six
100以内的英文数字
100以内的英文数字一、10个数字0 zero 1 one 2 two 3 three4 four5 five6 six7 seven8 eight 9 nine二、整十数字10 ten 20 twenty 30 thirty 40 forty50 fifty 60 sixty 70 seventy 80 eighty 90 ninety 100 one hundred三、几十数字⑴十几数字11 eleven 12 twelve 13 thirteen14 fourteen 15 fifteen 16 sixteen17 seventeen 18 eighteen 19 nineteen⑵二十几数字21 twenty-one 22 twenty-two 23 twenty-three24 twenty-four 25 twenty-five 26 twenty-six27 twenty-seven 28 twenty-eight 29 twenty-nine⑶三十几数字31 thirty-one 32 thirty-two 33thirty-three 34 thirty-four 35thirty-five 36 thirty-six37 thirty-seven 38 thirty-eight 39 thirty-nine⑷四十几数字41 forty-one 42 forty-two 43forty-three 44 forty-four 45 forty-five46 forty-six47 forty-seven 48 forty-eight 49 forty-nine⑸五十几数字51 fifty-one 52 fifty-two 53fifty-three 54 fifty-four 55 fifty-five56 fifty-six57 fifty-seven 58 fifty-eight 59 fifty-nine⑹六十几数字61 sixty-one 62 sixty-two 63sixty-three 64 sixty-four 65 sixty-five66 sixty-six67 sixty-seven 68 sixty-eight 69 sixty-nine⑺七十几数字71 seventy-one 72 seventy-two 73 seventy-three74 seventy-four 75 seventy-five 76 seventy-six 77 seventy-seven 78seventy-eight 79 seventy-nine⑻八十几数字81 eighty-one 82 eighty-two 83eighty-three 84 eighty-four 85eighty-five 86 eighty-six 87eighty-seven 88 eighty-eight 89 eighty-nine⑼九十几数字91 ninety-one 92 ninety-two 93 ninety-three94 ninety-four 95 ninety-five 96 ninety-six97 ninety-seven 98 ninety-eight 99 ninety-nine四、几百几千几万数字一百多的数字前面写个“one hundred and”两百多的数字前面写个“two hundred and”千 thousand万 myriad百万 million例:100 one hundred1,000 one thousand10000 one myriad1,000,000 one million100 one hundred101 one hundred and one156 one hundred and fifty-six192 one hundred and ninty-two200 two hundred300 three hundred400 four hundred500 five hundred600 six hundred700 seven hundred800 eight hundred900 nine hundred1,000 one thousand1,001 one thousand and one1,300 thirteen hundred;one thousand and three hundred2,000 two thousand2,034 two thousand and thirty-four6,502 six thousand five hundred and two38,000 thirty-eight thousand45,672 forty-five thousand six hundred and seventy-two500,000 five hundred thousand1,000,000 one million3,123,400 three million,one hundred and twenty-three thousand and four hundred8,000,000 eight million47,000,000 forty-seven million900,000,000 nine hundred million1,000,000,000 a milliard,one milliard(美作:a billion,one billion)1,050,000,000 one billion and fifty million 10,000,000,000 ten billion200,000,000,000 two hundred billion1,000,000,000,000 a billion,one billion(美作:a trillion,one trillion)6,000,000,000,000 six million million。
1-100英文基数词
1—100英文1 - one2 - two3 - three4 - four5 - five6 - six7 - seven8 - eight9 - nine^10 - ten11 - eleven12 - twelve13 thirteen14 - fourteen15 - fifteen16 - sixteen17 - seventeen18 - eighteen>19 - nineteen20 - twenty21 - twenty-one22 - twenty-two23 - twenty-three24 - twenty-four25 - twenty-five26 - twenty-six27 - twenty-seven sixty |28 - twenty-eight29 - twenty-nine30 - thirty31 - thirty-one32 - thirty-two33 - thirty-three34 - thirty-four35 - thirty-five36 - thirty-six(37 - thirty-seven38 - thirty-eight39 - thirty-nine40 - forty 41 - fourty-one42 - fourty-two43 - fourty-three44 - fourty-four45 - fourty-five—46 - fourty-six47 - fourty-seven48 - fourty-eight49 - fourty-nine50 - fifty51 - fifty-one52 - fifty-two53 - fifty-three54 - fifty-four!55 - fifty-five56 - fifity-six57 - fifity-seven58 - fifty-eight59 - fifity-nine60 - sixty61 - sixty-one62 - sixty-two63 - sixty-three)64 - sixty-four65 - sixty-five66 - sixty-six67 - sixty-seven68 - sixty-eight69 - sixty-nine70 - seventy71 - seventy-one72 - seventy-two·73 - seventy-three74 - seventy-four75 - seventy-five76 - seventy-six77 - seventy-seven78 - seventy-eight79 - seventy-nine80 - eighty81 - eighty-one、82 - eighty-two83 - eighty-three84 - eighty-four85 - eighty-five86 - eighty-six87 - eighty-seven88 - eighty-eight89 - eighty-nine90 - ninety【91 - ninety-one92 - ninety-two93 - ninety-three94 - ninety-four95 - ninety-five96 - ninety-six97 - ninety-seven98 - ninety-eight99 - ninety-nine100 - a/one hundred&1-100英语序数词第1 first第2 second第3 third第4 fourth第5 fifth第6 sixth第7 seventh第8 eighth!第9 ninth第10 tenth第11 eleventh第12 twelfth第13 thirteenth第14 fourteenth第15 fifteenth第16 sixteenth第17 seventeenth…第18 eighteenth第19 nineteenth第20 twentieth第21 twenty-first第22 twenty-second第23 twenty-third第24 twenty-fourth第25 twenty-fifth第26 twenty-sixth《第27 twenty-seventh第28 twenty-eighth第29 twenty-ninth第30 thirtieth第31 thirty-first第32 thirty-second第33 thirty-third第34 thirty-fourth第35 thirty-fifth.第36 thirty-sixth第37 thirty-seventh第38 thirty-eighth第39 thirty-ninth第40 fortieth第41 forty-first第42 forty-second第43 forty-third第44 forty-fourth?第45 forty-fifth第46 forty-sixth第47 forty-seventh第48 forty-eighth第49 forty-ninth第50 fiftieth第51 fifty-first第52 fifty-second第53 fifty-third;第54 fifty-fourth第55 fifty-fifth第56 fifty-sixth第57 fifty-seventh第58 fifty-eighth第59 fifty-ninth第60 sixtieth第61 sixty-first第62 sixty-second >第63 sixty-third第64 sixty-fourth第65 sixty-fifth第66 sixty-sixth第67 sixty-seventh 第68 sixty-eighth第69 sixty-ninth第70 seventieth第71 seventy-first、第72 seventy-second 第73 seventy-third 第74 seventy-fourth 第75 seventy-fifth第76 seventy-sixth 第77 seventy-seventh第78 seventy-eighth 第79 seventy-ninth 第80 eightieth,第81 eighty-first第82 eighty-second 第83 eighty-third第84 eighty-fourth 第85 eighty-fifth第86 eighty-sixth第87 eighty-seventh 第88 eighty-eighth 第89 eighty-ninth第90 ninetieth¥第91 ninety-first第92 ninety-second 第93 ninety-third第94 ninety-fourth 第95 ninety-fifth第96 ninety-sixth第97 ninety-seventh 第98 ninety-eighth 第99 ninety-ninth第100》第101onehundredth 特殊疑问句多数都以who,where,when,which,whose,why这类词开头,如:Who is it on the phone谁来的电话How many oranges can yousee in the picture你能在图画上看到多少个橘子Where did you last see it你最后一次看到这东西时是在什么地方呢What did you eatyesterday你昨天吃了些什么How do you usually go toschool你通常是怎么去学校的呢2、特殊疑问句的结构一般为:特殊疑问词+一般疑问句,即:特殊疑问词+be/助动词/情态动词+主语+谓语/表语+(其他),Whose 谁的用来指所属关系,如果作定语,一般后接名词Whose pen is thisWhich 哪个,哪些用来指对人或物在一定范围之内进行选择Which hat is lily’sWhat通常指物,一般用在没有指出范围的情况下What can you see in thepicture(2)疑问副词疑问副词包括when,where,why,how及how与其他副词和形容词组成的疑问词。
辅音字母结尾
辅音字母结尾一般来说,法语单词词末为辅音字母时均是不发音的,但当单词以字母f, l, r, c, q结尾时要发音:1) 以f结尾:sauf - 除...之外2) 以l结尾:ciel - 天空3) 以r结尾:car - 因为4) 以c结尾:lac - 湖public - 公共的5) 以q结尾:coq - 公鸡当然例外到处有,法语特别多,比如:1) tabac - 烟草, blanc - 白色等词尾字母c不发音2) zip - 拉链等词尾字母p要发[p]3) maïs - 玉米, fils - 儿子等词尾字母s要发[s]4) six - 数字6, dix - 数字10等词尾字母x要发[s]5) but - 目标, août - 八月等词尾字母t要发[t]上述例子以外,还有很多特殊情况需要注意。
除了单独出现的辅音字母,辅音字母也会组合出现,常见的字母组合比如-gt,-ps,-ct 等:1) 词尾为gt时,一般来说不发音,如:doigt - 手指例外:vingt单独词尾不发音,但若后面跟有数字,则-gt发[t]的音2) 词尾为ps时,一般来说不发音,如:temps - 时间,corps - 身体3) 词尾为ct时,一般来说要发音,如:direct - 直接的,exact - 准确的例外:respect - 尊敬的词尾-ct不发音上述只是部分辅音字母组合出现在词尾的例子,其它情况需要不断学习和积累。
除了以上规则,法语数字也常常以辅音结尾,其中也涉及到不少发音规则:例如:法语数字尾音的省略以数字six(六)为例,发音[sis]:1. 当数字单独出现,后面没有名词,six就发音[sis],尾音[s]是要发音的。
2. 当数字后面还跟着名词,如:six jours中的six 就要省略尾音[s],发音[si]。
注意:1. 数字600,法语读成six cents,其中的six读[si]。
2. 百分比6%,法语读成six pour cent,其中six读[si]。
基数词序数词表格大全
基数词序数词基数词(0-100)1 one2 two3 three4 four5 five6 six7 seven8 eight9 nine10 ten11 eleven12 twelve13 thirteen14 fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20 twenty 21 twenty-one22 twenty-two23 twenty-three24 twenty-four25 twenty-five26 twenty-six27 twenty-seven28 twenty-eight29 twenty-nine30 thirty31 thirty-one32 thirty-two33 thirty-three34 thirty-four35 thirty-five36 thirty-six37 thirty-seven38 thirty-eight39 thirty-nine40 forty41 forty-one42 forty-two43 forty-three44 forty-four45 forty-five46 forty-six47 forty-seven48 forty-eight49 forty-nine50 fifty51 fifty-one52 fifty-two53 fifty-three54 fifty-four55 fifty-five56 fifty-six57 fifty-seven58 fifty-eight59 fifty-nine60 sixty61 sixty-one62 sixty-two63 sixty-three64 sixty-four65 sixty-five66 sixty-six67 sixty-seven68 sixty-eight69 sixty-nine70 seventy71 seventy-one72 seventy-two73 seventy-three74 seventy-four75 seventy-five76 seventy-six77 seventy-seven78 seventy-eight79 seventy-nine80 eighty81 eighty-one82 eighty-two83 eighty-three84 eighty-four85 eighty-five86 eighty-six87 eighty-seven88 eighty-eight89 eighty-nine90 ninety91 ninety-one92 ninety-two93 ninety-three94 ninety-four95 ninety-five96 ninety-six97 ninety-seven98 ninety-eight99 ninety-nine100 one hundred序数词:第1 first第2 second第3 third第4 fourth第5 fifth第6 sixth第7 seventh第8 eighth第9 ninth第10 tenth第11 eleventh第12 twelfth第13 thirteenth第14 fourteenth第15 fifteenth第16 sixteenth第17 seventeenth 第18 eighteenth第19 nineteenth第20 twentieth第21 twenty-first第22 twenty-second 第23 twenty-third第24 twenty-fourth第25 twenty-fifth第26 twenty-sixth第27 twenty-seventh第28 twenty-eighth第29 twenty-ninth第30 thirtieth第31 thirty-first第32 thirty-second第33 thirty-third第34 thirty-fourth第35 thirty-fifth第36 thirty-sixth第37 thirty-seventh第38 thirty-eighth第39 thirty-ninth第40 fortieth第41 forty-first第42 forty-second第43 forty-third第44 forty-fourth第45 forty-fifth第46 forty-sixth第47 forty-seventh第48 forty-eighth第49 forty-ninth第50 fiftieth第51 fifty-first第52 fifty-second第53 fifty-third第54 fifty-fourth第55 fifty-fifth第56 fifty-sixth第57 fifty-seventh第58 fifty-eighth第59 fifty-ninth第60 sixtieth第61 sixty-first第62 sixty-second第63 sixty-third第54 sixty-fourth第65 sixty-fifth第66 sixty-sixth第67 sixty-seventh第68 sixty-eighth第69 sixty-ninth第70 seventieth第71 seventy-first第72 seventy-second第73 seventy-third第74 seventy-fourth第75 seventy-fifth第76 seventy-sixth第77seventy-seventh第78 seventy-eighth第79 seventy-ninth第80 eightieth第81 eighty-first第82 eighty-second第83 eighty-third第84 eighty-fourth第85 eighty-fifth第86 eighty-sixth第87 eighty-seventh第88 eighty-eighth第89 eighty-ninth第90 ninetieth第91 ninety-first第92 ninety-second第93 ninety-third第94 ninety-fourth第95 ninety-fifth第96 ninety-sixth第97 ninety-seventh第98 ninety-eighth第99 ninety-ninth第100 onehundredth序数词下面把1-99的序数词分为四类:1、第一类first (1st) 第一second (2nd) 第二third (3rd) 第三(在括号里的是缩写形式,均在阿拉伯数字后面加上相应序数词的最后两个字母构成,以下各类与此相同。
英语数字表达方式大全
英语数字表达方式大全0 zero;1 one2 two3 three4 four5 five6 six7 seven8eight9 nine10 ten11 eleven12 twelve13 thirteen14fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20 twenty21 twenty-one22 twenty-two23twenty-three30 thirty32 thirty-two40 forty50 fifty60 sixty70 seventy80 eighty90 ninety100 one hundred101 onehundred and one156 one hundred and fifty-six192 onehundred and ninty-two200 two hundred300 threehundred400 four hundred500 five hundred600 sixhundred700 seven hundred800 eight hundred900 ninehundred1,000 one thousand1,001 one thousand andone1,300 thirteen hundred;one thousand and threehundred2,000 two thousand2,034 two thousand andthirty-four6,502 six thousand five hundred and two38,000thirty-eight thousand45,672 forty-five thousand six hundredand seventy-two500,000 five hundred thousand1,000,000one million3,123,400 three million,one hundred andtwenty-three thousand and four hundred8,000,000 eightmillion47,000,000 forty-seven million900,000,000 ninehundred million1,000,000,000 a milliard,one milliard(美作:abillion,one billion)1,050,000,000 one billion and fiftymillion10,000,000,000 ten billion200,000,000,000 twohundred billion1,000,000,000,000 a billion,one billion(美作:a trillion,one trillion)6,000,000,000,000 six million million序数词first第一second第二third第三fourth第四fifth第五sixth第六seventh第七eighth第八ninth第九tenth第十eleventh第十一twelfth第十二thirteenth第十三fourteenth 第十四fifteenth第十五sixteenth第十六seventeenth第十七eighteenth第十八nineteenth第十九twentieth第二十twenty-first第二十一twenty-second第二十二twenty-third 第二十三thirtieth第三十thirty-first第三十一fortieth第四十fiftieth第五十sixtieth第六十seventieth第七十eightieth第八十ninetieth第九十(one)hundredth第一百(one)hundred and first第一百零一hundred and thirty-fourth第一百三十四two-hundredth 第二百three-hundredth第三百four-hundredth 第四百five-hundredth第五百six-hundredth 第六百seven-hundredth第七百eight-hundredth 第八百nine-hundredth 第九百(one)thousandth 第一千thousand and first 第一千零一two thousand and thirty-fourth第二千零三十四ten thousandth 第一万(one)millionth 第一百万(美作:billionth)billionth第十亿(美作:trillionth)分数1/2 : one-half;a half1/3 :one-third3/4 : three-fourths1/5 : one-fifth2/5 : two-fifths7/8 : seven-eighths1/10 : one-tenth;a tenth1/100 :one-hundredth;one per cent1/1000 :one-thousandth1/10000 : one ten-thousandth2‘ 1/2:two and one half;two and a h alf4’ 2/3:four and two-thirds100% : one hundred per cent0.5% : point five per cent0.46% :point four six per cent2.05 : two point nought five;two pointO five6.003 : six point nought nought three;six point O Othree78.12 : seventy-eight point one two119 : one onenine120 : one two oh688 : six double-eight5337 : fivedouble-three seven6512 : six five one two97868 : nineseven eight six eight893493 : eight nine three four ninethree737964 : seven three seven nine six four62374881 :six two three seven four double-eight one1840 eighteenforty1900 nineteen hundred1992 nineteen ninety-two数字表达类基本要求一、数字表达类(Numbers)研究生入学考试听力试题中第一部分为填充表格,其中很大一部分是根据所听内容填写诸如数字、时间和地点等具体信息。
six画法几何及制图(城市规划制图篇)
• 制图要求:在行政地图和上位规划图中进 行标识制图,或原样采用上位规划的图纸 ,,并加注相应标识。
二、城市总体规划图纸及制图要求
• (3)城市用地工程地质评价图 • a.不同工程地质条件和地面坡度的范围、界线、参数; • b.潜在地质灾害(滑坡、崩塌、溶洞、泥石流、地下采
一、城市规划的概念
• 10、城市规划阶段(深度) • 阶段:总体规划;控制性规划;修建性
规划
• 总体规划:国家有关政策的要求,进行城市 性质、发展方向、规模大小等发展建设 的“总体布局”规划,一般以20年为规 划期。总体规划之下又可分为数期(近 期、中期、远期)的建设规划。
一、城市规划的概念
• 11、城市规划主要成果 • 阶段: • 成果:
• (1)项目所在地区位图 • (2)市(县)域城镇分布现状图 • (3)新建城市和城市新发展地区应绘制城市用地工程
地质评价图
• (4)市(县)域城镇体系规划图 • (5)城市总体规划图 • (6)郊区规划图 • (7)近期建设规划图 • (8)各项专业规划图 • 主要制图要点:依据原有场地基本图(卫星图、地形
关于规划与设计
• 规划与设计的区别
• 规划与设计关注事物的角度不同。
• 规划应更多关注为了满足发展需求的纲领性 方向、目标、策略和步骤。——宏观层面 (政策、规范思维);
• 设计则对应到规划中的目标,具体给出这些 目标如何以具体形式和步骤来实现、并适当 进行概念验证,并形成建设工作量表格。— —微观层面(形式、方法、技巧)
关于规划与设计
• 规划的特点
• 规划具有长远性、全局性、战略性、方向 性、概括性和鼓动性。
同类词
同类词,要求能够熟练认读和拼写1、数字类:(从1到20)one, two, three, four, five, six, seven, eight, nine, ten,eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, twenty-one(21), twenty-two(22)(从30到90)thirty, forty, fifty, sixty, seventy, eighty, ninety, ninety-six(96)2、职业:farmer农民, policeman警察, nurse护士, vet兽医, doctor医生, pilot飞行员, dancer舞蹈演员, student学生, teacher教师, worker工人, singer歌手, cook厨师, driver 司机, engineer工程师, juggler杂技演员3、地点:supermarket超市, train station火车站, park公园, movie theater电影院, swimming pool游泳池, toilet公共厕所, bus stop汽车站, post office邮局, hospital医院, school学校, police station警察局, library图书馆, bank 银行, fire station消防站, zoo动物园, shop商店, restaurant 餐厅, book store书店,market市场4、动物类:dog狗, cat猫, fish鱼, panda熊猫, frog青蛙,fox狐狸, ant蚂蚁, pig猪, rabbit兔子, bee蜜蜂, bear熊, bird鸟, monkey猴子, duck鸭子, tiger老虎, lion狮子, goat 山羊, crab螃蟹, butterfly蝴蝶, snake蛇, elephant大象, horse马, crocodile鳄鱼, insect昆虫, turtle乌龟, leopard 豹子, donkey驴, squirrel松鼠, cow牛, sheep绵羊,giraffe 长颈鹿, deer鹿5、服装类:dress连衣裙, skirt短裙, shirt,衬衫 T-shirt体恤衫, sweater毛衣, coat大衣, jacket夹克衫, cap鸭舌帽, hat礼帽, tie领带,shoes鞋, socks袜子, trousers长裤, shorts短裤, jeans牛仔裤, pajamas睡衣6、方位:on在上面, in在里面, under在下面, next to在旁边, in front of在前面, behind在后面, near附近, between …and在两者之间7、水果类:apple苹果, banana香蕉, orange橘子, peach桃子, pear梨lemon柠檬, mango芒果, pineapple菠萝,watermelon西瓜, kiwifruit猕猴桃, strawberry草莓8、颜色类:red红, orange橘黄, yellow黄, green绿, blue蓝, pink粉, purple紫, brown棕, gray(grey)灰, black黑, whit白9、饮料类:tea茶, milk牛奶, water水, juice果汁, beer啤酒, coffee咖啡10、蔬菜类:bean豆角, potato土豆, tomato西红柿, carrot 胡萝卜, onion洋葱, cucumber黄瓜, eggplant茄子mushroom 蘑菇, cauliflower菜花,cabbage卷心菜11、食物类:rice米饭, egg鸡蛋, cake蛋糕, hot dog热狗,pizza比萨饼, noodles面条, chicken鸡肉, hamburger汉堡包, French fries炸薯条, ice cream冰淇淋, salad沙拉, sandwich 三明治, cookies饼干, bread面包12、学科类:Chinese中文, English英语, P.E.体育, math数学, music音乐, art美术13、文具类:bag书包, book书, pen钢笔, pencil铅笔, pencil-box铅笔盒, desk课桌, ruler尺子, eraser橡皮14、房间:study书房, living room客厅, bedroom卧室,bathroom浴室,洗手间, kitchen厨房15、交通工具:car小汽车, bus公共汽车, bike自行车, jeep 吉普车, train火车, plane飞机, ship船, boat小船,taxi出租车16、家庭用品:television(TV)电视, computer电脑, radio收音机, walkman随身听, diskman CD播放机, camera照相机, clock钟表, watch手表, umbrella雨伞,17、身体部位:hand手, foot脚, ear耳朵, eye眼睛, mouth 嘴, nose鼻子, hair头发, shoulder肩膀, arm手臂, finger 手指, stomach肚子, leg腿, knee膝盖, toe脚趾, chest胸, tongue舌头, face脸18、家庭成员:mother妈妈, father爸爸, sister姐妹, brother 兄弟, grandmother祖母, grandfather祖父, aunt阿姨, uncle 叔叔19、动词:sing唱歌, dance跳舞, swim游泳, walk走, run 跑, jump跳, drink喝, eat吃, sleep睡觉, play玩, wash洗, cook做饭, write写, study学习, paint画, touch摸, litter乱扔垃圾, move移动, cry哭, smoke吸烟20、国家:China中国, Japan日本, Canada加拿大, Britain英国, England英国, U.S.A.美国, America美国, France法国, Germany德国, u.k英国, Austrail澳大利亚21、反义词:tall高的-short矮的, fat胖的-thin瘦的, long 长的-short短的, big大的-small小的, old年轻的-young年长的, new新的-old旧的, cold凉的-hot热的, cheap便宜的-expensive昂贵的, right右边-left左边, sad悲伤地-happy快乐的, dangerous危险地-safe安全的22、常用英文名字:女生:Ann, Anna, Cathy, Cici, Helen, Jane, Jenny, Kitty, Kate, Lily, Lucy, Mary, Nancy, Rita, Susan, Tina, Wang Ling, Li Xiaofan(中文名字写法)男生:Andy, Bob, Jim, Jack, Mike, Nick, Oscar, Peter, Sam, Tom, Tim, Tony, Tommy, Yang Peng, Yu Minghao(中文名字写法)六年级英语总复习单词学习用品(school things)Pen钢笔 pencil铅笔 pencil-case铅笔盒 ruler尺子 book书bag包 post card明信片 newspaper报纸 Chinese book语文书English book英语书 math book数学书人体(body)Foot脚 head头 face脸 hair头发 nose鼻子 mouth嘴 eye眼睛 ear耳朵 arm手臂 hand手 leg腿颜色(colours)red红blue蓝 yellow黄green绿white白 black黑 pink 粉purple紫orange橙 brown棕动物(animals)猫cat 狗dog 猪pig 鸭duck 兔rabbit 马horse 大象elephant蚂蚁ant 鱼fish 鸟bird蛇snake 猴monkey 熊猫panda 熊bear 狮子lion 老虎tiger人物(people)朋友friend 男孩boy 女孩girl 母亲mother 父亲father 姐妹sister 兄弟brother 叔叔;舅舅uncle 男人man 女人woman 先生Mr 小姐Miss 女士;小姐lady 妈妈mom 爸爸dad 父母parents (外)祖母grandma/grandmother(外)祖父grandpa/grandfather 姑姑aunt堂(表)兄弟;堂(表)姐妹cousin儿子son 婴儿baby 同学classmate职业(jobs)教师teacher 学生student 医生doctor 护士nurse 司机driver 农民farmer 歌唱家singer 作家writer食品、饮料(food and drink)米饭rice 面包bread 牛奶milk 水water 蛋egg 鱼fish 豆腐tofu 蛋糕cake 热狗hot dog 汉堡包hamburger 饼干biscuit 果酱jam 面条noodle 肉meat 鸡肉chicken 冰ice 冰激凌ice-cream 可乐Coke 果汁juice 茶tea 咖啡coffee 早餐breakfast 午餐lunch 晚餐dinner/dinner 一餐meal水果、蔬菜(fruit and vegetable )苹果apple 香蕉banana 梨pear 橙orange 西瓜watermelon 衣服(clothes)夹克衫jacket 衬衣shirt T恤衫T-shirt 短裙子skirt 连衣裙dress 鞋子shoes 毛衣sweater 上衣coat短裤shorts(有沿的)帽子hat 便帽cap交通工具( vehicles )自行车bike 公共汽车bus 火车train 小船boat 轮船ship 小汽车car 出租车taxi 吉普车jeep 飞机plane杂物(otherthings)窗户window 门door 课桌desk 椅子chair 床bed 计算机computer 图画;照片picture 足球football 礼物present 电话phone 沙发sofa 桌子table 电视TV 钥匙key 照片photo 筷子chopsticks 玩具toy 球ball 气球balloon 风筝kite 盒子box 伞umbrella 电子邮件e-mail 钱money地点(locations)家home 房间room 卧室bedroom 卫生间bathroom 起居室living room 厨房kitchen 教室classroom 学校school 公园park 图书馆library 邮局post office 警察局police office 医院hospital 电影院cinema 农场farm 动物园zoo 花园garden 书房study 操场playground 长城the Great Wall 超市supermarket 银行bank国家country 城市city 公交车站bus stop课程(classes)体育运动sports 科学science 语文Chinese 数学math 体育PE 英语English国家、城市( countries and cities )中国China/PRC 美国America/USA 联合王国UK 英国England 加拿大Canada/CAN 澳大利亚Australia 纽约New York 伦敦London 悉尼Sydney 莫斯科Moscow气象(weather )寒冷的cold 温暖的warm 凉爽的cool 下雪的snowy 晴朗的sunny 炎热的hot 下雨的rainy 有风的windy 多云的cloudy 天气预报 weather report景物( nature )河流river 湖泊lake 公路road 房子house 雨rain 云cloud 太阳sun 山mountain 天空sky 彩虹rainbow 风wind 月亮moon植物(plants) 花flower 树tree星期( week ) 星期一Monday 星期二Tuesday 星期三Wednesday 星期四Thursday 星期五Friday 星期六Saturday 星期日Sunday 周末weekend月份(months)January (Jan.)一月份 February(Feb.) 二月份 March(Mar.) 三月份 April 四月份 May五月份 June六月份 July七月份Auguest(Aug.)八月份 Septemper(Sept.) 九月份October(Oct.) 十月份 November(Nov.) 十一月December(Dec.) 十二月季节(seasons) 春spring 夏summer 秋fall 冬winter 方位(directions) 南south 东east 西west 左边left右边right患病(illness) 发烧have a fever 疼痛hurt 感冒have a cold 数词( numbers ) 一one 二two 三three 四four 五five 六 six 七 seven 八eight 九nine 十ten 十一eleven 十二twelve 十三thirteen 十四 fourteen 十五fifteen 十六sixteen 十七seventeen 十八eighteen 十九nineteen 二十twenty 三十thirty 四十forty 五十fifty 六十sixty 七十seventy 八十eighty 九十ninety forty-two四十二百one hundred 一百三十六one/a hundred and thirty-six first(1st)第一 second(2nd)第二third(3rd)第三 fourth(4th) 第四 fifth(5th)第五sixth(6th)第六 seventh(7th)第七 eighth (8th) 第八ninth (9th) 第九 tenth (10th) 第十 eleventh (11th) 第十一 twelfth(12th)第十二 twentieth (20th) 第二十thirtieth (30th) 第三十 fortieth (40th) 第四十fiftieth (50th) 第五十 sixtieth (60th) 第六十seventieth (70th) 第七十 eightieth (80th) 第八十ninetieth (90th) 第九十 fifty-sixth每五十六形容词(adj.)big大的 small小的 long长的 tall高的 short短的 young年轻的 old旧的;老的 strong健壮的 thin瘦的 active积极活跃的 quiet安静的 nice好看的 kind和蔼亲切的 strict严格的 smart聪明的 funny滑稽可笑的 sweet甜的 favourite最喜爱的 clean干净的 tired疲劳的 excited兴奋的 angry生气的happy高兴的 bored无聊的 sad忧愁的 taller更高的 shorter 更矮的 stronger更强壮的 older年龄更大的 younger更年轻的 bigger更大的 good好的 fine好的 great很好的 heavy重的 new新的 fat胖的 happy快乐的 right对的 hungry饥饿的little小的 lovely可爱的 beautiful漂亮的 colourful色彩鲜艳的 pretty漂亮的 cheap便宜的 expensive昂贵的healthy健康的 ill有病的 helpful有帮助的 high高的 easy 简单的 better更好的介词(pron.)I我 we我们 you你;你们 he他 she她 it它 they他(她,它)们 my我的 our我们的 your你的;你们的 his他的 her她的 what什么 who谁 when什么时候 which 哪个 where那how怎样 how much how many动词(v.)play-(ed)玩;踢 swim(swam)游泳 fly(flew)飞 jump跳 walk走 run(ran)跑 climb爬 eat(ate)吃 sleep(slept)睡觉 like 像,喜欢 have(had)有;吃 turn转弯 buy(bought)买 take(took)买;带 live居住 teach(taughr)教 go(went)去 study(studied)学习 learn学习 sing(sang)唱歌 dance跳舞 row划 do(did)做 do homework做作业 do housework做家务 watch TV看电视read(read)books读书 cook the meals做饭 water the flowers 浇花 do morning exercises晨练;做广播操 eat breakfast 吃早饭 eat dinner吃晚饭 go to school 上学 have English mountains 上英语课 play sports进行体育运动 get(got) up起床 climb mountains爬山 go shopping买东西 play the piano弹钢琴 visit grandparents看望(外)祖父母 go hiking 去远足 fly kites 放风筝 make a snowman 堆雪人 plant trees 种树 draw(drew) pictures画画 cook dinner做饭 read a book 看书 answer the phone 接电话 listen to music听音乐 clean the room打扫房间 write(wrote) a letter写信 write ane-mail写电子邮件 drink(drank) water喝水 take pictures照相 play chess下棋 have a picnic 举行野餐 get to到达ride(rode) a bike 骑自行车 play the violin 拉小提琴 make kites 制作风筝 collect stamps 集邮 meet(met)见面welcome 欢迎 thank 谢谢 love爱 work 工作 drink(drank) 喝 smell 闻 look 看 guess 猜 help 帮助 pass 传递show 展示 use使用 clean打扫 open打开 close关上 put放 tell(told) 告诉 kick踢 ride (rode)骑 stop停 wait等 find 寻找到 drive(drove) 驾驶 send(sent) 寄 wash洗shine 照耀 feel(felt) 感觉到 think(thought)思考meet(met)遇见 leave(let)离开 wake (woke) up 醒来put on穿上 take off 脱掉 wear(wore)穿 go home回家 go to bed 上床睡觉 play computer games玩电脑游戏get off下车 go straight向前直走 turn lest向左走 turn right向右走。
Unit Six 语法篇
Unit Six 语法篇____________________________________________________________________________________________________________________________________________________________________重点掌握简单句和并列复合句,方式副词的用法。
重点语法:一、简单句、并列句和复合句1.只含有一个主谓结构并且句子各成分都只由单词或短语构成的独立句子叫做简单句。
英语简单句可分为五种基本句型,其它的句子可看成是这几种基本句型的扩展、组合、倒装、省略。
这五个基本句式:(1)主谓结构(S + V)(2)主系表结构(S + V + P )(3)主谓宾结构(S + V + O )(4)主谓双宾结构(S + V + IO + DO)(50主谓宾补结构(S + V + O + C)2.两个或两个以上的简单句用并列连词或标点符号连接而成的句子叫并列句。
由并列连词(and, but, or等)或分号(;)把两个或两个以上的简单句连在一起构成。
常见的用于连接两个简单句的并列连词有:and,but, or,so,for语从句、表语从句和同位语从句和定语从句等三种。
二、方式副词在英语中我们常常见到一类表示动作行为的词汇,也就是方式副词。
大部分的方式副词都是以ly结尾。
比如:quietly, heavily, carefully, happily, warmly, correctly, politely, angrily等。
方式副词通常位于动词(及其宾语)之后。
方式副词(主要是单个的方式副词)有时也可位于主语与动词之间。
方式副词通常不放在动词与宾语之间。
1.They bought Granny a present ____ she liked it very much.A. andB. soC. butD. while2.They all went to the cinema I didn’t.A. getB. orC. butD. so3.Bill put his hands behind his back, ____ nobody could see his hands.A. soB. andC. orD. but4.He read the letter____________.(slow)5.He_________got dressed.(quick)解析:1.本题前后两句表示并列关系。
数词的英语知识点总结
数词的英语知识点总结数词的英语知识点总结 1(一)基数词在英语中表示数目的词称为基数词。
1.基数词的构成(1)1-20one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirt een,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen,twenty(2)21-99 先说“几十”,再说“几”,中间加连字符。
23→twenty-three,34→thirty-four,(3)101—999先说“几百”,再加and,再加末两位数或末位数;586→five hundred and eighty-six,803→eight hundred and three(4)l,000以上,先从右往左数,每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为million,第三个“,”前为billion,然后一节一节地表示。
9,785→nine thousand, seven hundred and e ighty-five6,260,309→six million two hundred and sixty thousand three hundred and nine750,000,000,000→seven hundred and fifty, billion2.基数词的用法(1)表示数量Eg. 一 How many books would you like?一I would like two.(2)表示号码eg.My phone number is 6887789.(3)表示时间eg.I watch CCTV News at seven o’clock every evening.(4)表示“十”的数词的复数可以表示人的岁数或年代。
eg. He is in his early thirties.他有三十来岁(31—34岁):This took place in the 1930s.这事发生在二十世纪三十年代;(5)表具体数字时,hundred,thousand,million用单数。
six滚动轴承的公差与配合
2
负荷的大小
GB/T275-1993规定,向心轴承负荷的大小按径向负荷 规定,向心轴承负荷的大小按径向负荷P 规定 与额定负荷C的比值分 轻负荷、正常负荷和重负荷。 的比值分: 与额定负荷 的比值分:轻负荷、正常负荷和重负荷。
负荷类型 轻负荷 正常负荷 重负荷 P值的大小 P≤0.07C 0.07C< 0.07C<P≤0.15 C P>0.15C
滑动轴承
滚动轴承
滚动轴承特点 标准件,具有效率高、 标准件,具有效率高、 起动快、摩擦阻力小、 起动快、摩擦阻力小、更 换简单、成本低等优点。 换简单、成本低等优点。
`
广泛用于机床、汽车、 广泛用于机床、汽车、 仪器仪表等各种机器部位 中的转动支承。 中的转动支承。
Wang chenggang
`
Wang chenggang
+ 0 -
K6 K7
M6
定向负荷
旋转负荷
M7 N6 N7 P6 P7
`
Wang chenggang
已知减速器的功率为5KW,从动轴转速为83r/min,当 已知减速器的功率为5KW,从动轴转速为83r/min, 5KW 83r/min 例: 量径向动负荷P 883N,其两端的轴承6211 6211深沟球轴 量径向动负荷P为883N,其两端的轴承6211深沟球轴 D=95mm,额定动负荷 额定动负荷C 33354N) 承(d=55mm ,D=95mm,额定动负荷C为33354N),试确 定轴径和外壳体孔的公差带代号, 定轴径和外壳体孔的公差带代号,形位公差值和表面 粗糙度值,并将它们分别标注在装配图和零件图上。 粗糙度值,并将它们分别标注在装配图和零件图上。 解: 1 等级确定: 轴承的精度等级 0 等级确定: 2 3 4 受力: 内圈: 受力: 内圈: 旋转负荷 外圈: 外圈: 定向负荷 受力大小: P/C=0.0265轻负荷 受力大小: P/C=0.0265轻负荷 确定轴径和壳体孔的公差带 轴 径:Φ55j6( 壳体孔: 壳体孔: Φ 95H7(
英语1~99的基数词和序数词
基数词
1. one 2. two 3. three 4. four 5. five 6. six 7. seven 8. eight 9. nine 10. ten 11. eleven 12. twelve 13. thirteen 14. fourteen 15. fifteen 16. sixteen 17. seventeen 18. eighteen 19. nineteen 20. twenty 21. twenty-one 22. twenty-two 23. twenty-three 24. twenty-four 25. twenty-five 26. twenty-six 27. twenty-seven 28. twenty-eight 29. twenty-nine 30. thirty
31. thirty-one 32. thirty-two 33. thirty-three 34. thirty-four 35. thirty-five 36. thirty-six 37. thirty-seven 38. thirty-eight 39. thirty-nine 40. forty 41. forty-one 42. forty-two 43. forty-three 44. forty-four 45. forty-five 46. forty-six 47. forty-seven 48. forty-eight 49. forty-nine 50. fifty 51. fifty-one 52. fifty-two 53. fifty-three 54. fifty-four 55. fifty-five 56. fifty-six 57. fifty-seven 58. fifty-eight 59. fifty-nine 60. sixty 61. sixty-one 62. sixty-two 63. sixty-three 64. sixty-four
100以内的英文数字
100以内的英文数字一、10个数字0 zero 1 one 2 two 3 three 4 four5 five6 six7 seven8 eight9 nine二、整十数字10 ten 20 twenty 30 thirty 40 forty50 fifty 60 sixty 70 seventy 80 eighty90 ninety 100 one hundred三、几十数字⑴十几数字11 eleven 12 twelve 13 thirteen 14 fourteen15 fifteen 16 sixteen 17 seventeen 18 eighteen19 nineteen⑵二十几数字21 twenty-one 22 twenty-two 23 twenty-three24 twenty-four 25 twenty-five 26 twenty-six27 twenty-seven 28 twenty-eight 29 twenty-nine⑶三十几数字31 thirty-one 32 thirty-two 33 thirty-three34 thirty-four 35 thirty-five 36 thirty-six37 thirty-seven 38 thirty-eight 39 thirty-nine⑷四十几数字41 forty-one 42 forty-two 43 forty-three44 forty-four 45 forty-five 46 forty-six47 forty-seven 48 forty-eight 49 forty-nine⑸五十几数字51 fifty-one 52 fifty-two 53 fifty-three54 fifty-four 55 fifty-five 56 fifty-six57 fifty-seven 58 fifty-eight 59 fifty-nine⑹六十几数字61 sixty-one 62 sixty-two 63 sixty-three64 sixty-four 65 sixty-five 66 sixty-six67 sixty-seven 68 sixty-eight 69 sixty-nine⑺七十几数字71 seventy-one 72 seventy-two 73 seventy-three74 seventy-four 75 seventy-five 76 seventy-six77 seventy-seven 78 seventy-eight 79 seventy-nine⑻八十几数字81 eighty-one 82 eighty-two 83 eighty-three84 eighty-four 85 eighty-five 86 eighty-six87 eighty-seven 88 eighty-eight 89 eighty-nine⑼九十几数字91 ninety-one 92 ninety-two 93 ninety-three 94 ninety-four 95 ninety-five 96 ninety-six97 ninety-seven 98 ninety-eight 99 ninety-nine四、几百几千几万数字一百多的数字前面写个“one hundred and”两百多的数字前面写个“two hundred and”千thousand万myriad百万million例:100 one hundred1,000 one thousand10000 one myriad1,000,000 one million100 one hundred101 one hundred and one156 one hundred and fifty-six192 one hundred and ninty-two200 two hundred300 three hundred400 four hundred500 five hundred600 six hundred700 seven hundred800 eight hundred900 nine hundred1,000 one thousand1,001 one thousand and one1,300 thirteen hundred;one thousand and three hundred 2,000 two thousand2,034 two thousand and thirty-four6,502 six thousand five hundred and two38,000 thirty-eight thousand45,672 forty-five thousand six hundred and seventy-two 500,000 five hundred thousand1,000,000 one million3,123,400 three million,one hundred and twenty-three thousand and four hundred8,000,000 eight million47,000,000 forty-seven million900,000,000 nine hundred million1,000,000,000 a milliard,one milliard(美作:a billion,one billion)1,050,000,000 one billion and fifty million10,000,000,000 ten billion200,000,000,000 two hundred billion1,000,000,000,000 a billion,one billion(美作:a trillion,one trillion)6,000,000,000,000 six million million。
1到90的英语序数词和基数词
1到90的英语序数词和基数词1 one2 two3 three4 four5 five6 six7 seven8 eight9 nine 10 ten11 eleven 12 twelve 13 thirteen 14 fourteen 15 fifteen16 sixteen 17 seventeen 18 eighteen 19 nineteen 20 twenty21 twenty-one 22 twenty-two 23 twenty-three 24 twenty-four 25 twenty-five26 twenty-six 27 twenty-seven 28 twenty-eight 29 twenty-nine 30 thirty31 thirty-one 32 thirty-two 33 thirty-three 34 thirty-four 35 thirty-five36 thirty-six 37 thirty-seven 38 thirty-eight 39 thirty-nine 40 forty41 forty-one 42 forty-two 43 forty-three 44 forty-four 45 forty-five46 forty-six 47 forty-seven 48 forty-eight 49 forty-nine 50 fifty51 fifty-one 52 fifty-two 53 fifty-three 54 fifty-four 55 fifty-five56 fifty-six 57 fifty-seven 58 fifty-eight 59 fifty-nine 60 sixty61 sixty-one 62 sixty-two 63 sixty-three 64 sixty-four 65 sixty-five66 sixty-six 67 sixty-seven 68 sixty-eight 69 sixty-nine 70 seventy71 seventy-one 72 seventy-two 73 seventy-three 74 seventy-four 75 seventy-five 76 seventy-six 77 seventy-seven 78 seventy-eight 79 seventy-nine 80 eighty81 eighty-one 82 eighty-two 83 eighty-three 84 eighty-four 85 eighty-five86 eighty-six 87 eighty-seven 88 eighty-eight 89 eighty-nine 90 ninety【序数词:】第1 first 1st 第2 second 2nd第3 third 3rd 第4 fourth 4th第5 fifth 5th 第6 sixth 6th第7 seventh 7th 第8 eighth 8th第9 ninth 9th 第10 tenth 10th第11 eleventh 11th 第12 twelfth 12th第13 thirteenth 13th 第14 fourteenth 14th第15 fifteenth 15th 第16 sixteenth 16th第17 seventeenth 17th 第18 eighteenth 18th第19 nineteenth 19th 第20 twentieth 20th第21 twenty-first 21st 第22 twenty-second 22nd第23 twenty-third 23rd 第24 twenty-fourth 24th第25 twenty-fifth 25th 第26 twenty-sixth 26th第27 twenty-seventh 27th 第28 twenty-eighth 28th第29 twenty-ninth 29th 第30 thirtieth 30th第31 thirty-first 31st 第32 thirty-second第33 thirty-third 第34 thirty-fourth第35 thirty-fifth 第36 thirty-sixth第37 thirty-seventh 第38 thirty-eighth第39 thirty-ninth 第40 fortieth第41 forty-first 第42 forty-second第43 forty-third 第44 forty-fourth第45 forty-fifth 第46 forty-sixth第47 forty-seventh 第48 forty-eighth第49 forty-ninth 第50 fiftieth第51 fifty-first 第52 fifty-second第53 fifty-third 第54 fifty-fourth第55 fifty-fifth 第56 fifty-sixth第57 fifty-seventh 第58 fifty-eighth第59 fifty-ninth 第60 sixtieth第61 sixty-first 第62 sixty-second第63 sixty-third 第64 sixty-fourth第65 sixty-fifth 第66 sixty-sixth第67 sixty-seventh 第68 sixty-eighth第69 sixty-ninth 第70 seventieth第71 seventy-first 第72 seventy-second第73 seventy-third 第74 seventy-fourth第75 seventy-fifth 第76 seventy-sixth第77 seventy-seventh 第78 seventy-eighth 第79 seventy-ninth 第80 eightieth第81 eighty-first 第82 eighty-second第83 eighty-third 第84 eighty-fourth第85 eighty-fifth 第86 eighty-sixth第87 eighty-seventh 第88 eighty-eighth第89 eighty-ninth 第90 ninetieth。
Six教案首页
Lecture Six教案首页备注:教学进程一栏可根据教学内容的多少自定页数。
Lecture SixPart One William Blake (1757-1827)I. Introduction to William BlakeWilliam Blake was born in London on November 28, 1757. From early childhood, Blake spoke of having visions—at four he saw God "put his head to the window"; around age nine, while walking through the countryside, he saw a tree filled with angels. Although his parents tried to discourage him from "lying," they did observe that he was different from his peers and did not force him to attend conventional school. He learned to read and write at home. At age ten, Blake expressed a wish to become a painter, so his parents sent him to drawing school. Two years later, Blake began writing poetry. When he turned fourteen, he apprenticed with an engraver because art school proved too costly. One of Blake's assignments as apprentice was to sketch the tombs at Westminster Abbey, exposing him to a variety of Gothic styles from which he would draw inspiration throughout his career. After his seven-year term ended, he studied briefly at the Royal Academy.In 1782, he married an illiterate woman named Catherine Boucher. Blake taught her to read and to write, and also instructed her in draftsmanship. Later, she helped him print the illuminated poetry for which he is remembered today; the couple had no children. In 1784 he set up a print shop with a friend and former fellow apprentice, James Parker, but this venture failed after several years. For the remainder of his life, Blake made a meager living as an engraver and illustrator for books and magazines. In addition to his wife, Blake also began training his younger brother Robert in drawing, painting, and engraving. Robert fell ill during the winter of 1787 and succumbed, probably to consumption. As Robert died, Blake saw his brother's spirit rise up through the ceiling, "clapping its hands for joy." He believed that Robert's spirit continued to visit him and later claimed that in a dream Robert taught him the printing method that he used in Songs of Innocence and other "illuminated" works.Blake's first printed work, Poetical Sketches(1783), is a collection of apprentice verse, mostly imitating classical models. The poems protest against war, tyranny, and King George III's treatment of the American colonies. He published his most popular collection, Songs of Innocence, in 1789 and followed it, in 1794, with Songs of Experience. Some readers interpret Songs of Innocence in a straightforward fashion, considering it primarily a children's book, but others have found hints at parody or critique in its seemingly naive and simple lyrics. Both books of Songs were printed in an illustrated format reminiscent of illuminated manuscripts. The text andillustrations were printed from copper plates, and each picture was finished by hand in watercolors.Blake was a nonconformist who associated with some of the leading radical thinkers of his day, such as Thomas Paine. In the prose work The Marriage of Heaven and Hell(1790-93), he satirized oppressive authority in church and state.In 1800 Blake moved to the seacoast town of Felpham, where he lived and worked until 1803 under the patronage of William Hayley. He taught himself Greek, Latin, Hebrew, and Italian, so that he could read classical works in their original language. In Felpham he experienced profound spiritual insights that prepared him for his mature work, the great visionary epics written and etched between about 1804 and 1820. Milton (1804-08), Vala, or The Four Zoas (1797; rewritten after 1800), and Jerusalem (1804-20) have neither traditional plot, characters, rhyme, nor meter. They envision a new and higher kind of innocence, the human spirit triumphant over reason.Blake believed that his poetry could be read and understood by common people, but he was determined not to sacrifice his vision in order to become popular. In 1808 he exhibited some of his watercolors at the Royal Academy, and in May of 1809 he exhibited his works at his brother James's house. Some of those who saw the exhibit praised Blake's artistry, but others thought the paintings "hideous" and more than a few called him insane. Blake's poetry was not well known by the general public, but he was mentioned in A Biographical Dictionary of the Living Authors of Great Britain and Ireland, published in 1816. Samuel Taylor Coleridge, who had been lent a copy of Songs of Innocence and of Experience, considered Blake a "man of Genius," and Wordsworth made his own copies of several songs. Charles Lamb sent a copy of "The Chimney Sweeper" from Songs of Innocence to James Montgomery for his Chimney-Sweeper's Friend, and Climbing Boys' Album(1824), and Robert Southey (who, like Wordsworth, considered Blake insane) attended Blake's exhibition and included the "Mad Song" from Poetical Sketches in his miscellany, The Doctor (1834-1837).Blake's final years, spent in great poverty, were cheered by the admiring friendship of a group of younger artists who called themselves "the Ancients." In 1818 he met John Linnell, a young artist who helped him financially and also helped to create new interest in his work. It was Linnell who, in 1825, commissioned him to design illustrations for Dante's Divine Comedy, the cycle of drawings that Blake worked on until his death in 1827.II. Select ReadingThe LambLittle lamb, who made thee?Dost thou know who made thee? Gave thee life, and bid thee feedBy the stream and o'er the mead; Gave thee clothing of delight, Softest clothing, woolly, bright; Gave thee such a tender voice, Making all the vales rejoice?Little lamb, who made thee?Dost thou know who made thee?Little lamb, I'll tell thee,Little lamb, I'll tell thee:He is called by thy name,For He calls Himself a Lamb.He is meek, and He is mild;He became a little child.I a child, and thou a lamb,We are called by His name.Little lamb, God bless thee!Little lamb, God bless thee!The TigerTiger! Tiger! burning brightIn the forests of the night,What immortal hand or eyeCould frame thy fearful symmetry?In what distant deeps or skies Burnt the fire of thine eyes?On what wings dare he aspire? What the hand dare seize the fire?And what shoulder, and what art,Could twist the sinews of thy heart?And when thy heart began to beat,What dread hand? and what dread feet?What the hammer? what the chain?In what furnace was thy brain? What the anvil? what dread graspDare its deadly terrors clasp?When the stars threw down their spears,And watered heaven with their tears,Did he smile his work to see?Did he who made the Lamb make thee?Tiger! Tiger! burning brightIn the forests of the night,What immortal hand or eyeDare frame thy fearful symmetry?The Sick RoseO Rose, thou art sick!The invisible worm,That flies in the night,In the howling storm,Has found out thy bedOf crimson joy;And his dark secret loveDoes thy life destroy.The Chimney SweeperWhen my mother died I was very young,And my father sold me while yet my tongueCould scarcely cry 'weep! 'weep! 'weep! 'weep!So your chimneys I sweep, and in soot I sleep.There's little Tom Dacre, who cried when his head, That curled like a lamb's back, was shaved: so I said, "Hush, Tom! never mind it, for when your head's bare, You know that the soot cannot spoil your white hair."And so he was quiet; and that very night,As Tom was a-sleeping, he had such a sight, -That thousands of sweepers, Dick, Joe, Ned, and Jack, Were all of them locked up in coffins of black.And by came an angel who had a bright key,And he opened the coffins and set them all free;Then down a green plain leaping, laughing, they run,And wash in a river, and shine in the sun.Then naked and white, all their bags left behind,They rise upon clouds and sport in the wind;And the angel told Tom, if he'd be a good boy,He'd have God for his father, and never want joy.And so Tom awoke; and we rose in the dark,And got with our bags and our brushes to work.Though the morning was cold, Tom was happy and warm;So if all do their duty they need not fear harm.Part Two Robert Burns (1759-1796)I. Introduction to Robert BurnsBurns was born at Alloway near Ayr on 25th January 1759, the eldest of the family. In 1757 he married Agnes Brown.His earliest years were spent in the "auld cley biggin". In 1765 the family moved to Mount Oliphant, a 70-acre farm two miles away. It was here, in the autumn of 1774, that Burns wrote his first song Handsome Nell as a tribute to the girl with whom he was partnered at harvest-time. With the exception of the Tragic Fragment(in blank verse), all of Burns's early compositions were lyrics set to well-known melodies of the period, and song writing was to be his principal metier till the end of his life.At Whitsun 1777 the Burnes family moved to Lochlie, a hill farm of 130 acres in Tarboltonparish. Three years later Burns took a leading part in founding the Tarbolton Bachelors' Club,a convivial debating society widely regarded as the prototype for the many Burns clubs now flourishing world-wide. In 1780 he was inducted into the local masonic lodge; freemasonry was to be a major influence on his life, and helped launch his literary career.William Burnes died in February 1784, broken by prolonged litigation over the lease of Lochlie. The following month Robert and Gilbert decided to alter the spelling of their surname, and about that time took the lease of Mossgiel farm near Mauchline. The death of William Burnes had a liberating influence on Robert; 1784 was his annus mirabilis and a great deal of the poetry which would appear in his first edition was composed in this brief period.He was liberated in other ways also, with unfortunate results. In 1785 Elizabeth Paton, a farm-servant, gave birth to a daughter. Characteristically Burns celebrated the event in verses. An affair with Iean Armour, a master-mason's daughter, had inevitable results. Hounded by the girl's father, Burns had a brief affair with a byre woman at Coilsfield, which ended tragically with her death from typhoid fever which may have been exacerbated by pregnancy.Deciding to emigrate to Jamaica, Burns cast about for some way of raising the GBP 20.00 to pay his fare, and decided to publish his poems. Poems, Chiefly in the Scottish Dialect appeared at Kilmarnock in July 1786 in a modest edition of 612 copies at three shillings, and netted the poet about GBP 54.00. Encouraged by favourable acclaim from the Revd Dr Thomas Blacklock, one of the Edinburgh literati, Burns abandoned his plans to emigrate. In November he set out for Edinburgh in the hope of securing a second and much larger edition. Published in April 1787, this yielded about GBP 1100, part of which Burns used to pay his brother's debts and part to take the lease of Ellisland farm in Nithsdale, which he occupied 1788-91.At the same time, he sought a career offering a regular income and in 1789 entered the Excise service. In 1791 he abandoned farming and settled in Dumfries where he died in July 1796.Burns's reputation as a poet rests largely on the Kilmarnock Edition of 1786 although his great comic masterpiece Tam o' Shanter was written in 1790. From 1787 onwards, however, Burns tended to concentrate on songs, collecting and mending the ancient ballads of Scotland, writing new verses in many cases. His importance as a folklorist and song-collector has only really been appreciated in relatively recent years, thanks to the scholarship of Professor Low and others. Many of Burns's songs were sanitised revisions of traditional bawdry, but he made a collection of the originals and composed quite a few bawdy ballads of his own; this manuscript collection was published anonymously after his death under the title of The Merry Muses of Caledonia but it is only since 1968 that Burns's own contribution has been segregated and added to the canon.As a poet, he was extremely versatile, handling many different metres and verse forms with consummate skill, equally at home in the verse epistle and the epigram, the sonnet and the longer satirical work. In contrast with his nature poems are the ballads savaging the hypocrisies of the Kirk and the radical songs of the 1790s. Few were published in his lifetime, but th ey would become the medium for extending his reputation world-wide, especially in the present century.In addition to the 650-odd poems and songs, Burns was a voluminous letter-writer. The range of subject and treatment is wide, from the social letters to the polemics, sometimes mannered butalways written with vigour, studded with colourful metaphors and containing numerous quotations and literary allusions that reveal the scope and extent of his voracious reading. Burns also had ambitions to write for the stage, but his early death left his ambition unresolved, and his only work of dramatic merit is The Jolly Beggars, a Cantata of Love and Liberty.The myths of drunkenness and dissipation which grew up in the years following his death were grossly exaggerated. For the record, Burns had two sets of twins by Iean Armour before he acknowledged her formally as his wife, and five other children, the last being born on the day of the poet's funeral. Four other children were born out of wedlock.In his lifetime editions of his poetry were published in Ireland and the USA and his work circulated widely in Europe, with translations into French and German from the 1820s, which had immense influence on the Romantic poets and composers. Two centuries after the Ki lmarnock Edition, over 2000 editions of Burns have been published, with translations into 50 languages. Today Burns is ranked among the leading world poets of all time.II. Select ReadingAuld Lang SyneShould auld acquaintance be forgotAnd never brought to mind?Should auld acquaintance be forgot,And auld lang syne?ChorusFor auld lang syne, my jo,For auld lang syne,We'll tak a cup o' kindness yet,For auld lang syne.And surely ye'll be your pint-stoup,And surely I'll be mine;And we'll tak' a cup o' kindness yet,For auld lang syne.For auld, etc.We twa hae run about the braes,And pou'd the gowans fine;But we've wander'd mony a weary fit,Sin' auld lang syne.For auld, etc.We twa hae paidl'd in the burn,Frae morning sun till dine;But seas between us braid hae roar'd. Sin' auld lang syne.For auld, etc.And there's a hand, my trusty fiere!And gie's a hand o' thine!And we'll tak' a right gud-wellie waught, For auld lang syne.For auld, etc.A Red, Red RoseO my luve's like a red, red roseThat's newly sprung in June;O mu luve's like the melodieThat's sweetly play'd in tune.As fair art thou, my bonie lass,So deep in luve am I;And I will luve thee still, my dear,Till a' the seas gang dry.Till a' the seas gang dry, my dear,And the rocks melt wi' the sun;O I will luve thee still, my dearWhile the sands o' life shall run.And fare-thee-weel, my only Luve!And fare-thee-weel awhile!And I will come again, my luve,Tho' 'twere ten thousand miles.O my luve's like a red, red rose,That's newly sprung in June;O my luve's like the melodieThat's sweetly play'd in tune.Part Three George Gordon Byron (1788-1824)I. Introduction to ByronByron was born on 22 January 1788, in London. His parents, Catherine Gordon Byron (of the old and violent line of Scottish Gordons) and John Byron, had been hiding in France from their creditors, but Catherine wanted their child born in England, so he was. John stayed in France, living in his sister's house, and died in 1791, possibly a suicide. Catherine took her son to Scotland, where a deformity of his foot soon became evident. Special boots were made and treatments devised, but Byron limped all of his life. He lived through his reading, being especially fond of Roman history, and dreamed of leading regiments of brave soldiers.When the Wicked Lord died, Byron became, at the tender age of ten, t he sixth Lord Byron. Newstead, the ancestral home in England, was an absolute wreck, so Byron's mother moved them to nearby Nottingham. They were very poor. The Byron estate was mostly tied up in lawsuits, but Mrs. Byron finally got her son a decent income. He was sent to Dr. Glennie's Academy at Dulwich and then to Harrow, where he was mercilessly taunted by the other boys. He went back to Newstead for his Christmas holidays and fell in love with a neighbor (and cousin) named Mary Ann Chaworth. So infatuated was he that he refused to return to Harrow after the holidays ended, and it took a huge fight with Lord Ruthyn to finally get him to go back.After his love Mary Ann married another in 1805, Byron became a very wild sort of person. He enrolled in Cambridge, but did no work, since that was the fashion of the time. He wrote lots of verses, and spent lots of money. He inevitably spent beyond his income of £500 a year and had to get a relative's signature to obtain a loan, as he was still only seventeen. He turned to his half-sister, Augusta Byron Leigh, child of Mad Jack's first marriage. Augusta's husband was a big spender too, so she understood and signed.While staying at his mother's, a neighbor of Mrs. Byron's encouraged Byron to publish his poems. In 1806, the book Fugitive Pieces appeared. Byron sent copies to two of his friends, one of whom wrote back to say that he thought the poem “To Mary” was far too shocking to be read by the general public. Byron took this opinion very seriously, and ordered every co py of the volume burnt. The book was republished in March 1806 as Hours of Idleness. It sold well, but reviews were mixed, and Byron answered his detractors with the very successful satire “English Bards and Scotch Reviewers”.In June 1809, Byron and his friends John Cam Hobhouse and William Fletcher set off on aEuropean tour, which ended up as a tour of the Middle East. They eventually found themselves in Albania, where Byron was well received by Ali, a ruler renowned for his cruelty. Byron admired him for having the power and courage to stand outside normal society. It was around this time that Byron began work on Childe Harold's Pilgrimage, which he would work on off and on for the next eight years. In Greece, he amused himself by swimming the Hellespont, as in Hero and Leander, a distance of somewhere around three miles.Eventually, he returned to England, but England turned out to be a very sad place for him. His mother died of a stroke before he was able to see her again; one of his best friends dro wned; and his sister Augusta's marriage was almost completely wrecked. He wrote no poetry for a long time. But, at the insistence of a friend, the first two Cantos of Childe Harold were published in February 1812, and Byron became an overnight sensation. Women everywhere were throwing themselves at him, in some cases almost literally. Lady Caroline Lamb was the most noted and determined of these women. Byron got tired of her very soon after their affair started, and in fact, soon expressed a desire to marry Caroline's cousin, Annabella Milbanke. She turned him down and Byron consoled himself with a quick affair with Lady Oxford.In 1813, Augusta came to visit her brother as a way of escaping her financial and personal problems, there's little doubt that she and Byron had an affair at this time. In 1814, though, Byron was right back proposing to Annabella, and this time she gave in. They were married on 2 January 1815. On 10 December 1815, Annabella gave birth to a girl, named Augusta Ada. In February 1816, Annabella asked for a formal separation, which Byron, somewhat in shock, agreed to. London society, doubtful before, made up its mind and Byron was thoroughly snubbed everywhere he went. So in April, Hobhouse, Fletcher, and Byron set out for Europe once ag ain, this time with Dr. John Polidori also along. In May, the group met Percy Shelley and Mary Godwin (later Shelley), who were shocking everyone by living in sin. They were travelling with Mary's stepsister, Clare Clairmont, who immediately threw herself at the bored and embarrassed Byron.Shelley and Byron hit it off extremely well. They travelled everywhere together, finally ending up in Italy, and Byron decided that this was the place for him. While there, he finished up Childe Harold, wrote Manfred, and started on Don Juan, though his health was poor.Byron took Teresa, Countess Guicioli, as his mistress in 1819, and it was quite the scandal. Not just because the lady was married - Italian women were expected to have lovers - but because Byron often lived under the same roof with both Teresa and her rich old husband. He got involved with local politics in 1820, joining the Italian freedom fighters working for democracy, though nothing really effective ever came of his plans. In 1822, Shelley drowned when his boat capsized, and the little group of English expatriates came apart. The following year, Byron became involved in the Greek fight for independence from Turkey. (Ironically, Ali Pasha, whom Byron had so admired, had been one of the Turkish oppressors of Greece.) Byron sailed for Greece at great risk and expense, even though he was convinced he was sailing towards his own death. He joined forces with a Greek prince named Mavrocordato and financed a navy for the freedom fighters. Byron found himself reluctantly in command of everything, as the Greeks tended to fight amongst themselves too much.In February of 1824, he had an epileptic seizure. Two months later, he was caught in a sudden storm while horseback riding, and he caught a chill from which h e never recovered. He died on 19 April 1824, having suffered extreme delirium for many days. He was never able to read the letters of praise, which had arrived from England a few days before, so he never knew that his native country had forgiven (or at least forgotten) his indiscretions.II. Selected ReadingShe Walks in BeautySHE walks in beauty, like the nightOf cloudless climes and starry skies;And all that 's best of dark and brightMeet in her aspect and her eyes:Thus mellow'd to that tender lightWhich heaven to gaudy day denies.One shade the more, one ray the less,Had half impair'd the nameless graceWhich waves in every raven tress,Or softly lightens o'er her face;Where thoughts serenely sweet expressHow pure, how dear their dwelling-place.And on that cheek, and o'er that brow,So soft, so calm, yet eloquent,The smiles that win, the tints that glow,But tell of days in goodness spent,A mind at peace with all below,A heart whose love is innocent!When A Man Hath No Freedom to Fight for at HomeWhen a man hath no freedom to fight for at homeLet him combat for that of his neighbors;Let him think of the glories of Greece and of Rome,And get knocked on his head for his labors.To do good to mankind is the chivalrous plan,And is always as nobly requited;Then battle for freedom wherever you can,And, if not shot or hanged, you’ll get knighted.Part Four Percy Bysshe Shelley (1792-1822)I. Introduction to ShelleyShelley was an English romantic poet, who rebelled against English politics and conservative values. Shelley was considered with his friend Lord Byron a pariah for his life style. He drew no essential distinction between poetry and politics, and his work reflected the radical ideas and revolutionary optimism of the era. Like many poets of his day, Shelley employed mythological themes and figures from Greek poetry that gave an exalted tone for his visions.Percy Bysshe Shelley was the heir of a rich estate acquired by his grandfather. He was born at Field Place, near Horsham in Sussex, into an aristocratic family. His father, Timothy Shelley, was a Sussex squire and a member of Parliament. Shelley attended Syon House Academy and Eton and in 1810 he entered the Oxford University College.In 1811 Shelley was expelled from the college for publishing The Necessity of Atheism, which he wrote with Thomas Jefferson Hogg. They both refused to answer any questions about the pamphlet, which had been sent to the heads of the colleges and a number of bishops. Shelley's father renounced his inheritance in favor of a small annuity, after he had eloped with the 16-year old Harriet Westbrook, the daughter of a London tavern owner. The pair spent the following two years traveling in England and Ireland, distributing pamphlets and speaking against political injustice. Shelley tried to set up a small community of free spirits At Lynmouth in Devon. He moved to Wales after finding out that he was watched by Home Office spies, because of his radical activities and writings. While living at Tanyrallt in Carnarvonshire he was attacked by a shepherd who fired three shots at him. Shelley continued his nomadic living and published in 1813 his first important poem, the visionary Queen Mab, which later became known as the "Chartist's Bible". In its prose notes Shelley dealt with such subjects as free love, atheism, Christianity, and vegetarianism. In his essay 'A Vindication of Natural Diet' (1813), Shelley mentioned that he has been a vegetarian for a period. At least George Bernard Shaw and Gandhi knew Shelley's defence of vegetarianism.The poet's first marriage turned to be failure. In 1814 Shelley traveled abroad with MaryWollstonecraft Godwin, the daughter of the philosopher and anarchist William Godwin (1756-1836). Also Mary's young stepsister Jane (Claire) Clairmont was in the company. During this journey Shelley wrote an unfinished novella, The Assasins (1814). The combined journal, Six Weeks’ Tour, reworked by Mary Shelley, appeared in 1817. After their return to London, Shelley came into an annual income under his grandfather's will. Harriet drowned herself in the Serpentine in 1816. Shelley married Mary Wollstonecraft and his favorite son William was born in 1816 - William died a few years later in Rome.The summer of 1816 Shelley spent with Lord Byron at Lake Geneva, where Byron had an affair with Clairmont. Shelley composed “H ymn to Intellectual Beauty” and “M ont Blanc”. Mary Wollstonecraft started her famous novel Frankenstein. In 1817 Shelley published his political pamphlet The Revolt of Islam, a poem, where the principal characters, originally brother and sister, become lovers. Cynthna, a maiden, joins forces with revolutionary Laon. They are burned alive as a sacrifice to the famine and pestilence which follows the people's revolt. In the poem 'Ozymandias' (1818) Shelley commented the fleeting nature of fame and power. Ozymandias is the Greek name for Ramses II of Egypt. His ruined statue is in the desert. On the pedestal is written: "Look on my works, ye Mighty, and despair!" but there is nothing to see but sand.The Shelleys and Clairmount moved in 1818 to Italy, where Byron was residing. In 1819 they went to Rome and in 1820 to Pisa. Shelley's works from this period include Julian and Maddalo, an exploration of his relations with Byron, Prometheus Unbound, a lyrical drama drawn from Aeschylus' Prometheus Bound. "Peace is in the grave. / The grave hides all things beautiful and good: / I am a God and cannot find it there." This deeply personal work about Titan Prometheus who brings fire to humanity is often considered Shelley's greatest lyrical drama. The Cenci was a five-act tragedy based on the history of a 16th-century Roman family, and The Mask of Anarchy was a political protest which was written after the Peterloo massacre. "One by one, and two by two / He tossed them human hearts to chew."In 1822 the Shelley household, which now included Jane and Edward Williams, moved to the Bay of Lerici. There Shelley began to write The Triumph of Life. To welcome his friend Leigh Hunt, he sailed to Leghorn. As much as he was near and on the water Shelley never learned to swim or navigate. He also forecasted many times his death by drowning. During the stormy return voyage to Lerici, his small schooner the Ariel sank and Shelley drowned with Edward Williams on July 8, 1822. The fish-eaten bodies were washed ashore at Viareggio, where, in the presence of Lord Byron and Leigh Hunt, they were burned on the beach - his heart was given to his wife, who carried it with her in a silken shroud everywhere she went for the rest of her life. Shelley was later buried in Rome. There is a rumor that an old Italian seaman confessed on his deathbed that he ha d been a crewmember on a boat that collided intentionally with Shelley's ship in order to steal money hidden on board.II. Select ReadingOde to the West Wind。
Lesson-Six
• level / ˈlevl/ n 水平线; 水平面; (尤指)水平高度: • 1000 metres above sea-level 海拔1000米 • The controls are at eye-level. 控制仪表盘为视平高度. • (测量的)数量, 强度, 数值等: the level of alcohol in the
blood 血液中酒精的含量 • (官阶﹑ 等级﹑ 权威等的)级别, 水平: • high-/low-level negotiations 高级别[低级别]的谈判. • 水准器 • rough finder 粗瞄准星 • face-left 盘左的 • face right 盘右
Lesson Six Horizontal Angle Measurement
Lesson Six Horizontal Angle Measurement
• The tripod is desirably placed in solid ground where the instrument will not settle much.
• 要求把三脚架放在仪器不会大量下沉的坚实的地 面上。
parties. 委员会由所有三个政党的成员组成. • target/ ˈtɑːgit/ n 目标; 靶; 目的; • Production so far this year is on/off target. 今年到目前为
止生产已达到[未达到]指标. • The embassy is an obvious target for terrorist attacks. 大
关系, 我们要取消此次郊游. • on view陈列着; 展览着: • Our entire range of cars is now on view at your local
2012剑桥一级下册Unit Six 基本句型
Unit Six基本句型:How happy I am! 我真高兴!I’ve got a name. 我有名字了。
Which is my name? 哪一个是我的名字?Just a minute. 等一会。
It’s ready.马上就好。
We sound the same. 我们听起来一样啊。
Can we be friends? 我们能成为朋友吗?This way, please. 请这边走。
Meet your new friend. 见一见你的新朋友。
重点朗读词汇:same相同的boat, bike, car, bad糟糕desk, family家庭game, way 路wait等待sound听起来meet重点记忆词汇:boat, bike, car, desk, family, game, wait,Unit Six基本句型:How happy I am! 我真高兴!I’ve got a name. 我有名字了。
Which is my name? 哪一个是我的名字?Just a minute. 等一会。
It’s ready.马上就好。
We sound the same. 我们听起来一样啊。
Can we be friends? 我们能成为朋友吗?This way, please. 请这边走。
Meet your new friend. 见一见你的新朋友。
重点朗读词汇:same相同的boat, bike, car, bad糟糕desk, family家庭game, way 路wait等待sound听起来meet重点记忆词汇:boat, bike, car, desk, family, game, wait,Unit Six基本句型:How happy I am! 我真高兴!I’ve got a name. 我有名字了。
Which is my name? 哪一个是我的名字?Just a minute. 等一会。
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玻璃化温度(Tg):由高弹态向玻璃态转变的温度。 7.2.2 高分子化合物的结构与性能的关系
尼龙-66
CH3 CH2 CH n COOCH3
有机玻璃
(聚甲基丙烯酸酯)
此外为解决聚合物名称亢长,读写不便,常见的一些聚 合物采用国际通用的英文缩写符号(见表7.1)。
2.高分子化合物的分类
按来源分类:天然高分子; 合成高分子; 按主链结构分类: 1) 碳链聚合物 主链完全由碳原子组成。
CH2 CH2 n
n CH2 CH Cl CH2 CH n Cl
均聚物 由一种单体聚合而成,其分子链中只包含一 种单体构成的链节的聚合物。如聚乙烯、聚氯乙烯、 聚苯乙烯、聚异戊二烯.合成该种聚合物的反应称为 均聚反应。 共聚物 由两种或两种以上单体同时进行聚合而成的 聚合物。生成的聚合物含有多种单体构成的链节。 如丙烯腈(acrylonitrile)、丁二烯(butadiene)、 苯乙烯(styrene)三种单体共聚得到的ABS工程塑 料。合成该种聚合物的反应称为共聚反应。 ny
链的柔顺性主要受大分子链的侧基空间位阻和链间分 子作用力的影响 侧基越大,链段运动受阻力越大,柔顺性越低,Tg值 越高 大分子链中含极性基团或形成氢键,大分子链间吸 引力增加,易“冻结”,Tg值升高 聚合物结晶度提高也会导致Tg值升高 Tf值越低对加工越有利,但Tf较低的高聚物的耐热性 往往不理想。 体型高聚物的分子链由于被化学键牢固地交联,很难 变形,因此当温度改变时不会出现粘流态,交联程度 大时甚至不会出现高弹态,而只呈玻璃态。
CH2
CH n Cl
C
O n
聚乙烯
聚氯乙烯
聚对苯二甲酸乙二醇酯
II.由两种单体缩聚而成的聚合物,在单体名称(或简 单地自单体名称中取一两个字作简称)后面加”树
脂”。
OH CH2 * * CH2 OH CH2 * n *
酚醛树脂 2)按NH CH2 6 NH n
●链节:组成高分子链的重复单元。
●聚合度:高分子链所含链节的数目。
●高分子化合物的相对分子量=聚合度×链节式量。
高分子化合物实际上是由许多相对分子质量大小不同 的分子(聚合度不同)组成的混合物。高分子化合物 的相对分子量是相对平均分子质量,聚合度也是平均 聚合度。 ●高分子的多分散性 :高分子化合物中相对分子质 量大小不等的现象 .高分子化合物的分散性越大, 一般来讲其性能越差。
晶态高聚物溶解比非晶态高聚物要困难。一般要加 热至熔点附近,待晶态转变成非晶态后,溶剂分子 才能渗入,使高聚物逐渐溶解。 高聚物的相对分子量与其溶解性也有关,相对分子 量大的高聚物,链间作用力大,不利于其溶解。 在有机高分子材料中,溶剂的选择可根据相似相溶 原则。 有一些高聚物,分子内含有羟基等强亲水性基团。 这些高聚物不溶于水,在水中只能溶胀,有惊人的 吸水能力,吸水后成为凝胶状,在加压后水分也不 易被挤出,这些高聚物称为高吸水性树脂。 5.化学稳定性和老化
2)虽无极性基团,但链节结构不对称的高聚物,如 聚苯乙烯、天然橡胶等;可用作中频电绝缘材料。
3)链节结构不对称且有极性基团的高聚物如聚氯乙 烯、聚酰胺、酚醛树脂等,链节结构不对称且有极 性基团的高聚物如聚氯乙烯、聚酰胺、酚醛树脂等, 可用作低频或中频电绝缘材料. 高聚物的静电现象极普遍,一旦戴上静电,消除很慢 聚合物静电的利用:静电印刷;油漆的喷涂;静电分 离; 静电的危害:腈纶纤维起毛球、吸灰尘;粉料在干燥 运转中会结块;静电在某些场合会引起火灾、爆炸等。
化学稳定性: 物质对水、酸、碱、氧气等化学因素 的作用所表现出的稳定性。
高聚物有较好的化学稳定性 不同的高聚物的化学稳定性有差异 ,一些含
O C H N
O C O
-CN 等基团的高聚物
不耐水,在酸或碱的催化下会与水反应 。尤其当这些 基团在主链中时,对材料的性能影响更大。 老化: 高聚物及其材料在加工、贮存和使用过程 中,长期受化学、物理(光、电、热、机械)以及 生物(霉菌)因素的综合影响,发生裂解或交联, 导致性能变坏的现象。
1.弹性和塑性
当高聚物的玻璃化温度Tg低于室温,而粘流化温度Tf 高于室温时,该高聚物处于高弹态,用作材料是具 有弹性。Tg越低、Tf越高,则橡胶的耐寒性和耐热性 越好,性能优良。 当高聚物的玻璃化温度Tg高于室温,该高聚物处于玻 璃态,可作塑料。 高弹态是非晶态线型高聚物的特征物理状态,
分子的柔顺性越大,Tg越低。
线型高分子:
有独立的大分子存在,分子 链在无外力情况下会有众多 的分子空间形态,绝大部分 为卷曲状,呈伸直状得极少。 高分子链这种强烈卷曲的 倾向称为链的柔顺性
体型高分子:没有独立的大分子存在,因而没有柔 顺性和相对分子质量的概念,只有交联度的概念。
2.高聚物的聚集态
从结晶情况来看,线型结构的高聚物分为结晶高 聚物和非结晶高聚物。 结晶高聚物:分子链作有规则的排列,分子间的 作用力较大,耐热性和机械强度都要比非结晶态 高聚物高,有一定的熔点。 非结晶套高聚物:没有一定的熔点,耐热性和机 械强度要比晶态高聚物要差。 所谓结晶态高聚物实际也只有部分结晶,高聚物 的结晶区域成为结晶区,非结晶区域呈非结晶区, 结晶的多少成为结晶度。
nx CH2 CH CN CH2=CH CH =CH2 nz CH2=CH
CH2
CH CN
x
CH2
CH
CH
CH2
y
CH2 CH
z
n
共聚物往往可兼具两种以上均聚物的一些优异性质, 通过共聚可以改善产品的性能。 加聚反应的特点: 1)单体均是带双键或叁键的不饱和化合物:如乙 烯、苯乙烯、丙烯腈、甲基丙烯酸甲酯、异戊二烯 等。与不饱和化合物的加成反应一样,加聚反应发 生在不饱和键上。 2)绝大多数反应是不可逆反应。 3)增加反应时间,相对分子质量不会增大,但可增 加单体转化率。(活性聚合例外) 2.缩聚反应 由一种单体或多种单体相互缩合生成 高聚物,同时又低分子物质(水、卤化氢、氨、醇 等)析出的反应。
2. 机械性能 高聚物的机械性能的指标主要有:机械强度、刚性 和衡量韧性的冲击强度 。大小主要与分子链之间的 作用力的大小等因素有关。 高聚物的平均相对分子质量的增大有利于增加分子 链之间的作用力,使拉伸强度与冲击强度等有所提 高。 高聚物分子链之间含有极性取代基或链间能形成氢键 时,都可因增加分子链之间的作用力而提高强度。 适度交联有利于增加分子链之间的作用力。但过分交 联往往不利。 主链含苯环的高聚物的强度和刚性高于含脂肪族主链 的高聚物。
4)从物理性质上来看,高分子化合物在常温下主要 以固态或液态存在,几乎无挥发性,溶解性也很差, 有时只发生溶胀。
7.1.2 高分子化合物的命名和分类
1.高分子化合物的命名 通用命名法: 1)按原料单体或聚合物的结构特征命名 I.在单体名称前面冠以“聚” O 字
CH2 CH2 n
O C O CH2 CH2
素或基团构成
Cl P Cl N
按性能和用途分类:塑料; 纤维; 橡胶;[三 大类] (涂料; 粘合剂; 功能高分子;) [六大类] 按功能分类: 通用高分子; 工程材料高分子; 功能 高分子; 仿生高分子等。
7.2 高分子化合物的基本结构和重要性质
1.高聚物分子的几何形状
7.2.1 高分子化合物的基本结构
聚合物静电的消除:使用抗静电剂。 抗静电剂一般是一些表面活性剂,主要作用是提高聚 合物表面的电导性。 4.溶解性与保水性 高聚物的溶解需经历两个阶段: 1)溶胀 溶剂分子渗入高聚物内部,使该分子链产生 松动通过溶剂化使高聚物膨胀成凝胶状. 2)溶解 高分子链从凝胶表面分散进入溶剂中,溶解形 成均一的溶液. 一般线型(包括带支链)的高聚物,在适当的溶剂中常 可溶解; 体型高聚物由于链间形成化学键而增加了作用,通常只 发生溶胀。
裂解: 又称降解,它使高聚物的聚合度降低,以致 变软、发粘,丧失机械强度。如天然橡胶易发生氧化 而降解。老化通常以降解为主。有时也伴有交联。 交联可是链型高聚物变为体型结构,增大了聚合度, 从而使之丧失弹性,变硬发脆。如丁苯橡胶等合成橡 胶的老化以交联为主。 老化的外界因素中,以氧、热、光最为重要。通常由 易发生氧化而降解的情况为主,且往往是在光、热等 因素影响和促进下发生的。 高聚物分子链中引入较多的芳环、杂环结构或在主链 或支链中引入无机元素(如硅、磷、铝等)均可提高 热稳定性。 为延缓光、氧、热对高聚物的老化作用,通常可在高 聚物中加入各类光稳定剂、抗氧剂(芳香胺类)、热 稳定剂(如硬脂酸盐)。
高分子化合物与材料
内容提要:
●高分子化合物概述 ●高分子化合物的基本结构和重要特性 ●高分子化合物的合成、改性与再利用 ●日常生活中的高分子材料
要求: 1.了解高聚物的基本概念、命名和分类; 2.了解高聚物的基本结构与重要特性(如弹性、 塑性、机械性能、电绝缘性及抗静电性、溶 解性与保水性、化学稳定性与老化即其分子 结构的关系) 3.了解高分子化合物的合成反应及改性、回 收再用的方法; 4.了解几种重要的高分子材料(如塑料、橡 胶、纤维及感光性高分子)和复合材料的 性能及其应用;
3.电绝缘性和抗静电性 高聚物通常是很好的绝缘体,可作绝缘材料。高聚 物的绝缘性能与其分子的极性有关。 分子链节结构对称的高聚物称非极性高聚物;如聚 乙烯、聚四氟乙烯等; 分子链节结构不对称的高聚物称极性高聚物;如聚 氯乙烯、聚酰胺等; 按分子链节结构与电绝缘性能的不同,可将作为电 绝缘材料的高聚物分为: 1)链节结构对称且无极性基团的高聚物如聚乙烯、 聚四氟乙烯,对直流电和交流电都绝缘,可用作高 频电绝缘材料。
2)杂链聚合物 主链除碳原子外还含有氧、氮、硫 即金属原子等杂原子。