当涉及到英语单词的发音时，不同的拼写规则和变体会导致相同的字母或字母组合产生不同的音。以下是有关"ey"、"ea"和"ai"的一些常见单词及其发音的例子：
"ey"发 /eɪ/ 的例子：they, grey, hey, survey, convey, obey, prey, key, they're, etc.
"ea"发 /iː/ 的例子：tea, sea, bean, peace, dream, please, clean, seat, meat, etc.
"ea"发 /ɛ/ 的例子：head, dead, bread, sweat, threat, feather, leather, etc.
"ea"发 /eɪ/ 的例子：great, break, steak, create, heat, feat, beat, etc.
"ai"发 /eɪ/ 的例子：rain, pain, train, brain, paint, waist, aim, wait, etc.