单击此处编辑母版标题样式单击此处编辑母版文本样式第二级第三级第四级第五级体验汉语第一课Nǐ hǎoSentencesHello Nǐ hǎo Hello (polite form) Nín hǎoHello (polite form) Nǐmen hǎoBye