分类：教育/科学-外语学习-英语考试
问题：Arethereanyrulesabouttheposition? 
Are there any ru about the position of tone marks in Chinese Pinyin?Such as ui iu ect.
回答：Hi, I am HelenZhang, a fessional Chinese language teacher from China. There are mainly three rulesabout the position of tone marks:1) The tone marks should be putabove a vowel if there is only one vowel in a syllable. For example: mā, pí, bà.2) The tone mark should be putabove the main vowel， if a syllable contains two or more vowels.For example: māo, mēi, kǒu.3) The tone mark should be putabove the latter vowel if a syllable contains a final “iu” or “ui.” Forexample: diū, guī. I hope that can bea help to you.If you have anyquestions about Chinese Pinyin, just feel free to ask me at helen.zhang@ ,I am very happy to hear from you.If you want tolearn more about Chinese Pinyin, I recommend you to have a Free lesson about ChinesePinyin at