1.动词+about+sth.。about在此表示“论及，谈起，涉及，着手”等意思： arrange about安排，argue about辩论, ask about询问，bring about带来， chat about闲聊，care about在意，complain about报怨，go about着手， hear about听说, inquire about打听,know about了解， quarrel about争论， read about读到, see about负责处理，set about开始, speak about谈起, talk about谈论, think about考虑, trouble about担心，tell about讲述， worry about着急。现举例说明其中一些短语的用法： She inquired about my brother. 她向我打听有关我兄弟的情况。 I must set about my packing. 我必须开始收拾行装。 What are you chatting about? 你们在聊什么呢？ 2. be +形容词+about+sth.。about在此意思是“为…，对…”，接表原因的词： be anxious about为…着急, be bad about对…感到不舒服，be busy about忙于…, be careful about小心…, be certain about对…有把握, be concerned about关心…, be crazy about为…发狂，be excited about为…感到激动, be happy about为…而高兴, be mad about为…发疯，be nervous about对…感到紧张, be particular about挑剔…, be pleased about为…兴奋，be strict about对…严格，be thoughtful about对…考虑周到的， be uneasy about为…感受到不安。请看例句： What have you been busy about today? 今天在忙些什么？ You are certainly very thoughtful about others. 你为别人想得太周到了。 I’m strict about such things. 对这些事我是很严格的。 注：come about发生，get about（疾病、谣言）流行，turn about转身， leave about到处乱放，lie about随便堆放，put about打扰;传播， put oneself about使…发愁。这些词组中about作副词，此时about不能接宾语。
二、AFTER
1.动词+ after。介词after有“追赶，问候，效仿”之意：ask after问候, be after寻求, do(sth.)after学着做，go after设法得到, inquire after问候, look after寻找, run after追求, seek after追逐, take after长得像。例如： Every afternoon he called to ask after his girl friend. 他每天下午都打电话问候他的女朋友。 The boy takes after his father. 这男孩长得像他父亲。 The dogs went after the wounded deer. 一群狗在追赶那只受伤的鹿。 2.after构成的其它短语。after在不同的短语中意思各异： after a little/moment/while过了一会，after all毕竟,after dark天黑以后， after one’s heart合…的心, after school放学后， after service售后服务， after the fashion勉强， day after day日复一日， one after another一个接一个，year after year年复一年。例如： Don’t be too strict with him. After all he is still a child. 不要太苛刻了，毕竟他还是个孩子。 He can speak and write English after a fashion. 他多少会说和写一点英语，但不太好。
三、AT
1.动词+ at。at表示“指向某一目标，到达某地”：arrive at抵达, call at访问某地, catch at(it)当场抓住, come at攻击, fire at向…开火, glance at瞟一眼, glare at怒目而视, grieve at忧伤，knock at敲, laugh at嘲笑, look at看一眼, pull at拉扯, rejoice at对…高兴， smile at向某人微笑, shoot at朝…射击, stare at怒目而视, thrust at刺向, tear at撕, tremble at颤抖，wonder at吃惊，work at工作。例如： Don’t let me catch you again at it.不要再让我当场逮住你。 We must “shoot the arrow at the target”. 我们必须有的放矢。 They trembled at the sight of the peasant’s spears. 看到农民的梭标，他们阵阵发抖。 2. be +形容词/过去分词+ at。其中at表示“情绪、情感的原因， 或对某物具有某种感情”：be angry at恼怒于, be alarmed at对…保持警觉, be astonished at对…吃惊, be bad at不擅长, be clever at对某事很灵巧, be delighted at高兴，be disgusted at厌恶, be disappointed at对…失望， be good at擅长, be impatient at对…不够耐心, be mad at狂热于, be pleased at对…感到高兴, be present at出席, be satisfied at满意, be surprised at吃惊, be shocked at对…非常震惊，be terrified at受到…的恐吓, be quick at对…很机敏。例如： They were overjoyed at his return to work. 他们对他重返工作感到欣喜。 They are alarmed at the growth of the liberation movement in the colonies. 他们对殖民地日益壮大的解放运动警觉起来。 3.at+名词构成的词组：at a distance在一定距离，at a loss不知所措， at a time一次，at all一点也不，at any cost不惜一切代价，at best最好也只是， at first起初，at hand手头，at heart在内心里，at home在家； 无拘束，at last最后，at least至少，at most最多，at once马上，at present目前， at sea不知所措，at times有时，at will任意地，at work起作用，at worst最坏。 4.其它含有at的短语：work hard at勤奋工作，drop in at顺路拜访。
