01. account for

[1].说明(原因等)；

例如:His illness account for his absence from school. 他因病未能去上学。

That accounts for it. 原来如此。

   [2].(将保管的款项)记账；

   [3].对……负责( answer for )。

   例如:The President and the President alone must account for his government's reforms.

02. add up to

   [1].合计，总计(amount to ,count up to )

   例如: For a hit show, profits can add up to millions of dollars.

   [2].结果。Guess what you add up to?

03. allow for

   [1].考虑到(take into consideration)；

例如:You have to allow for a certain amount of error.

           The Agency's budget simply did not allow for such a massive increase

   [2].原谅，体谅。

   例如:You should allow for his youth. 你应当体谅他还年轻。

04. arrive at

   **在表示“到达”的具体含义时，arrive at/in =get to =reach ;在表示“达成”等抽象含义时，只用arrive at或 reach。.

When you arrive at something such as a decision, you decide something after thinking about it or discussing it.

   例如: These figures are arrived at on the basis of dentists' receipts for 2008-09.

05. ask after 探望，问候

例如:She asked after your health. 她问候你。

06. ask for

[1]. If you ask for someone, you say that you would like to speak to them. (向人)请求见面；

例如：There's a man at the gate asking for you.

[2]. If you ask for something, you say that you would like it.央求。

例如：I decided to go to the next house and ask for food.

           Who asked for your opinion?

[3].If you say that someone is asking for trouble or is asking for it, you mean that they are behaving in a way that makes it very likely that they will get into trouble.

例如：To go ahead with the match after such clear advice had been asking for trouble.

07. avail (oneself) of 利用(机会等)

   例如:You must avail yourself of every opportunity to speak foreign languages.

        Guests should feel at liberty/ at home to avail themselves of your facilities.

08. back up

   [1].支持，援助；

   例如：Radio signals received from the galaxy's centre back up the black hole theory.

         It is time the Government backed up its advert campaigns with tougher measures.

   [2].倒退，后退；

例如：I backed up carefully until I felt the wall against my back.

   [3].使(交通等)停滞；(车子)倒车；

例如： He backed up a few feet and rolled the window down.

   [4].支撑(身体等)。

09. bear/keep in mind 记住

   例如:We have no vacations now, but we’ll certainly bear your application in mind.

010. break away (from) 脱离，逃跑

例如:He considered breaking away from the clan. 他考虑同那伙人分道扬镳。

    **break away (from) & get away from 都是vi.

     前者—Escape with a sudden violent effort.

     后者—Escape from the scene of a crime or from being caught.

011. break down

[1]. If a machine or a vehicle breaks down, it stops working. 垮掉，抛锚

例如: Their car broke down.

[2].If a discussion, relationship, or system breaks down, it fails because of a problem or disagreement.（关系、婚姻）破裂

例如: Talks with business leaders broke down last night.

        Paola's marriage broke down.

[3].To break down something such as an idea or statement means to separate it into smaller parts in order to make it easier to understand or deal with. 分解，分成（若干）部分

例如: The report breaks down the results region by region.

        These rules tell us how a sentence is broken down into phrases.

[4].When a substance breaks down or when something breaks it down, a biological or chemical process causes it to separate into the substances which make it up. （化学变化）分解，打碎

例如: Although rubbish are poured into oceans, the water can break down most of them.

[5].If someone breaks down, they lose control of themselves and start crying. （精神）崩溃、垮掉

例如: Because he was being so kind and concerned, I broke down and cried.

        The young woman broke down in tears.

[6].If you break down a door or barrier, you hit it so hard that it falls to the ground. 打破，粉碎

例如: Firemen were called after his father failed to break the door down.

[7].To break down barriers or prejudices that separate people or restrict their freedom means to change people's attitudes so that the barriers or prejudices no longer exist. 消除（障碍等）

例如: His early experience enabled him to break down barriers between Scottish Catholics and Protestants.

012. break in

    [1].强行进入，闯入；

    [2].(on) 打断，插嘴；

    [3].驯服(动物等)。

013. break into

    [1].闯入；

    [2].突然打断(话)。

014. break off

    [1].断绝，结束；

    [2].中断；

    [3].绝交，突然停止(工作等)，突然脱离。

015. break out

    [1].爆发，突然发生(战争、火灾、事故等)；

    [2].脱逃。

016. break through

    [1].突破(障碍等)；

    [2].(太阳)从云中出现。

017. break up

    [1].中止，结束；

    [2].打碎，拆散；

    [3].(身体)变虚弱，衰弱；

    [4].崩溃，损坏。

018. bring about 带来，造成 (=give rise to, lead to, result to )

019. bring down

    [1].打倒，挫伤；

    例如:The wind brought down a number of trees.

    [2].降低；

    例如:Good Harvest will bring down the price.

    [3].卸下(行李、货物)；

    [4].使蒙受(责罚等)〈on〉；

    [5].继续，持续(记录)〈to〉；

020. bring forth

    [1].产生；

    例如:Trees bring forth fruit.

    [2].提出。

    例如:bring forth a question.