1、above all - most importantly

2、account for - explain

3、as a matter of fact - in fact ,to speak the truth

4、as a rule - generally ;normally

5、about to - be ready to;be on the point of doing something

6、an old hand - be an experienced persom

7、any day now -soon

8、approach sb -talk to sb

9、be fed up with - be out of patience with

10、be on one's own - live independently

11、be on the safe side - take no chances

12、be out of something - have no longer in supply

13、be tired of - be bored with ,frustrated with

14、be up to ones'ears - be extremely busy

15、be up to someone -be a person's responsibility

16、be out for -trying to get

17、be out of the question - be unacceptable ,impossible

18、bite off more than one can chew - take on more than onecanhandle

19、break down - cease to n

20、break the ice - begin to be friendly wuth people onedoesn'tknow

21、break the news - inform or give bad news

22、brush up on - imporve noe's knowledge of somethingthroughstudy

23、bump into - meet unexpectedly

24、by and large - in general

25、by heart - by memory

26、by all means - absolutely ,definitely

27、by no means - in no way

28、call off -cancel

29、cheer up - be happy

30、come down with - become sick with