白話字毎一個字單獨念時它的音不變, 但和其他字一起時它的音會變.
這種變音對於夲土台灣人並不覺得, 但對於不會説台灣話的人比較困難, 還好有規則可循.

Every single Taiwanese word has its fixed tone but the tone will change when connected with other words.
Native Taiwanese speakers won't have any problem on tone changes but for non-Taiwanese speakers it presents a challenge to them.
Luckily there are rules to follow to do tone change.

當二個字以上連結念出時, 最後一個字不變音, 其他字照下列圖表所示變音.
When reading two or more adjacent words, the last word does not change its tone
but the rest of the words change tones according to the figure shown below.

比如A-kong(阿公) 二字都是第一音, 但是二字一起念出時, A念成Ā, kong 仍然念 kong.
For an example,A-kong(Grandpa) both words are first tones, but when reading them together, AbecomesĀand kong has no change.

比如chá-chá(早早) 二字都是第二音, 但是二字一起念出時, 第一個 chá念成cha, 第二個chá仍然念chá.
For an example,chá-chá(early) both words are second tones, but when reading them together, the first chábecomeschaand the second chá has no change.

比如ài-khùn(愛睏) 二字都是第三音, 但是二字一起念出時, ài念成ái, kò͘ 仍然念kò͘.
For an example,ài-khùn(sleepy) both words are third tones, but when reading them together, àibecomesáiand kò͘  has no change.