中文摘要：

蒙古语陈述句和疑问句的差别主要表现在如下几个方面：1.陈述句音高曲线呈整体的下倾趋势。而疑问句音高曲线则呈从句中位置开始抬高,到句末先突降再呈句尾的上扬或句尾的先升后降趋势;2.陈述句音高走势的倾斜度明显大于疑问句;3.陈述句的音阈自前向后逐渐下降,音域自前向后逐渐收缩。而疑问句的音阈起伏度较小,句末音域呈现明显扩展;4.陈述句句首调群宽度明显小于疑问句;5.陈述句句中调域的上线和下线都以大幅度降为主,而疑问句句中调域上线,以大幅度降为主,而下线却以小幅度降为主;6.陈述句的句末调群比疑问句的句末调群相对窄;7.陈述句全句的调域自前向后逐渐收缩,而疑问句呈从句中的收敛到句末调域的明显扩展。

英文摘要：

In Mongolian,declarative and interrogative sentences differ in following aspects： 1.pitch contour of declarative sentence is generally declinated while in interrogative sentences,pitch contour goes up from the middle of a sentence,goes down sharply and goes up again at the end of a sentence,or continue to rise and goes down in the end;2.declination of pitch contour in declarative sentences is larger than that in interrogative sentences;3.in declarative sentences pitch threshold decline and voice range narrows gradually while in interrogative sentences,pitch threshold changes less and voice range expands evidently in the end of a sentence;4.at the beginning of a sentence,intonational width in declarative sentence is less than that in interrogative sentence;5.for declarative sentence,in the middle part of a sentence,the upper and lower intonation of intonational range decline sharply while for interrogative sentence,the upper intonation of intonational range declines sharply but lower intonation declines moderately;6.intonational range of the end of a sentence in declarative sentence is narrower than that in interrogative sentence;7.for declarative sentence,the whole intonational range of declarative sentence gradually narrow while for interrogative sentence,intonational range narrows from the middle part and expands in the sentence final.