成语,不仅有统一的完整的意义,而且有为表示其意义所必需的结构形式。成语结构突出的特点是定型性。这种定型性主要表现在:(1)构成成语的成分即所使用的词,是特定的,一般不宜任意更换,如不能任意将“愚公移山”中的“愚”更换为“张”,也不能将其中的“山”更换为“海”;不能将“精打细算”中的“打”更换为“计”或者将其中的“细”更换为“密”,等等。(2)构成成语的词在成语中的排 Idioms, not only have a unified and complete meaning, but also have the necessary structural forms for expressing their meaning. The salient features of idioms are stereotypes. Such stereotypes are mainly manifested in the following aspects: (1) The composition of an idiom means that the words used are specific and generally should not be arbitrarily changed. For example, “fools” in “Yugong Yishan” can not be arbitrarily replaced by “Zhang” Replace the “mountain” with “sea” in it; you can not change “fight” in “plan” to “plan” or “thin” in it to “secret”, and so on. (2) the idioms constitute the idioms of the row