S
sad[sAd] adj.悲伤的；使人悲伤的：We were sad about [at, over, with] her death. 我们为她的死感到悲伤。/ He was sad to hear the news. 他听到这个消息很伤心。
safe[seIf] adj.安全的，平安的：They were safe from attack. 他们很安全，未受到攻击。/ We’re safe in accepting the offer. 我们接受这个提议不会有错。
safety[5seIftI] n. [U]安全，保险：They ran to safety, away from the fire. 他们跑到安全的地方，远离了大火。/ We are now in safety. 现在我们安全了。
sail[seIl] n.(常用单)航行 [C]帆，帆状物v.开航，驾(船)，航行(于)：The ship sails for Shanghai tomorrow. 这船明天开往上海。
sailor[5seIlE] n.[C]海员，水手，水兵：a bad (good) sailor 晕船(不晕船)的人
sale[seIl] n.[U,C]卖，出售；销量，销售额；减价出售，拍卖：He got $1000 from [for] the sale of his house. 他卖房子得了1000美元。
【短语】for sale 待售，出售的 / on sale (有货)售卖，上市；减价时
salt[sR:lt] n.[U]盐vt.加盐于，用盐腌：Please pass me the salt. 请把盐递给我。
same[seIm] adj.同一的，同样的 pron.同样的事：Do whatever you want, it’s all the same to me. 你想干就干啥，我无所谓。/ He likes to read in bed, and it is the same with me. 他喜欢在躺床上看书，我也一样。
【用法】1.其前通常要加定冠词。2.表示“与…一样”，要用 the same as，不能用 as same as或the same with [like]。3.It’s the same with…意为“…也一样”，与“so+助动词+主语”意思相似。4.The same to you 为口语常用语，意为“你也一样”，主要用于回答祝愿。
sand[sAnd] n. [U]沙，沙子 (复数)沙地，沙滩：The children were playing on the sand(s). 孩子们在沙滩上玩。
sandwich[5sAnwIdV] n.[C]三明治，夹心面包：He made some cheese sandwiches. 他做了一些干酪三明治。
satisfaction[7sAtIs5fAkF?n] n.[U]满意 [C]乐事，趣事：I find great satisfaction in his improvement. 我对于他的进步极为满意。
satisfy[5sAtIsfaI] v.满足，使满意，使相信：Are you satisfied with the service? 你对这服务满意吗?
Saturday[5sAtEdI] n.星期六：She doesn’t work on Saturdays. 她星期六不工作。
save[seIv] v.救，挽救；节省，存钱；免去，省去；保全，保留：He saved the boy from drowning. 他救起了这个男孩，使他免于溺死。/ Save me some milk.=Save some milk for me. 给我留点牛奶吧。
【用法】用于save sb (from) doing sth 表示“免去某人做某事”：/ If you do it tonight, it will save you from having to get up early. 你如果今晚做这事，明天早上你就不必早起了。
say[seI] v.(said, said)说，讲；(被动)据说：It’s said that he knows your father. 据说他认识你父亲。
【用法】What do [would] you say to…? 意为“你说…怎么样呢?”，其中的to 为介词：What do you say to playing tennis? 打打网球怎么样?
scene[si:n] n. [C,U] (戏剧、电影等的)一场，场景；布景；风景，景色；(事件或事故的)发生地点：The sunrise was a beautiful scene. 日出是一幅美景。/ The criminal fled the scene. 罪犯逃离了现场。
school[sku:l]n.[C]学校，学院 [U]上学，上课：There will be no school tomorrow. 明日学校放假。/ Did you take history at school? 你在学校上过历史课吗?
science[5saIEns] n.[U,C](一门)科学，学科；(统称)科学，科学研究；(统称)自然科学，理科：computer science 计算机科学 / The chief sciences are chemistry, physics and biology. 主要的自然科学是化学、物理和生物。
scientific[saIEn5tIfIk]adj. 科学的，合乎科学的：a scientific method 科学方法 / He has a scientific mind. 他有科学头脑。
scientist[5saIEntIst] n.[C]科学家：Scientists have discovered a new virus. 科学家发现了一种新病毒。
scold[skEJld]v.责骂，申斥，斥责：His mother scolded him for getting his clothes dirty. 他妈妈因他弄脏了衣服而责骂他。
score[skR:] n.[C]二十；得分 vi.记分, 刻痕, 得分：What is the score now? 现在比分是多少? / Jack got a low score on the test. 杰克测验得分不高。
【用法】表示“二十”时，其复数形式通常不加词尾-s，且其后一般不接介词of，如three score eggs 60只鸡蛋。当其后的名词前有the, these, those 等表示特指的限定词修饰时，或当其后接的是us, them, you 等人称代词时，则score 后必须要有介词of：three score of these eggs 这些鸡蛋中的60只。另外，scores of(许多)是习语，其中的score用复数。
scream[skri:m] v.尖声叫, 尖声喊叫n.[C]尖叫声, 喊叫声：She screamed out that there was a thief under the bed. 她尖叫道床下有小偷。
sea[si:] n.[U]海，海洋 [C]许多，大量：I don’t like to travel by sea. 我不喜欢乘船旅行。
【用法】构成专有名词时，其前通常要用定冠词：the Red Sea 红海
search[sE:tF]v.& n.[C,U]搜索，搜寻：The police searched the city. 警察搜遍了全城。/ The police searched for the thief. 警察搜找那个小偷。
【短语】in search of 搜找 / in one’s (the) search for 搜找
season [5si:zn] n.[C]季，季节：Spring is a lovely season. 春天是怡人的季节。
【短语】in season 当令，及时，正是时候 / out of season 不当令，在淡季
seat[si:t]n.[C]座，座位vt.使坐下：Which are our seats? 哪些是我们的座位? / He seated himself at the writing table. 他在写字台前坐下。
second[5sekEnd]n.[C]秒；片刻；第二者；第二人adj. 另一个；又一个num. 第二：We’ll have to do it a second time. 我们得再做一次。
secret[5si:krIt] n. [C]秘密， 秘诀adj.秘密的，隐秘的：We have no secrets from you. 我们对你毫无隐瞒。
【短语】in secret 秘密地，偷偷地 / in the secret 知道秘密
secretary[5sekrEtrI]n.[C]秘书；书记：He was secretary of this Party branch. 他是这个党支部的书记。/ She’s private secretary to the Minister. 她是部长的私人秘书。
see[si:]v. (saw, seen)看，看见；了解，领会：I saw her crying under the tree. 我看见她在树下哭。/ I’ve never seen the word used that way before. 我从来没有看见这个词这样用过。/ I see little of Mr Smith. 我很少见到史密斯先生。
【短语】see about (doing) sth 负责处理(安排)某事 / see off 为…送行 / see sb out 送某人出门(到门口) / see through 看穿，识破；帮助渡过(困难等)；进行到底
seed[si:d]n.[C]种子，萌芽v.结实，播种：Plants develop from seeds. 植物由种子发育而成。
seek[si:k]v.(sought, sought)寻找，探索：He has sought to explain it. 他一直想对此作出解释。/ He sought out his friend in the crowd. 他在人群中找到他的朋友。
seem[si:m]vi.像是，似乎：It seems as if he is happy. 他好像很高兴。/ It seems that he has caught a cold. 他似乎感冒了。/ It seems like a good idea. 那似乎是个好主意。/ He seems to know everything. 他似乎什么都懂。
seize [si:z]v.抓住, 逮住, 夺取：He was seized with a slight fever. 他突然有点发烧。/ She seized the gun from him. 她从他手里夺过了枪。
seldom [5seldEm]adv.很少，不常：The children are seldom ill. 这些孩子很少生病。
【用法】在正式文体中可放在句首，其后用倒装语序：Seldom does he read in his free hours. 他空余时间很少看书。
sell[sel](sold, sold) v.出售，卖：He sold me his camera.=He sold his camera to me. 他把照相机卖给了我。/ He sold his car at a low price. 他低价卖掉了他的汽车。
【短语】sell out 卖完
send[send]vt.(sent, sent)送，寄，派遣：Please send him my best wishes.=Please send my best wishes to him. 请代我向他问好。/ He sent his son to post the letter. 他叫他儿子去寄信。/ The sound of the gun sent the birds flying away. 枪声把鸟吓飞了。
【短语】send up发射 / send out 发出(光亮等)；生出(长出)某物
【比较】1.send sb to do sth与send for sb to do sth：前者表示派某人做某事，后者表示派人请某人做某事。2. send sb to do sth 与send sb (sth) doing sth：前者表示派(叫)某人去做某事，后者表示使某人或某物很快地或失去控制地做某事。
sense[sens]n.[C]官能，感觉，意识 vt.感到，理解，认识：Can you make sense of this poem? 你能看懂这首诗吗? / I sensed that I had made a serious mistake. 我意识到自己犯了个严重的错误。
【短语】in a sense 在某个意义上 / make sense 有意义，讲得通，有道理
sentence[ 5sentEns]n.[C]句子，判决vt.审判，判决：A sentence usually contains a subject and a verb. 句子通常包括主语和动词。/ The sentence was twenty years in prison. 判决是20年徒刑。
separate[5sepEreIt]v.分开adj.[5sepErEt]分开的，分离的，个别的，单独的：Separate the longer ones from the shorter ones. 把长的与短的分开。/ Our children have separate bedrooms. 我们的孩子有各自的卧室。
September[sEp5tembE]n.九月：School begins in September. 九月开学。
serious[5sIErIEs] adj.严重的，严肃的，认真的：He was serious about (doing) his work. 他对待(做)工作很认真。/ I’m serious. 我是认真的。
servant[5sE:vEnt] n.[C]仆人，用人；公仆，公务员：A politician should be a servant of the people. 政治家应该是人民的公仆。
serve[sE:v] v.服务，服役：Let those who can serve as teachers. 能者为师。/ We must serve the people heart and soul. 我们必须全心全意地为人民服务。/ She served us (with) fruit and tea.=She served fruit and tea to us. 她用水果和茶招待我们。
service [5sE:vIs]n. [C,U]服务，服役：My car is at your service. 我的汽车随你使用。/ Will you do me a service? 帮我个忙好吗?
set [set]v. (set, set)(太阳等)下落；放置；摆设；规定；确定；使(做事) n.[C]一套，装置：When we arrived there, the sun had set. 我们到达那儿时，太阳已落山了。/ What he said set us thinking. 他的话使我们思考起来。
【短语】set about 开始或着手做某事(后接名词或动名词) / set out 动身；开始；想要(后接不定式)；安排，摆设；陈述，解释
【比较】set sb to do sth与set sb (sth) doing sth：前者表示使某人做某事，后者表示使某人(物)开始做某事或处于做某事的状态。
settle[5setl] v.安放；使定居；安排；解决；决定：The affair wasn’t so easily settled. 这事不是那么容易解决的。/ He settled to sell his car. 他决定把汽车卖掉。
【短语】settle down (使)安静下来；(使)舒服地坐下；安居下来；习惯于某种生活；安下心来 / settle for 勉强接受 / settle in 定居于；(使)习惯于 / settle up 结账，付清
seven[5sevEn]num.七，七个：at sixes and sevens 乱七八糟
several[5sevErEl] adj.几个 pron.几个：I’ve read it several times. 我已经读过好几遍了。
【用法】通常不与 only 连用，遇此情况可改用 a few：I have only a few friends. 我只有几个朋友。
sew[sEJ]v.(sewed, sewn / sewed)缝制，缝纫：I like sewing. 我喜欢缝纫。
sex[seks] n.[C,U]性；性别：This is a school for both sexes. 这是一所男女兼收的学校。/ There is a lot of sex in the book. 这本书有很多性描写。
shade[FeId] n.[U]阴凉，树阴 [C]遮光物，帘 v.遮住(光线)：They sat in the shade. 他们坐在阴凉处。/ I shaded my eyes with my hand. 我用手遮在眼睛上挡住光线。
shadow[5FAdEJ] n.[C]影子，阴影：The shadows of the trees grew longer as the afternoon went on. 随着下午时光的延续，树影会越来越长。
shake[FeIk]v.(shook, shaken)摇动，摇，颤抖，震动：He stood up and shook hands with me. 他站起身来同我握了手。/ He didn’t reply, but just shook his head. 他没有回答，只是摇头。
shall[FAl] v.aux.将要，会；(用于疑问句中征求意见)要不要，…好吗；(用于陈述句中表示允诺、告诫、威胁、命令、规定、必然性)：Shall we all go to the film tonight? 我们今晚都去看电影吗?/ You shall have an answer by tomorrow. 到明天你可以得到答复。
【用法】其主语通常为第一人称；若表示说话者的意图、警告、命令、决心等，此时主语的行动受讲话者支配，那么则用于第二、三人称；用于问句中，征询对方对于主语行动的意见，主语可以是第一人称，也可以是第三人称；在条约、规定、法令等文件中表示义务或规定，也用于第三人称。
shame[FeIm] n.[U]羞愧，惭愧 [C]惋惜的事，可耻的事 vt.给…带来羞辱，使难为情：It’s a great shame to treat him like that. 这样对待他太不像话了。/ To my shame, I never thanked him for his kindness. 令我感到惭愧的是我对他的好意从未表示过感谢。
【用法】汉语说“感到羞愧”，说成英语可以用 feel shame：He felt shame at having told a lie. 他因说了谎而感到羞愧。但不能用 feel shameful(因为 shameful的意思是“可耻的，丢脸的”)。
shape[FeIp]n.[C,U]形状；体形；形式v.使成形，塑造：Childhood experiences often play a big part in shaping one’s character. 童年经历在形成一个人的性格方面往往起重要作用。
share[FZE] n.[C]共享，一份，份额，参股v.分享，共有：Let’s share the cake (with her). 我们(与她)一起分吃这块蛋糕吧。
【比较】share sth与share in sth：前者可用于具体的事物，也可用于抽象的事物；后者主要用于抽象的事物。
sharp[FB:p]adj.锋利的adv.整；锐利地；急速地：I need a sharp knife. 我需要一把锋利的小刀。/ The lecture started at three o’clock sharp. 讲座于3点整开始。
shave[FeIv] v.修(面)，刮(脸) n.[C]理发，刮胡须，修面：My father shaves every day. 我父亲每天都刮脸。
she[Fi:] pron.她：I love her and she loves me. 我爱她，她也爱我。
sheep[Fi:p](pl.sheep) n.[C]羊，绵羊：a black sheep 败类，害群之马 / Sheep feed on grass. 羊吃的是草。
sheet[Fi:t]n.[C](一)片，(一)张，薄片；被单，被褥：She wrote her name and address on a sheet of paper. 她把名字和地址写在一张纸上。
shelf[Felf]n.[C]架子，搁板：Put it on the luggage shelf. 把它放在行李架上。
shine[FaIn]v. (shone, shone)照耀，发光：Make hay while the sun shines. (谚)趁太阳好垛干草。
ship[FIp] n.[C]船，海船，舰v.装上船：They crossed the Pacific by ship. 他们乘船横渡太平洋。
shirt[FE:t]n.[C]衬衫，衬衣：How much is that shirt? 那件衬衫多少钱?
shock[FRk] vt.使震惊，使受电击 n.[C,U]震动；震惊；撞击；电击：He was shocked to hear her talking like that. 听到她这样讲话他感到震惊。
shoe[Fu:]n.[C]鞋，鞋子：Your shoe laces are undone. 你的鞋带散了。
shoot[Fu:t]n.[C]射击，发射v. (shot, shot)射击，投射：He was shot three times in the leg. 他的腿中了三枪。
【比较】shoot sb (sth)与shoot at sb (sth)：前者指打中某人(某物)，后者指向某人(某物)射击(但不一定打中)。
shop[FRp]n.[C]商店，店铺vi.买东西，购货：We usually shop on Sundays. 我们常在星期天去商店买东西。/ I’ve got some shopping to do. 我要买些东西。
shore[FR:] n.[C]岸，滨：We went to the shore for the summer. 我们去海滨度假。
short[FR:t] adj.短的，矮的；缺乏的：Don’s cut it too short. 不要把它剪得太短。
【短语】(be) short of 缺少 / for short 为了简短，简称 / in short 总之
shot[FRt] n.[C]射击，开枪，开炮，射击声；射门；投篮；击球：The policeman fired a warning shot. 警察鸣枪示警。/ His shot went wide. 他没射进球门。
should[FJd] v.aux. (shall的过去式)将，会；应当，应该；可能；(表建议、命令、决定、必要等)应该，必须：You shouldn’t leave so soon. 你不应当这么早就走。/ They should be given a chance to try. 应当给他们尝试的机会。
【用法】1.后接动词原形，表示应该要做某事；后接动词完成式，表示本来应该发生某事(但实际未发生)或可能已经发生了某事：He should leave. 他应该离开。/ He should have left. 他可能已经离开了。/ He shouldn’t have left so soon. 他本不该那么快就离开的。2.should表示推断时，语气较肯定，通常是指非常可能的事(因为暗示有一定的事实依据或合乎常理)，而与之相比 may, might, could等表示推测时，则语气较不肯定，尤其是might, could。
shoulder[5FEJldE] n. [C]肩膀：She looked over her shoulder. 她回过头来看。
【短语】shoulder to shoulder 肩并肩
shout[FaJt] v.& n.[C]喊，高声呼喊：Don’t shout at me. 别冲着我喊。/ He was too far away and I had to shout to him. 他离得太远，我只好大声喊他。
show[FEJ] v.(showed, shown)给…看，出示，显示；表明，显示 n. [C]展览会：Please show me your photo.=Please show your photo to me. 请给我看看你的照片。/ He showed me how to do it. 他教我如何做此事。
【短语】on show 展出 / show off 炫耀 / show sb (a)round 陪某人参观，带某人到处看看
shower[5FaJE] n.[C]阵雨，淋浴：He was caught in a shower. 他被淋雨了。
shut[FQt] v.(shut, shut) 关闭，关门，禁闭：Shut up! 闭嘴！/ Please will you shut the door? 请你关上门好吗?
【短语】shut off 关掉，切断(电源等)；停止供应(煤气，水等) / shut up 闭嘴，住口
shy[FaI] adj.害羞的，羞怯的：Don’t be shy. 别害羞。/ He was not shy of [about] offering suggestions. 他并不怯于提建议。
sick[sIk]adj.生病的；恶心的；厌烦的：She is sick with a cold. 她患感冒。/ I’m really sick of housework. 我的确厌烦做家务事。
【辨析】ill与sick：两者均可表示“生病的”，前者主要作表语，后者则可用作表语或定语。另外，the sick 可用作名词，表示“病人们”，但ill不这样用。
side[saId] n.[C]边，旁边；面，侧面：There are trees on both sides of the road. 路的两边都种有树。/ He painted all four sides of the box. 他把箱子的四面都漆了。
【短语】on the side of 在…一边 / side by side 肩并肩 / take sides 支持(偏袒)某一方
sigh[saI] v.& n.叹气，叹息：We heard him sigh. 我们听到他叹气。
sight[saIt] n.[U]视力；看见；视野 [C]情景，风景：He had good sight.=His sight was good. 他的视力好。
【短语】at first sight 第一次见到 / at sight 一看见 / catch sight of 看见，望到 / in sight 在视线范围内，可以看见 / lose sight of 看不见；忽略 / out of sight 在视线范围之外，看不见
sign[saIn] n.[C]符号，标记；身体的示意动作，手势；标志牌，指示牌；迹象，征兆 v.签名；打手势：A cloudy sky is not always a sign of rain. 阴天不一定是下雨的预兆。/ The policeman signed (to / for) me to stop. 警察示意我停下。/ Has he signed (to, on) the cheque? 他在支票上签名了吗?
silence[5saIlEns] n.[U]安静，沉默：Silence means [gives] consent. 沉默意味着同意。/ They walked on in silence. 他们默默向前走去。
silent[5saIlEnt] adj.无声的，无对话的，沉默的：You’d better keep silent. 你最好什么也别说。/ History is silent about [upon] this person. 历史对这个人没有记载。
silk[sIlk] n.[U]丝绸：The dress was (made of) silk. 这连衣裙是丝(做)的。
silly[5sIlI] adj.傻的：You are silly to do so.=It’s silly of you to do so. 你这样做真蠢。/ Don’t be silly, that insect can’t hurt you. 别傻了，那虫子不会伤你的。
silver[5sIlvE] n. [U]银，银币，银餐具adj.银制的，银的；银(白)色的：a silver ring 银戒指 / silver hair 银发 / It’s made
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