a- 中文
EN
[ə] [eɪ] FR a- 
- 字首 (Prefix)
- (no longer productive) forming verbs with the sense away, up, on, out.
- arise, await
- (no longer productive) forming verbs with the sense of intensified action.
- abide, amaze
- (rare or no longer productive) in, on, at; used to show a state, condition, or manner.
- apace, afire, aboil, a-bling
- (no longer productive) In, into.
- asunder
- In the direction of, or toward.
- astern, abeam
- (archaic, dialectal) At such a time.
- Come a-morning we are going hunting.
- (archaic, dialectal) In the act or process of.
- Come morning, we are going a-hunting.
- They's asinging a song. He's aheaded to the store.
- Obsolete form of y-.
- aware, alike
- (no longer productive) forming words with the sense of wholly, or utterly out.
- abash
- Not, without, opposite of.
- amoral, asymmetry, atheism, asexual, acyclic
- (no longer productive) Towards; Used to indicate direction, reduction to, increase to, change into, or motion.
- ascend, aspire, amass, abandon, avenue
- (no longer productive) Away from.
- avert, aperient, abridge, assoil[3]
- (no longer productive) Of, from.
- anew, afresh[3]
- (no longer productive) forming verbs with the sense away, up, on, out.
Definition of a- in English Dictionary
- 词类阶层 (Part-of-Speech Hierarchy)
- 語素
- 字首
- 少见字首
- 少见字首
- 字首
- 語素
资料来源: 维基词典
在语法上，这个单字"a-"是一个語素，更具体地来说，是一个字首。