哈密赖赖
哒哒英语教的很不错的。主要得从几个方面来说的，第一个是他们的外教老师资质比较高，有教学证书还有教小孩子的多年经验，发音上也很准确。上课时是一对一跟老师视频教的，和老师聊天时是用英语聊的，感觉这种环境能让孩子学得很快的啊。
evanzheng2013
从市面上看，目前所使用的教材分两类，一种就是引进原版教材，另一种就是自研的了。DaDa(哒哒英语)引进的这种，我觉得还是不错的。只有经过多年打磨、长时间验证的成熟的原版教材，才是给孩子最好的教育资源。
猪宝0517
If a reader is lost, it is generally because the writer has not been careful enough to keep him on the path. This carelessness can take any number of forms. Perhaps a sentence is so excessively cluttered that the reader, hacking his way through the verbiage, simply doesn't know what it means. Perhaps a sentence has been so shoddily constructed that the reader could read it in any of several ways. Perhaps the writer has switched tenses, or has switched pronouns in mid-sentence, so the reader loses track of when the action took place or who is talking. Perhaps sentence B is not logical sequel to sentence A —— the writer, in whose head the connection is clear, has not bothered to provide the missing link. Perhaps the writer has used an important word incorrectly by not taking the trouble to look it up. He may think that "sanguine" and "sanguinary" mean the same thing, but the difference is a bloody big one. The reader can only infer what the writer is trying to imply.
45度向上傾斜
因为哒哒英语（即DaDa英语）的培训收费较为昂贵。
哒哒英语是一款专注于K12领域的专业在线青少儿英语教育应用。自2013年成立以来，通过不断地完善发展，哒哒英语现支持iPad双向视频互动教室，让家长可用iPhone等移动终端监控孩子学习情况。
哒哒英语主要和一些英语教育出版社合作，引进国外原版教材，并在此基础上进行本土化二次研发，针对 5-6 岁、7-9 岁、10-12岁、13-16 岁四个不同年龄段的孩子，将教材分为 20 个级别，老师也均来自英语母语的国家。
应用特色
1、一对一专属外教
所有外教均来自英国、美国、澳大利亚和加拿大以英语为母语国家。1对1专属外教，陪孩子练就纯正英文发音，培养孩子独立思考和探索的国际化思维。
2、原版引进教材
引进并同步国际学校原版教材，匹配分级阅读材料。使孩子足不出户就能享受到国际学校的教育资源。
以上内容参考 百度百科- 哒哒英语
