amount to (=to be equal to) 总计， 等于
attribute…to…(=to believe sth. to be the result of…)把...归因于.., 认为...是...的结果
on the average (=on average, on an average) 平均
(be) aware of (=be conscious of , having knowledge or consciousness)意识到，知道
at the back of (=behind) 在…后面
in the back of 在…后部(里面);
on the back of 在…后部(外面);
be on one’s back(=be ill in bed) 卧病不起
answer for (undertake responsibility for, be liable for, take charge for) 对…负责
answer to (=conform to) 适合，符合。
be anxious about 为…焦急不安; 或anxious for
apologize to sb. for sth. 为…向…道歉
appeal to sb. for sth. 为某事向某人呼吁
appeal to sb. 对某人有吸引力
apply to sb. for sth. 为…向…申请;
apply for申请;
apply to 适用
apply to 与…有关;适用
approve of (=consent to, be in favor of, favor, agree to, consider good, right) 赞成， 批准
arise from(=be caused by) 由…引起。
arrange for sb./sth. to do sth. 安排…做…
arrive on 到达;
arrive at 到达某地(小地方);得出，作出;
arrive in 到达某地(大地方);
be ashamed of (=feel shame, guilt or sorrow because of sth. done) 以…为羞耻
assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保证， 使…确信。
attach(to) (=to fix, fasten; join) 缚， 系 ,结
make an attempt at doing sth. (to do sth.) 试图做…
attend to (=give one’s attention, care and thought)注意，照顾;
attend on(upon)(=wait upon, serve, look after) 侍候，照料
attitude to/ toward …对…的态度、看法