新教材七年级下册知识点梳理7BUnit One语法归纳

2021-11-05 14:42:08

新教材七年级下册知识点梳理7BUnit One语法归纳
语法归纳
(一)Cardinal numbers
A.基数词的写法:
⑴“几十几”十位和个位之间用“—”。e.g. 32 thirty-two
⑵101—999 百位和十位间加“and”.e.g. 928 nine hundred and twenty-eight
⑶1000 以上的数,从后往前每三位一段,倒数第一个数读 thousand,倒数第二个数读 million,依次类推。e.g. 8,542,601 eight million, five hundred and forty-three thousand, six hundred and one
B .基数词的运用:
1. hundred, thousand, million, billion 等前有数字修饰表示“精确数”一般用单数,但表示不定数目用复数:hundreds of; thousands of; millions of
注意区别:three hundred students;
hundreds of students;
three hundred of the students
2. 表示“几十”的数词,其复数形式可以表示年龄或年代。

e.g. in his twenties in the thirties the 1990s

快速英语记忆法
电脑背单词软件
九年级英语电子书

3. 表示房间号、公共汽车号、电话号码、页数、年龄等用基数词,如:
Room 801; No. 1 Bus; Page 44; two o’clock; a twelve-year-old girl
4. 一些计算或分数、百分数等,如:
Two plus two is four.
Five times six is thirty.
a half; a third; a quarter; three quarters; one-eighth; seven-eighths;
thirty percent
5. 年月日中,年用基数词;日用序数词
January 18, 2014; 18th January 2014
6. 基数词表
0 zero 10 ten 20 twenty 100
1 one 11 eleven 30 thirty one hundred
2 two 12 twelve 40 forty 1,000
3 three 13 thirteen 50 fifty one thousand
4 four 14 fourteen 60 sixty 10,000
5 five 15 fifteen 70 seventy ten thousand
6 six 16 sixteen 80 eighty 100,000
7 seven 17 seventeen 90 ninety one hundred thousand
8 eight 18 eighteen 1,000,000
9 nine 19 nineteen one million
(二)Ordinal numbers
序数词的运用:
1. 表示日期:e.g. 6 月 1 日 on the first of June/ on June (the) first
2. 表示编号:e.g. Lesson 5=the fifth lesson
3. 表示名次,起副词作用,前无“the” e.g. Simon came first in the English exam.
4. 序数词前有限定词修饰时,不加“the”. e.g. This is my first lesson.
5. 表示次序或楼层,如:
He is always the first to come to school in our class.
Wilson lives on the twelfth floor.
6. a/an+序数词 ,表示“又一、再一”;
I’d like a second try.
7. 序数词表
Ordinal numbers Ordinal numbers
1st=first 10th=tenth
2nd=second 11th=eleventh
3rd=third 12th=twelfth
4th=fourth 13th=thirteenth
5th=fifth 20th=twentieth
6th=sixth 21st=twenty-first
7th=seventh 22nd=twenty-second
8th=eighth 23rd=twenty-third
9th=ninth 30th=thirtieth

上一篇:

下一篇:

Copyright© 2015-2020 松原信息社版权所有