Acoustic measurement was made of utterances of syntactically ambiguous sentences in Tokyo and Sendai Japanese, Seoul and Kyongsang Korean, Mongolian, and Turkish to observe prosodic strategies for disambiguation. Materials were sentences of the types ADV-VP1-NP-VP2 and ADJ-NP1-NP2-VP, where the former is ambiguous in terms of adverbial modification, ADV modifying either VP1 or VP2, and the latter creates ambiguity for the adjective ADJ modifying either NP1 or NP1+NP2. For these constructions, the four languages show identical constituent structures, and accordingly create same ambiguities. After defining the syntactic depth of a boundary, F0 of the phrase before and after the boundary, and duration of the syllable and pause before the boundary were measured. The results for differentiating the syntactic depth: (1) Tokyo Japanese and Kyongsang Korean make use of F0 rise after the boundary, (2) Seoul Korean lengthens the duration, (3) Turkish uses F0 rise before the boundary followed by a pause, and (4) pause is the indication for Sendai Japanese and Mongolian.