be able to 能，會
abound in 盛產，富於，充滿
be about to 即將
above all 首先，首要，尤其是
be absorbed in 專心致力於
be abundant in 富於，豐富
by accident 偶然
in accordance with 與一致;按照，根據
according as 根據而
according to 根據所說;按照
account for 說明;解釋
on account of 因爲，由於
on no account 決不
take into account 考慮;重視
accuse sb. of sth. 控告
be accustomed to 習慣於
be acquainted with 開始認識;開始瞭解
act for 代理
act on 按照而行動
act out 演出
bring into action 使行動起來
put out of action 使失去效用
take action 採取行動;提出訴訟
adapt to 適應
add up 加算，合計
add up to 合計達，總計是
in addition 另外
in addition to 除之外
be adequate for 適合