1.a change of pace改變步調；換口味
You can't do these chemistry experiments all day long.You certainly need a change of pace.
2.a far cry from相距甚遠
The published book is a far cry from the early manuscript.
3.and how的確
A：She' s a good dancer.
B：And how.
4.a matter of time時間問題
It is only a matter of time.
5.a phone call away一個電話之遠，即愿意過來幫忙
If you need my help，do let me know.Just remember I am a phone call away.
6.a while back不久以前
Well，I listened to that CD you lent me a while back.
7.all along一直
I knew it all along.
8.anything but絕對不
I was anything but happy about going.
9.account for解釋
How do you account for it？
10.after all畢竟；終究
A：I' ve just seen the X-rays and your teeth look just fine.
B：I see.Then there is nothing to worry about after all.
11.allergic to對……過敏
Oh man！Something in this room is making my eyes itch.I must be allergic to something.
12.at sb' s service愿為某人服務
I am at your service at any time.
13.around the clock24小時不停
Martha studied around the clock for management exam.
14.as far as I know就我所知
But as far as I know，he once won the world champion at the Olympic Games.
15.at home with對……很熟悉
She is at home with problems like this.
16.back out
退出
A：Wasn' t Bert supposed to sing tonight？
B：Yes，but he backed out at last minute.
不履行
She finally backed out of her promise.
17.be cut out for適合于，有做某事物的天賦
She is cut out for a dancer.
18.be absorbed in全神貫注于某事物
She has been absorbed in a horrorfiction.I can' t tear her away.
19.be addicted to對某事物上癮
She has been addicted to drugs for years.
20.be attached to對某事物有感情
A：I' m amazed that you are still driving that old car of yours.I thought you would have gotten rid of it years ago.
B：It runs well and I' ve actually been quite attached to it.
