啊 (ā): ah!

Meanings

1 ah!
2 oh!

Characters

Same character as the toneless particle; tone marks separate the standalone-interjection use from the sentence-final softener.

Examples

啊！下雪了！

Ā! xiàxuě le!

Ah! It's snowing!

啊？你说什么？

Á? nǐ shuō shénme?

Eh? What did you say?

啊！原来是你啊！

À! yuánlái shì nǐ a!

Oh! So it was you!

Tips

register

Four toned readings, all sentence-initial cries: 啊 (1st tone) = surprise or sudden realization ('Ah! Oh!'); 啊 (rising) = querying or asking for repetition ('Eh? What?'); 啊 (3rd tone) = startled disbelief ('What?! My!'); 啊 (4th tone) = recognition or grudging agreement ('Ah, I see / uh-huh'). The character is identical — pitch contour does all the emotional work.

mistakes

Don't confuse this stand-alone interjection with the toneless sentence-final particle 啊. Position tells you which: at the START of a sentence and tone-marked → interjection; at the END and toneless → particle. Compare 啊，是你 ('oh, it's you') with 是你啊 ('it IS you').

Components

radical

口 kǒu

mouth

Left-side mouth radical 口. Sound-words and exclamations almost always carry 口 — the radical signals 'this is something coming out of a mouth, not a lexical word'. Same role in 呀, 哦, 哇, 呢, 吗.

phonetic

阿 ā

prefix for names; ah

Right side 阿 supplies the sound. 阿 is itself a phono-semantic compound (阝 + 可) and a common name-prefix in southern China (阿明, 阿姨). Here it functions purely as the sound, with 口 doing the 'this is an exclamation' work.