小学生英语知识点汇总

小学生英语 知识点 高中化学知识点免费下载体育概论知识点下载名人传知识点免费下载线性代数知识点汇总下载高中化学知识点免费下载 汇总,必看! 第一部分:基础知识 1.字母:26个字母的大小写 ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz 2.语音:元音的发音 五个元音字母:AEIOU 12个单元音:前元音:[i:] [?] /e/ [?] 中元音:[?:] [?] 后元音:[ɑ:] [?] [?:] [u :] [?] [?] 双元音(8个)Ⅰ.合口双元音(5个)[ai] [ei] [au] [?u] [? i] Ⅱ.集中双元音(3个)[i?][ε?][u?] 第二部分:语法知识 一.名词:名词单复数,名词的 格式 pdf格式笔记格式下载页码格式下载公文格式下载简报格式下载 (一)名词单复数 1.一般情况,直接加-s,如:book-books, bag-bags, cat-cats, bed-beds 2.以s. x. sh. ch结尾,加-es,如:bus-buses, box-boxes, brush-brushes, watch-watches 3.以“辅音字母+y”结尾,变y为i, 再加-es,如:family-families, strawberry-strawberries 4.以“f或fe”结尾,变f或fe为v, 再加-es,如:knife-knives 5.不规则名词复数: man-men, woman-women, policeman-policemen, policewoman-policewomen,mouse-mice,child-children, foot-feet, tooth-teeth, fish-fish, people-people, Chinese-Chinese, Japanese-Japanese 不可数名词的复数就是原型:paper, juice, water, milk, rice, tea 1 (二)名词的格 (1) 有生命的东西的名词所有格: a) 单数后加’s 如: Lucy’s ruler my father’s shirt b) 以s 结尾的复数名词后加’如: his friends’bags c) 不以s 结尾的复数后加’s children’s shoes d)并列名词中,如果把’s加在最后一个名词后, 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 示共有, 如: Tom and Mike’s car 汤姆和迈克共有的小汽车 要表示所有物不是共有的,应分别在并列名词后加’s Tom’s and Mike’s cars 汤姆和麦克各自的小汽车 (2)表示无生命东西的名词通常用“of +名词”来表示所有关系:如: a picture of the classroom a map of China 二.冠词:不定冠词,定冠词种类: (1)不定冠词:a / an a unit / an uncle 元音开头的可数名词前用an : an egg / an apple / an orange / an eraser / an answer / an ID card / an alarm clock / an actor / an actress / an e-mail / an address / an event / an example / an opera / an houran old man / an interesting book / an exciting sport / an action movie / an art lesson / (2)定冠词:the the egg the plane 2. 用法: 定冠词的用法: (1)特指某(些)人或某(些)物:The ruler is on the desk. (2)复述上文提到的人或物:He has a sweater. The sweater is new. (3)谈话双方都知道的人或物:The boys aren’t at school. (4)在序数词前:John’s birthday is February the second. (5)用于固定词组中:in the morning / afternoon / evening 不用冠词的情况: (1)专有名词前:China is a big country. (2)名词前有定语:this , that , my , your , some, any , no 等: This is my baseball. (3)复数名词表示一类人和事:Monkeys can’t swim. They are teachers. (4)在节日,日期,月份,季节前:Today is Christmas Day. It’s Sunday. (5)一日三餐前:We have breakfast at 6:30. (6)球类棋类运动前: They often play football after class. He plays chess at home (7)学科名称前:My favorite subject is music. (8)在称呼或头衔的名词前:This is Mr Li. (9)固定词组中:at noon at night by bus 三、代词、形容词、副词 代词:人称代词,物主代词 第一人称单数I(我)me my(我的) 复数we(我们)us our(我们的) 第二人称单数you(你)you your(你的) 复数you(你们)you your(你们的) 第三人称单数he(他)him his(他的) she(她)her her(她的) it(它)it its(它的) 复数they(他们/她们/它们)them their(他们的/她们的/它们的) 形容词,副词:比较级,最高级 (一)、形容词的比较级 1、形容词比较级在句子中的运用:两个事物或人的比较用比较级,比较级后面一般带有单词than。比较级前面可以用more, a little来修饰表示程度。than后的人称代词用主格(口语中可用宾格)。 2.形容词加er的规则: ⑴一般在词尾加er ; ⑵以字母e 结尾,加r ; ⑶以一个元音字母和一个辅音字母结尾,应双写末尾的辅音字母,再加er ; ⑷以“辅音字母+y”结尾,先把y变i,再加er 。 3.不规则形容词比较级: good-better, beautiful-more beautiful (二)副词的比较级 1.形容词与副词的区别(有be用形,有形用be;有动用副,有副用动) ⑴在句子中形容词一般处于名词之前或be动词之后 ⑵副词在句子中最常见的是处于实义动词之后 2.副词比较级的变化规则基本与形容词比较级相同(不规则变化:well-better, far-farther) 四、数词:基数词、序数词 (1)1-20 one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen, 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,45→forty—five,56→fifty-six,67→sixty-seven, 78→seventy-eight,89→eighty-nine,91→ninety-one (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 1,001→one thousand and one 18,423→eighteen thousand,four hundred and twenty-three 6,260,309→six million two hundred and sixty thousand three hundred and nine 750,000,000,000→seven hundred and fifty billion 序数词 (1)一般在基数词后加th eg.four→fourth,thirteen→thirteenth (2)不规则变化 one→first,two→second,three→third,five→fifth,eight→eighth,nine→ninth, twelve—twelfth (3)以y结尾的十位整数,变y为ie再加th twenty→twentieth,forty→fortieth,ninety→ninetieth (4)从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词。 twenty-first,two hundred and forty-fifth 基数词转为序数词的口诀:基变序,有规律,词尾加上-th.