看着那位老师越走越近，说实话，我们有点紧张。
“你们是五班的吧。”
“对的。”
“你们怎么都在这里，不进舞蹈房啊？”
“我们没有舞蹈鞋。”
“哦，那没事，先进去吧，等舞蹈鞋到了之后咱们再换舞蹈鞋。”
“这老师还怪温柔的啊。”
“学舞蹈的身段都这么好吗？好羡慕。”
“没事，你坚持学，以后你也这样。”
“哈哈哈哈。”
那些科学家们日复一日地在实验室努力工作day by day［强调变化］一天天地；逐日地：The weather is getting warmer and warmer day by day．天气一天天地暖和起来。day in and day out / day in, day out:Day in and day out I follow almost the same routine.日复一日，我每天都做着几乎同样的事情。人教7-5one day（过去或将来的）某一天：Given the right kind of training, these teenage soccer pyers may one day grow into iional stars．给予适当的训练，这些青少年足球运动员有朝一日可望成为国际巨星。some day（将来）总有一天；（日后）某一天：I hope I meet him some day. 我希望有一天能见到他the other day前几天；前不久：When I met him the other day, he had just e back from work, lookied．前几天我碰到他的时候，these days现在；如今：他正好下班回来，看上去很兴奋As you see, the umber ofcars on roads keeps rising these days．如你所见，如今路上的车辆越来越多to this day至今：I didn''1 find time to say good-bye to you before I left.I regret it to this day. 走之前来不及跟你告别，我至今后悔不已daybreak /deibrerk/=n|U］黎明；破晓（dawn)daylight/derrt/ n |U| 日光；日间；黎明：in/at daylight 在白天／黎明时daytime /dertaim/ n |U]［常与the连用］白天；白昼：in the daytime在白天dead/ded/ all·adj1死的；无生命的；（植物）枯萎的反alive:the dead死者She has been dead for one year．她去世已经一年了drop dead (= die suddenly）猝死；暴毙dead flrass/leaves 枯萎的花／枯草／枯叶2麻木的；冷淡的：My arm''s gone dead. 我的手臂麻木了in a dead voice 用冷淡的语气③无生气的；寂静的；死气沉沉的：in the dead hours of the night 在夜深人静时4不工作的；已废弃的；已使用过的：The battery is dead. 电池没电了。a dead volo死火山⑤［只用于名词前］完全的：(a) dead silence (= ie silence）死寂：完全安静adv［非正式用语］1完全地：dead right/wrong完全正确／错误2非常；十分：I''m dead tired. I ''t walk any farther．我累死了，再也走不动了。deadline/dedin/ n[C|最后期限；截止日期：The deadline for applications is this Friday. 申请截止到本周五。vi过时：His designs are so cssic; they ''ve hardly dated at all.date back (to) / date from追溯到；远在．.年代：It is believed that ese calligraphy dates back to at least the Han Dynasty据信，中国书法至少可以追溯到汉代。他的设计很经典，一点儿也不显得过时Most of the Great Wall dates from the Ming Dynasty 大部分长城始建于明朝。daughter/do:te(r)/ alln|C|女儿dawn/do:n/ll· n|C|&|U|黎明；拂晓（daybreak):from dawn till/ to dusk 从早到晚The traie that night and arrived in Mo dawn the m．火车深夜启程，第二天黎明时分到达了蒙特利尔。We arrived in Sydney as dawn broke. 天亮时，我们抵达了悉尼。2［用单数］开端；起始；萌芽：The book is about the dawn of civilization．这本书讲述文明的起源vi破晓；被理解：The day dawned calmly．黎明悄然而至。It dawned ohat Jo had been right all along.我开始明白了乔一直都是对的。day/der/ milln0|C|（一）天；（一）日：in a day or two一两天内the day before yesterday 前天the day after tomorrow 后天Tomorrow is another day. 明天又是崭新的一天。2|U]&[C］白昼；白天 反night:as bright as day 亮如白昼before day 在天亮以前Sailors signal with fgs by day and with lights by night 水手们白天用信号旗发信号，夜晚则用信号灯。Some animals sleep in the day and go out at night.有些动物昼伏夜出③|C|［常用单数］工作日：a seven-hour w day 七小时工作日She took a day off yesterday．昨天她请了一天假。+|C|［常用复数］时期；时代：in the days of Queen Elizabeth！在伊丽莎白女王一世时期My mother often talks about the good old days. 我母亲经常谈起昔日的美好时光。⑤[C］节日；（特定的）日子：National Day 国庆节all day (long）一整天：He seems to be on the move all day long. 他似乎一天到晚忙个不停。(all) day and (all) night整日整夜地；日日夜夜地：All day and all night it snowed, and the city began to suffer from a general traffic jam. 大雪不分昼夜地下，全城开始陷入交通大拥堵day after day［强调重复］日复一日地；天天：The stists worked hard in the boratory day afterThe sunlight was falling on the fields. 阳光照在田野上。她长发披肩，温柔又美丽2）降临；到来；（日期）适逢：We arrived just as night was beginning to fall. Aitn 赶在夜幕降临时到达了，A silence fell as we looked ut each other. A4n22 tn 打量着对方，一阵沉默The Mid-Autumival falis oh of the eighth month of ese lunar dar. 44* 4 ik 在中国农历八月十五那天3［表示进入某种状态］［用作系动词］变成；成为；陷入某种状态：all ill /asleep 生病／睡着His words let me fall into deep thought. 他的话使我陷入沉思。To be successful, the first thing to do is to fall in love with your work．成功的第一要素就是热爱你的工作。2属于（某类、群体等）:These books fall into the css ofsce research.这些书属于科研类。fall apart破裂；散架；瓦解：Don''t overfill the dumplings, or they will fall apart when you boil them．不要把饺子包得太满，否则煮的时候会破裂。I think this old chair is falling apart. 我觉得这把旧椅子要散架了The deal fell apart when we failed to agree on a price.我们在价格上未能达成一致，生意没做成。fall away（逐渐）减少；消失fall ba 求助于；借助于：when I ''t model any more. 我不想当自己不能再I don''t want to have nothing else to fall ba 做模特时没有其他东西可依靠fall behind落在（……）后面；跟不上：When some students fell behind, others would e and offer help. 当有些同学落后时，其他的同学就会主动来帮忙He said he fell behind with his work. 他说他工作落后了fall down 跌倒；倒塌；不尽如人意：James helped an old woman who fell down while crossing the street. 詹姆斯帮助了一位过马路时摔倒的老太太。More buildings fell down in the earthquake. 更多的建筑物在地震中倒塌That''s where the theory falls down．这就是该理论的不足之处。fall for［非正式用语］爱上；上……的当：Afriend ofmio Yinnan and fell for a Dai woman.我有个朋友去云南时爱上了一位傣族女子We must not fall for this kind of trick! 我们绝不能轻信这种小把戏而上当啊！fall off（从……）掉下；跌落：When you are learning to ride a bicycle, you often fall off．学骑自行车时，经常会摔下来。There''s a fair ce that we might win this time.这次我们获胜的可能性很大。／这次我们很有可能获胜。（肤色）白皙的；（头发）浅色的dark:She is a tall girl with fair hair．她身材高挑，有一头浅发晴朗的（fi will be fair tomorrow：明天会是个好天。fair/fea(r)/,|n|C］露天游乐场：集市；展销会；义卖会：a book/trade fair 书展／商品交易会ajob/careers fair 招聘会@/feell/ adv公平地；相当（quite):treat sb fairly公正地对待某人They were getting along fairly. well with each other.他们相处得很不错。一辨析见rather*fairy /feen/n|C] 小仙子；小精灵：afairy tale 童话；神话faith /fei0/ arl R''n[U］信任；信心：T''m delighted to lnow you have such faith in me. oit 你如此信任我，我很高兴。Faith move mountains．精诚所至，金石为开He had great faith ialent of the up-and-ing geion．他对后起之秀的才能充满信心。2|U］宗教信仰：[C］宗教：people ofdifferent faiths 信仰不同宗教的人士faithful /fer0f/ adj 忠诚的；忠实的faithfully /fei0feli/ adv 忠诚地；忠实地*fake /ferk/.adj假的；伪造的：a fake 20 bill一张20美元的假钞.n|C|假货；赝品fall/fo:/at·(fell, fallen) vi［表示从高处到低处落下］1 落下（drop)；降落；跌倒；坍塌：The book fell from his hand．书从他手中掉了下来。He fell on the id hroke his leg．他摔倒在冰面上，一条腿骨折了。The wall was about to fall. 那堵墙快要塌了。2（数值等）下降（go down);（风势、声音等）减弱＆ rise:In that area, the number of big trees has fallen by more than 55 pert. 在那一地区，大树的数量下降的幅度超过 55%When she saw the sleg baby, her voice fell. 5 t看到熟睡的婴儿，她的声音变小了3 沦陷；倒台：The city finally fell to the enemy．这座城市最终落入了敌人之手The gover fell after only 6 months in office. 这届政府执政仅6个月便下台了。的；高峰的：peak hours（交通、用电等的）高峰时间a peak season 旺季Wind speeds peaked at 105 miles per hour yesterdav -昨天的风速最高达每小时105英里：pear /pee(r)/,n[C］梨：梨树*pearl /p3:/|n|C| 珍珠*peasa/an [C]（旧时的或贫穷国家的）农民*pebble /pebl/l n[C］卵石；小圆石；砾石*peculiarity /pikju:li''aerati/ n [CI 个性；特点；怪异的性质*pedal /ped/l.n|C|踏板；脚蹬.vi&vt骑（自行车）；踩……的踏板opedestrian /pa''destrian/n[C］行人；步行者*peer /pta(r)/:l.vi（尤指因难以看清楚而）仔细看；端详：He peered closely at the photograph. 他聚精会神地端详着相片。=n［常用复数］身份／地位相同的人；同龄人pen /pen/ill|n|C］钢笔"penalty /pei/, n|C］处罚；罚款；发球Opence /pens/il n [ penny 的复数］便士pencil /pensl/al n|C］铅笔*penguin /pengwin/alln|C|企鹅*penicillin /.peni''sthn/,n[U］青霉素；盘尼西林epenny /peni/,ll rn |C] (p/ pennies / pence) {±penniless /penis/ adj 身无分文的pension/penfr/in |C|养老金；退休金*pensive /pensiv/, adj 沉思的；郁郁不乐的people /pi:pl/ll n1［复数概念，谓语动词用复数形式］人；人们：At least ten people were killed in the car crash.有10人在撞车事故中丧生。②［与the连用，谓语动词用复数形式］人名：serve the people heart and soul 全心全意为人民服务He lived for the people and died for the people. fe 为人民而生，为人民而死。3|C|(pl peoples) 民族；种族：the peoples of Europe 欧洲各民族A people without the knowledge of their past history, in and culture is like a tree without roots．一个民族不了解自己过去的历史、起源和文化，就像一棵没有根的树。-﹣马库斯．贾维pepper /pepe(r)/,n |C］胡椒；甜椒；灯笼椒；[U］胡椒粉：Si pepper 花椒pepper /pepako:n/,n[C|胡椒粒per /pe(r); p3:(r)/all prep 每；每一：70 miles per hour每小时70英里Operceive /pe''si:v/,lvt［正式用语］察觉；发觉：During the css it is easy for teachers to perceive when students are ied, bored, or distracted ih,老师很容易察觉到学生们何时（对讲课）感兴趣，何时感到无聊或精力不集中。