雅思词组1:keep...in mind牢记

A:We do offer to arrange special trips if, you know, there are more than twelve people.
A:如果超过12人，我们会安排特别旅行。

B:Oh right, I'll keep that in mind.
B:好的，我会牢牢记住的。

bear...in mind

雅思词组2:keep to oneself保守秘密;不与人交际

A:To be honest, people seem to keep to themselves; they're not really very friendly.
A:坦白地说，人们似乎都不怎么与他人交往，不是十分友好。

B:Oh I'm sorry to hear that. Well, what about the actual course? You're studying...uh?
B:真遗憾，那你现在的课怎么样，你是在学……?

雅思词组3:keep watch on密切注视，密切注意

About two thousand years ago there were many soldiers standing there to keep watch on the Great Wall.
大约两千年前，那儿站立着很多士兵守卫着长城。

keep an eye on, watch out

雅思词组4:keep-fit studio健身室

A:I've played badminton in Fresham Sports Center.
A:我在弗莱沙姆运动中心打过羽毛球。

B:Have you? They've got a lot of facilities our sport center doesn't have and vice versa. We do have a keep-fit studio, which is very popular with members.
B:真的吗?他们那有很多我们运动中心所没有的运动器材，反之亦然。我们这里有一个健身房，备受会员们欢迎。

fitness room, fitness center

乳推思听力中也会出现一些和“健身”有关的场景，常用的词组有:
physical fit健身
lose some weight减肥
keep fit/stay in shap 保持体型
gain some weight增肥

雅思词组5:kick...out of开除，解雇;逐出

Please rethink the idea of kicking Linda out of work.She has been working very hard.
请重新考虑一下解雇琳达的事。她工作一直很卖力。

give...a sack

雅思词组6:kill off灭绝,杀光

Despite living in a sanctuary, which makes the lions safe from hunters, they still face a number of problems that threaten their survival. One of these is the ever-present danger of disease. This is what killed more than a third of Africa's Serengeti lions in 1994, and people are fearful that something similar could happen in the sanctuary and kill off many of the Asiatic lions there.
尽管狮子生活在保护区内，可以免受猎人的追捕，但仍面临很多威胁它们生存的问题。其中之一就是疾病一直以来所带来的危险，这就是1994年杀死1/3以上非洲塞伦盖蒂草原狮的原因，人们担心保护区内会发生类似事情而导致大量亚洲狮死亡。

get rid of

雅思词组7:kind of有点

It is kind of weird to see the teacher in the dormitory again.
在宿舍里又看到这名老师，有点奇怪。

sort of

雅思词组8:knock down拆除;(使)降低(价格)，低价售出(尤指拍卖)

Plans have been unveiled to knock down an entertainment center in the city. A famous architecture said he did not believe the building should be knocked down.
已经宣布了市中心一座娱乐中心的拆除计划。但是一位著名建筑师认为这座建筑不应该被拆除。

雅思词组9:know...backwards and forwards精通;全面而深入地了解

You can treat the instruction as material for a test you'll take and get to know it backwards and forwards in several days.
你可以把这个说明当做考试的复习材料，在几天内把它弄明白。

know...inside out

雅思词组10:known as被认为是，被称为

The Bachelor of Social Science is in one faculty within the university; that is the faculty where I work, known as Arts and Social Sciences.
社会科学学士学位由我们学校的一个系颁发，我就在该系工作，它被称做社会科学和艺术系。