to make the content clearly and forcefully expressed. ’And’ word has its own characteristics, it is not easy to use other conjunctions instead. the following