modal particle, adjective, punctuation, noun, verb, measure word, pronoun, numeral, place name · modal particle used at the end of a sentence to soften the tone of a question, often indicating curiosity or focus on the state of affairs.

谁在那边哭啊？

modal particle, noun, adverb, punctuation, verb, time word, adjective, particle, measure word · modal particle used at the end of an exclamatory sentence to emphasize the tone or feeling.

这里真热啊！

modal particle, punctuation, pronoun, directional, verb · modal particle at the end of a sentence showing affirmation, approval, or consent

好啊，我们走吧。

interjection, modal particle · interjection expressing surprise or sudden realization

啊！竟然下雪了，真美！

interjection, modal particle · interjection expressing surprise or amazement

啊！这件艺术品简直太神了！

modal particle · interjection expressing doubt, questioning, or asking for clarification

啊？你怎么还没出发呢？

interjection, modal particle · expression of sudden realization or recognition, such as "Oh, it's you!"

啊！原来是你呀。

modal particle · interjection expressing doubt, surprise, or a request for clarification

啊？你刚才说什么？

interjection, modal particle · interjection or grunt of agreement, often used like "uhm" or "OK"

啊，好，就这样办吧。