Meaning of a:
阿
abbr. for country names that begin with 阿[a1]: Algeria 阿爾及利亞|阿尔及利亚[A1er3ji2li4ya4], Afghanistan 阿富汗[A1fu4han4] etc
Tā de péngyǒu láizì Ā'ěrjílìyà.
他的朋友来自阿尔及利亚。
His friend is from Algeria.
prefix used before monosyllabic names, kinship terms etc to indicate familiarity; used in transliteration
Wǒ de péngyǒumen dōu jiào wǒ Āmíng.
我的朋友们都叫我阿明。
My friends all call me A-Ming.
Wǒ de péngyǒu jiào Ālán.
我的朋友叫阿兰。
My friend's name is Alan.
also pr. [a4]
Wǒ ā yí jīn tiān lái le.
我阿姨今天来了。
My aunt came today.
(literary) to flatter; to curry favor with
Tā zǒng shì xǐ huān ā yú fèng chéng, yǐ móu qǔ shàng sī de hǎo gǎn.
他总是喜欢阿谀奉承,以谋取上司的好感。
He always likes to flatter to gain his boss's favor.