定语句中从句是主句中名词的扩展成分 ,在语义上对事物加以修饰 ,限定或揭示其特征 ,从句借助关联词который ,какой ,что ,где,куда ,откуда ,когда等与主句相连。可见 ,就从句和主句的位置而言 ,又分为限制类型和扩展延伸类型 ,其中限定类型 Clauses in fixed sentences are extensions of nouns in the main clause, which are semantically modified to define or reveal their features. Clauses are linked to the main clause by means of the related words который, какой, что, где, куда, откуда, когда and so on. Visible, in terms of the position of the clause and the main clause, is divided into limited type and extended extension type, which limited type