1，a change of pace 节奏变换

You can’t do these chemistry experiments all day long. You certainly need a change of pace.

2, a far cry from 相距甚远

The published book is far cry from the early manuscript.

3, and how 的确

A: She’s a good dancer.

B: and how.

4, a matter of time 时间问题

It is only a matter of time.

5, a phone call away 一个电话之远，愿意过来帮忙。

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

7，all along 一直

I knew it all along.

8, anything but 绝对不

I was anything but happy about going.

9, account for 解释

How do you account for it?

10, after all 到底

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 对……过敏

Oh man! Something in this room is making my eyes itch. I must be allergic to something.

12, at sb’s service 愿为某人服务

I am at your service at any time.

13, around the clock 24小时不停

Martha studied around the clock for management exam.

14, as far as I know 就我所知

15，at home with 对…..很熟悉

She is at home with problems like this.

16, back out

1) 退出

A: Wasn’t Bert supposed to sing tonight?

B: Yes, but he backed out at last minute

2）不履行

She finally backed out of her promise.

17, be cut out for 天生适合

I’m not cut out to be a hero.

18, be absorbed in

She has been absorbed in a horror fiction. I can’t tear her away.

19, be addicted to 对……上瘾

She has been addicted to drugs for years.