小学英语资料:小学英语1-6年级超全知识点整理
小学英语2020-04-02 10:16
2. 用法:
定冠词的用法:
特指某(些)人或某(些)物:The ruler is on the desk.
复述上文提到的人或物:He has a sweater. The sweater is new.
谈话双方都知道的人或物:The boys aren't at school.
在序数词前:John's birthday is February the second.
用于固定词组中:in the morning / afternoon / evening
不用冠词的情况:
专有名词前:China is a big country.
名词前有定语:this , that , my , your , some, any , no 等:
This is my baseball.
复数名词表示一类人和事:Monkeys can't swim. They are teachers.
在节日,日期,月份,季节前:Today is Christmas Day. It's Sunday.
一日三餐前:We have breakfast at 6:30.
球类 棋类运动前:They often play football after class. He plays chess at home.
* 但乐器前要用定冠词:I play the guitar very well.
学科名称前:My favorite subject is music.
在称呼或头衔的名词前:This is Mr Li.
固定词组中:at noon at night by bus
代词、形容词、副词
代词:人称代词,物主代词
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:
一般在词尾加er ;
以字母e 结尾,加r ;
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 ;
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)
数词:序数词、基数词
(1) 1-20
one,two, three, our, 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) 1,000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 bilion
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