(A)a/an一个（件……）；able能够；有能力的beabletodosth
能够aboard(adv
)在船(飞机)上about(adv
)大约；到处above(prep
)在……上面(adv
)在上面(adj
)上面的abroad(adv
)到（在）国外absence(n
)缺席absent(adj
)缺席；不在absolutely(adv
)绝对地；完全地academic(adj
)学术的accent(n
)口音accept(v
)承认；接受；答应account(n
)叙述；描写；报道ache(vi
)痛；疼痛achievement(n
)成就；功业；伟绩across(prep
)穿过act(v
)表演active(adj
)积极的；主的actor(n
)演员actress(n
)女演员ad(n
)广告adapt(vi
)使适应；使适合add(v
)加;增加addict(n
)对(药物等)上瘾的人；瘾君子address(n
)住处；通讯处admit(vt
)承认adult(n
)成人advantage(n
)优势；长处adventure(v
)冒险advertise(vt
)为……做广告advice(n
)忠告；劝告；建议advise(v
)忠告；劝告；建议adviser(n
)顾问affair(n
)事；事情affect(vt
)影响；对……有坏影响afford(vt
)买得起；有能力支付afraid(adj
)害怕；担心beafraidof害怕Africa(n
)非洲African(adj
)非洲的after(prep
)在……后面(adv
)后来；在后afterall毕竟；终究afternoon(n
)下午again(adv
)再一次；再；又againandagain再三地；反复地onceagain再一次against(prep
)反对；不同意
