"学到乘除法就要开始背九九乘法表了。"
学到乘除法时就会背九九乘法表。[{'character': '学', 'pinyin': 'xve2', 'highest pitch': 8.74, 'lowest pitch': 8.48, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '到', 'pinyin': 'dao4', 'highest pitch': 10.17, 'lowest pitch': 8.1, 'duration': 0.21, 'prosody hierarchy': '#2'}, {'character': '乘', 'pinyin': 'cheng2', 'highest pitch': 10.2, 'lowest pitch': 8.1, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '除', 'pinyin': 'chu2', 'highest pitch': 10.99, 'lowest pitch': 9.91, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '法', 'pinyin': 'fa3', 'highest pitch': 10.98, 'lowest pitch': 5.06, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 7.73, 'lowest pitch': 6.53, 'duration': 0.3, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.18}, {'character': '就', 'pinyin': 'jiou4', 'highest pitch': 9.08, 'lowest pitch': 8.11, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '会', 'pinyin': 'huei4', 'highest pitch': 8.7, 'lowest pitch': 6.8, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '背', 'pinyin': 'bei4', 'highest pitch': 8.44, 'lowest pitch': 7.22, 'duration': 0.2, 'prosody hierarchy': '#2'}, {'character': '九', 'pinyin': 'jiou2', 'highest pitch': 10.61, 'lowest pitch': 7.78, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '九', 'pinyin': 'jiou3', 'highest pitch': 10.32, 'lowest pitch': 5.82, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '乘', 'pinyin': 'cheng2', 'highest pitch': 10.2, 'lowest pitch': 5.82, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '法', 'pinyin': 'fa2', 'highest pitch': 10.67, 'lowest pitch': 9.15, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '表', 'pinyin': 'biao3', 'highest pitch': 9.64, 'lowest pitch': 2.93, 'duration': 0.36, 'prosody hierarchy': '#4'}]