on somebody 's account . for somebody 's sake为了…利益

I hope you didn't bring tea to the picnic just on my account．我希望你不要为了我而带茶来参加野餐。

Barry studied hard on his mother's account．贝利为使母亲高兴而用功读书。

 on somebody 's back . being an annoyance or bother to somebody 打扰

I can't get any work done with the children on my back from morning till night．孩子们从早到晚打搅我，我什么事也干不成。

on somebody 's bad side . not liked by somebody 使人讨厌的；不为（某人）所喜欢

Sally's boyfriend got on Father's bad side by keeping her out too late after the dance．萨莉的男朋友在舞会后没带她早点回家，她的父亲因此不喜欢他。

The boy's on his mother's bad side because he is lazy．妈妈不喜欢那男孩，因为他懒。

on somebody 's chest . feeling worried or upset心中有事；闷闷不乐

Jane looks unhappy because she has the quarrel with Sue on her chest．简显得不高兴，因为她和苏吵了架，心里有些烦闷。

on somebody 's good side . friendly with somebody ； liked by somebody 与人友善；被人喜欢

Diligent pupils get on their teachers'good side．老师总是喜欢勤奋的学生。

Successful workers stay on the good side of their bosses．成功的工人总给老板留下一个好印象。

on somebody 's hands . resting on somebody  as a responsibility 在某人手中；成为某人的负担

After everyone had bought a ticket to the dance， the club treasurer had over one hundred dollars on his hands．每人买了舞会票以后，俱乐部财务主管手头还有一百多美元。

I've enough work on my hands already and don't want any more．我已承担了大量工作，所以不想再接受任何任务了。

Time hangs heavy on his hands．时间慢得使他难受。

on somebody 's heels . following closely紧随

Little children like to follow on the heels of their elder brothers and sisters．小孩喜欢跟他们的哥哥姐姐学。

on somebody 's mind . in somebody 's thoughts想；沉思

What's on your mind? 你在想什么?

I’m glad you want to talk about this． it is been on my mind for weeks．我很高兴你要谈论这件事。我已想了好几个星期了。

on somebody 's part . as far as…concerned就…而言

The other team blamed their defeat on unfairness on the part of the referee．另一支球队把他们的失败归咎于裁判的不公正。

 on somebody 's shoulders . in somebody 's care；as somebody 's responsibility归某人管；为某人的责任

The success of the program rests on your shoulders．此项计划的成功就取决于你了。

on schedule . punctual； at the expected time在预定的时间

If my train is on schedule， I will be home by nine o'clock．若火车准点，我九点以前可以到家。

If the meeting is not held on schedule， I'll have to leave without at tending it ．要是会议不准时举行，我只好缺席了。

on second thoughts . upon reflection； after further or more deliberate consideration深思熟虑后

On second thoughts they decided to leave London．经仔细考虑，他们决定离开伦敦。

 on the air . on radio or TV在广播里或电视上

The President will be on the air at a quarter past nine tonight．总统将于今晚九时十五分发表广播讲话。

What's on the air this evening? 今晚的广播内容是什么?

on the alert . watchful注意；留神

Drivers must be on the alert for traffic signals．汽车驾驶员必须注意交通信号。

on the ball .  paying attention and doing things well留神；警觉

He's not really on the ball—he lets so many chances slip by．他确实是不留心，那么多机会都被他错过了。

He was on the ball and as soon as something went wrong with the machine，he rushed over to fix it ．他十分警觉，机器一有毛病，他就赶过去修理。

on the ball .   good at能干；熟练

Do you think he has anything on the ball? 你认为他有能力吗?

We all like to have Miss Li do the job because she has a lot on the ball．我们都想让李小姐做这件事，因为她能力很强。

on the basis of . according to按照；基于…

The judges are chosen on the basis of their qualification．法官是按照资格选出的。

on the beach . unemployed失业的；穷困潦倒的

He's on the beach for several weeks and no job seems available in the foreseeable future．他失业几个星期了，看来还不可能很快就找到工作。

He was then strictly on the beach．他那时的确穷困潦倒。

 on the beam . （of an airplane） flying in the right direction（飞机）航向正确

A radio signal tells the pilot of an airplane when he is flying on the beam．无线电信号向飞行员指明其飞行航向正确。

 on the beam .  doing well；just right正确的；干得好

Dick's answer was right on the beam．狄克的回答是正确的。

You are on the beam today． You haven't made a single mistake．你今天干得很好，没有出一点差错。

on the bench . sitting in a law court as a judge 当法官；主持审判

Judge Abbot will be on the bench this morning．艾伯特法官今天上午将主持开庭。

on the bench .  sitting among the substitute players坐冷板凳；当后备队员

The coach had to keep his star player on the bench with a sprained ankle．教练只好让他那名扭伤了踝骨的主力队员在场外候补。

on the blink . not working well； needing repair （机器、工具等）坏了；不能用

Mother called the repairman because her washing machine was on the blink．洗衣机坏了，母亲叫人来修。

Did you call about a television set on the blink? 你有没有打电话来说有架电视机坏了?