all the year round  整年

all through the night/year/one's life    整个夜/年/人的一生

all…not…  不都是……  部分否定   

allow doing/allow somebody to do  允许  某人  做某事

announce something  to  somebody   向某人宣布……

announce to  somebody  something   向某人宣布……

answer for  为……负责任

anyone who = whoever  任何人  引导主语从句   

apart from  除……外还……

appear to do  好像……

apply for  申请

apply one's minds to  专心于

appreciate doing  感激做……

as a matter of fact  实际上

as a result of  由于……

as if  似乎、好像  引导方式状语从句   

as long as  只要  引导条件状语从句  

as one body  像一个人一样

as soon as is necessary  如果可能的话尽快……

as soon as  一……就……  引导时间状语从句   

as though  似乎、好像

as well as  ①和……一样 ②与……一样好

as well  也；一样

ask   that    somebody    should   do  要求某人应该做某事  虚拟语气   

ask for a leave  请假

ask  somebody  for advice  取得某人的建议

ask some questions of  somebody   向某人提问  书面语   

at a distance  有一些距离、在远处

at a great depth  在很深处

at a loss  不知所措、困惑不解

at a low/high price  价格低  高   

at a low/high speed  速度很慢/快地……

at a mouthful  一口、满口

at a safe speed  以安全速度行驶

at a speed of  以……的速度行驶

at a time  一次；有时、曾经

at first blush  一瞥

at full speed  全速前进

at least  至少、最少

at least…if not more  如果不是更多 至少也……

at most  最多、至多

at one time  曾经、以前

at present  现在

at that very moment  就在那个时候

at the ball  在舞会上

at the beginning of  在……的开始

at the bottom of  在……的底部

at the cost of  以……为代价

at the crossing  在十字路口

at the invitation of  somebody   应某人邀请

at the latest  最迟、最晚

at the most  最多

at the price of  以……为代价

at the risk of  冒着……的危险

at the same time  同时

at the sight of  看见

at the speed of  以……的速度

at the thought of  当……想到

at the top of the voice  用最高的声音

attempt to do  尝试去做、企图去做

attend to something   注意；对……关注

attitude to/towards something   对……的态度

attract one's attention  吸引某人注意力

back and forth  来来往往地、  前后  来回地

bark at    狗  向……叫

be    good   value for money  ……值钱

be  able to do  能够……、有能力……

be  about to do when  就要做某事时 突然……

be  about to do  准备做……  不接时间状语 表示将来   

be  absent from  不在、缺席

be  absorbed in  沉迷于……、迷恋于……

be  active in  在……活跃

be  admitted into universities  被大学录取

be  afraid of doing  担心某事会发生

be  afraid of something /somebody   害怕某人  物   

be  afraid that…  恐怕……

be  afraid to do  不敢去做

be  after something /somebody   找……

be  along with  和……一起

be  an expert on/in/at something   在……是专家

be  angry at something   对某事感到生气

be  angry with  somebody /something   对某人  物  感到生气

be  anxious about  为……感到焦虑

be  anxious for something   急切地要……

be  anxious to do  急切去做……

be  ashamed of  感到羞耻、惭愧

be  at breakfast/lunch/supper  在吃早/午/晚饭

be  at the same level  在同一水平上