GL-6 Gwoyeu Row -iu- Finals 國語羅馬字 ㄩ 行韻母的標調法

 

In Gwoyeu Luomaatzyh (Gwoyeu Romatzyh, National Romanization), the high front rounded vowel (/y/ in IPA), is shown as two letters: iu. All 1st, 2nd and 3rd tone row -iu- finals show tone by changing the first letter of the medial vowel (i, y, e = 1st, 2nd, 3rd tone), rather than adding a letter, so they are printed in green. 4th tone finals show tone by adding one more letter at the end, so they are written in red.

國語羅馬字 ㄩ 行韻母大部分都是靠介音的改拼來標調 (iu, yu, eu = 一、二、三聲), 因此印成綠色。四聲韻母一律在末尾加字母，因此拼成紅色。

GL-3 National Romanization-- Keep, Change, Add! 國語羅馬字：留、改、加！

Variations of the base form (initial, medial and final) of National Romanization are used to spell the four tones of mandarin Chinese. Words spelled in National Romanization (Gwoyeu Luomaatzyh) have distinctive shapes which are easy to recognize. This is especially helpful for foreigners struggling to learn the four tones of Mandarin Chinese. 國語羅馬字靠基本形式（聲母、介音、韻母）的不同拼法來表示漢語的四聲。『留、改、加』這三個原則使『國羅』拼出來的字，個個有其獨特風貌、易於辨認。對於外國人學習國語的聲調非常有幫助。

1 Keep留: Keep the unchanged base form; Use it to spell most first tone words and all second tone words starting with m-, n-, l- or r. 保留基本形式，用來拼寫一般陰平（一聲）字及ㄇㄋㄌㄖ開頭的陽平（二聲）字