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【目的】了解16～30月幼儿普通话最长语句的平均句子长度随年龄增长的变化规律。【方法】采用现况定量研究方法。随机抽取沈阳市2个城区194名16～30月幼儿,家长完整填写《汉语沟通发展量表使用手册》中的幼儿量表,以词为单位计算每名幼儿最长3句话的平均句子长度(MLU3),观察MLU3随年龄增长的变化情况。【结果】184名幼儿进入研究。MLU3值随年龄增长而逐渐增加,直线回归分析示MLU3与月龄呈正相关(r=0.742);23月组MLU3值较22月明显增加,差异有统计学意义(P<0.01),余相邻各组间MLU3值差异无统计学意义。【结论】16～30月幼儿普通话最长语句的平均句子长度随着月龄的增长而不断发展,22～23月是最长语句平均句子长度发展最迅速的时期。
【Objective】 To understand the law of the average sentence length of the longest sentence in Mandarin Chinese from 16 to 30 months with age. 【Method】 Using the current quantitative research methods. A total of 194 children aged 16-30 in 2 urban districts of Shenyang were randomly selected. Parents completed the “Kindergarten Scale” in the Handbook for the Use of Chinese Communication and Development Scale, and calculated the average sentence length of each sentence up to 3 sentences (MLU3) to observe the changes of MLU3 with age. [Results] 184 infants entered the study. The linear regression analysis showed that MLU3 was positively correlated with age (r = 0.742). The MLU3 in 23 months group was significantly increased compared with that in 22 months (P <0.01), while the other adjacent groups There was no significant difference between MLU3 values. 【Conclusion】 The average sentence length of the longest sentence in Mandarin of 16-30 months develops continuously with the increase of age. From 22 to 23 months, the average sentence length of the longest sentence grows most rapidly.