下面给大家缩略整理了一些，详细内容请下载附件。
1,a while back 不久以前,刚才
-Sam want to be able to play in the basketball game this week ,yeah he hurt his knee pretty badly a while back ,i don't why he didn't quit right away
2,about to 正要,正准备
-i am about to go swimming
3,according to 按照,根据
-there are a big sales going on at the department store downtown this week according to Chali
4,account for 说明,解释
-how do you account for it
5,and how 对,当然,那是自然
-the concert pianoist is fantastic
and how
6,as a rule 通常
-I am not suprised you didn't like that movie,I found it really frightening myself
I did too, I don't care much for horror movie as a rule
7,at one's service 随时效劳
-Phil ,could you give me a hand with this file cabinet that belongs against the wall next to the bulletin board at your service
8,at the most 至多,最多
-has Sandy ever missed coming to one of our parties only once or twice at the most
9,back and forth 来回,往返
-most fishes can do this by waving back and forth in snacklike motion
-i don't want a racer(赛车) or touring bike(山地车) or anything, mostly I will just be using it ,a bike to get me back and forth from work
10.backup 挡住,堵住
-while i was going to come down Elm street ,but the traffic was really backed up
-the subway is running behind schedule and traffic is backed up for blocks,I don't know if we will make the seven fifteen show it's a beautiful night ,let's try to get there on foot ,and if we don't make it, let's just have dinner near the theater