成语是在社会演进和语言发展的历程中形成的。绝大多数成语都是由四音节组成的固定词组,在结构上跟一般词组一样,也具有并列、偏正、主谓、动宾、动补等组合形式,因此,在平时学习中,很多学生对于成语与一般词组分辨不清,在选择运用上往往出错。那么,怎样分辨成语和一般词组呢?我们总结出了下面几种行之有效的方法。1.追根索源法 Idioms are formed in the course of social evolution and language development. The vast majority of idioms are fixed phrases composed of four syllables. Like idioms in structure, they also have a combination of parallelism, biasedness, subject-predication, verb-objective, and dynamic complement. Therefore, many students are involved in peacetime learning. For idioms and general phrases, it is difficult to distinguish between idioms and general phrases. So how do we distinguish between idioms and general phrases? We have summarized the following methods that are effective. 1. Follow the law