你现在的态度较之前有所改变。
在正式的教学方面，马德保终于步入正轨，开始循规蹈矩。[{'character': '在', 'pinyin': 'zai4', 'highest pitch': 10.58, 'lowest pitch': 9.73, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '正', 'pinyin': 'zheng4', 'highest pitch': 11.66, 'lowest pitch': 10.03, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '式', 'pinyin': 'shiii4', 'highest pitch': 10.03, 'lowest pitch': 7.55, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.22, 'lowest pitch': 7.33, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '教', 'pinyin': 'jiao4', 'highest pitch': 9.23, 'lowest pitch': 7.33, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '学', 'pinyin': 'xve2', 'highest pitch': 7.66, 'lowest pitch': 6.56, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '方', 'pinyin': 'fang1', 'highest pitch': 8.76, 'lowest pitch': 7.07, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '面', 'pinyin': 'mian4', 'highest pitch': 8.58, 'lowest pitch': 6.16, 'duration': 0.23, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.17}, {'character': '马', 'pinyin': 'ma3', 'highest pitch': 7.76, 'lowest pitch': 5.95, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '德', 'pinyin': 'de2', 'highest pitch': 10.68, 'lowest pitch': 5.95, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '保', 'pinyin': 'bao3', 'highest pitch': 6.28, 'lowest pitch': 5.13, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '终', 'pinyin': 'zhong1', 'highest pitch': 9.32, 'lowest pitch': 8.73, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '于', 'pinyin': 'v2', 'highest pitch': 8.73, 'lowest pitch': 7.44, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '步', 'pinyin': 'bu4', 'highest pitch': 9.11, 'lowest pitch': 7.73, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '入', 'pinyin': 'ru4', 'highest pitch': 7.98, 'lowest pitch': 7.07, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '正', 'pinyin': 'zheng4', 'highest pitch': 11.66, 'lowest pitch': 7.0, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '轨', 'pinyin': 'guei3', 'highest pitch': 7.0, 'lowest pitch': 4.36, 'duration': 0.26, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.16}, {'character': '开', 'pinyin': 'kai1', 'highest pitch': 8.01, 'lowest pitch': 7.44, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '始', 'pinyin': 'shiii3', 'highest pitch': 8.01, 'lowest pitch': 5.42, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '循', 'pinyin': 'xvn2', 'highest pitch': 8.63, 'lowest pitch': 5.85, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '规', 'pinyin': 'guei1', 'highest pitch': 10.63, 'lowest pitch': 8.63, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '蹈', 'pinyin': 'dao2', 'highest pitch': 8.24, 'lowest pitch': 6.43, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '矩', 'pinyin': 'jv3', 'highest pitch': 8.24, 'lowest pitch': 2.87, 'duration': 0.33, 'prosody hierarchy': '#4'}]