call out . shout loudly 大声叫
The little boy on the watch started calling out when he saw somebody approaching stealthily．放哨的小男孩看到有人偷偷地走过来，就大声地叫喊起来。
Jane called out her boyfriend's name when she saw him across the street．简隔街看见男朋友时，就大声喊他。
call out . 召集；召来；请来
All the firemen in the city were called out to fight the big fire．城里所有的消防队员都被召集来扑灭那场大火。
Doctors are often called out in the middle of the night．医生们常常在午夜被请去出诊。
call out . summon to strike；order or bring into action 号召罢工；唤起或命令…行动
The trade union officials have called their members out（on strike）．工会号召全员罢工。
The fire brigade was called out twice yesterday．昨天消防队出动两次。
call the roll . call the names on a certain list 点名
The dean usually calls the roll before the meeting begins．系主任通常在开会前点名。
call to mind . cause somebody to remember 使想起
The film calls to mind what happened in my hometown ten years ago．这部电影使我想起了十年前我家乡所发生的事情。
call up . waken 唤醒
Please call me up at four tomorrow morning．请在明天早晨四点钟把我喊醒。
call up .telephone 给…打电话
Did anyone call me up while I was out？我不在时有人打电话给我吗？
I'll call you up when I need your help．需要你帮助时，我会给你打电话的。
call up .order to join the armed forces征召…入伍
During the war，all the young people were called up to fight on the battlefield．战争期间，所有的年轻人都被征召参战。
He got his call up papers yesterday．他昨天接到征召入伍通知书。
call up .bring to somebody 's mind 想起
This picture called up memories of our class trip．这张照片使我们想起我们班的那次旅行。
call up . 传讯；提出…供考虑
All the witnesses were called up when the trial began．审讯开始时，所有证人都被传到庭。
The design has been called up．这个设计方案已被提出议论过了。
calm down . become calm 镇定下来
Calm yourself down；there's nothing to worry about．沉着些，没有什么值得担忧的。
The tempest seems to be calming down．暴风雨似乎正在平息下来。
can but . can only 只好；只能（后接动词原形）
He can but do it by himself．他只好一个人干了。
cancel out . delete 消去
You should cancel out all the noughts．你应该消去所有的零。
cancel out . neutralize 抵消
The extra payment has cancelled out all his debts．那笔额外收入把他所有的债务都抵消了。
These two arguments actually cancel each other out．那两个论点实际上互相抵消。
cannot…too . 无论怎样也不过分
You cannot be too careful．你越小心越好。（你无论怎么小心也不为过分。）
A man cannot have too many friends．朋友越多越好。
The bad habit cannot be got rid of too soon．这个坏习惯改得越早越好。
cannot but . cannot keep from；cannot avoid 禁不住；不得不
The young man cannot but pity that poorly dressed old man．这个年轻人禁不住对那个穿着破旧的老人怜悯起来。
We could not but stop at the foot of a hill because the road was too slippery．由于路太滑，我们不得不在一座山脚下停了下来。
I cannot but admit the truth of your remarks，although they go against my interests．虽然你的话对我不利，但我不得不承认你所讲的是事实。
cannot help . can't avoid doing something ；have no control over 不得不，禁不住（与cannot but同义，但help后要接动名词，but后接动词原形）
We cannot help admiring his learning．我们不得不佩服他的学识。
After hearing the joke，we cannot help laughing．听到这个笑话，我们禁不住大笑起来。
capable of . having the ability or power for有能力干
Jack is a man capable of judging art．杰克是一个有艺术判断力的人。
He is capable of any crime．他什么坏事都能干得出来。
capable of .ready for；open to .（指事物、情况）能…的；可以…的
The situation is capable of improvement．这种状况是可以改变的。
That's capable of being understood．那是可以被理解的。
capitalize on . take advantage of；profit by 利用；从…中得益
It's important to capitalize on your opponent's mistake to win the game．利用你对手的弱点来赢这场比赛是很重要的。
Corrupt officials in old China used to capitalize on natural calamities．旧中国的贪官污吏往往利用自然灾害大发横财。
He always capitalizes on every opportunity that comes his way．他总是利用一切有利于自己的机会。
care about . be interested in；have or feel concern for 对…感兴趣；关心
I don't care about your opinion．我对你的观点不感兴趣。
She thinks only of herself；she doesn't care about other people．她只顾自己，不顾别人。
care about . be worried about；mind 对…担心；介意
Don't you care about losing your job？你难道不担心失去工作吗？
I care nothing about the matter．我对这事毫不介意。