9. invent
1. invent (v.)发明Who invented the telephone?
2.invention (n.)发明The telephone is a wonderful invention.
Do you know the four great inventions inChinesehistory?
2.用作介词：
象...一样He is as old as me.
作为As a writer, she’s wonderful
8. near
1. near (adj.) the near future
(adv.)We live near school.
2. nearly = almost (adv.)几乎，差不多
The train was nearly full.
He is nearly 16. it’s his birthday next week.
3.nearby (adj.)附近的We went to a nearby town.
(adv.)在附近Afootball match being played nearby.
calculating machines计算机
12. accurate
1. accurate (adj.)精确的，准确的
He gave an accurate description of the thief.
2.（反义词）不精确的，不准确的：__________________________
3.（副词）精确地：__________________________
by the way顺便问一下
in the way挡道
lose one’s way迷路
7. as
1.用作连词：
如同…as these pictures show.
按照Do asIsay!
当....的时候Isaw her as she was getting off the bus.
因为，由于As she has no car, she can’t get there easily.
3. own
1. own = have/possess (v.)拥有
他拥有一辆新车：_______________________________________________
2. owner (n.)拥有者
他是那辆车的拥有者：___________________________________________
八年级上Unit 4 Numbers
一.课前回顾
( ) 1. divide
A. alive; not dead
( ) 2. especially
B. very; more than usual
( ) 3. brain
C. find out how many times one number goes into a bigger number
二、本节内容
【词汇拓展】
1. especially
1. especially = particularly (adv.)特别地，尤其，格外
2. specially = in purpose (adv.)特意地
我特意为你准备了一个蛋糕：_____________________________________
开发Develop the natural resources of a country.
2.development(n.)发展，成长，进展
developer(n.)开发者
3. developing (adj.)发展中的India is a developing country.
developed(adj.)发达的The USA is a developed country.
3.inventor (n.)发明家Can you tell some great inventors in the world?
10. develop
1. develop (v.)发展Some children develop more slowly than others.
Our country is developing very quickly.
( ) 10. abacus
J. one of the pieces of something
( ) 11. whole
K. find the answer by using mathematics
( ) 12. against
L. a sudden bright light in the sky when there is a storm
from time to time = 时常
4. at the same time同时
for the time being暂时，眼下
6. way
1.方式，方法：
in many different ways用不同的方式
in the same way用同样的方式
2.路线，路途：
on one’s way to在去哪里的路上
14, 615 fourteen thousand six hundred and fifteen
123, 456, 789
one hundred and twenty-three four hundred and fifty-six thousand seven hundred and eighty-nine
【数词的用法】
基数词
（一）基本概念：表示数目多少的词叫基数词。
1. 1-12独立成词：one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve
2. 13-19 (+teen)：thirteen, fourteen,fifteen, sixteen, seventeen, eighteen, nineteen
3. 20-90 (整十位数+ty)：twenty, thirty,forty, fifty, sixty, seventy, eighty, ninety
4. 21-99间的两位数，先说“十位”，再说“个位”，中间要加连字符“-”
5. 101-999之间的三位数，先说“百位”，再加and，再加末尾两位数。
6. 1000以上数，使用计数符号，每三位加以逗号，从第一个逗号起单位依次为thousand, million, billion.“万”表达为ten thousand
例：579 five hundred and seventy-nine
802 eight hundred and two
4, 352 four thousand three hundred and fifty-two
3.区别especial和special：
especial强调“特别，尤其”；
special强调“特殊的，专为....准备的”
2. least
1.比较级变形过程：little --- less --- least
至少：____________________
2.（反义词组）至多：____________________
13. electronic
1.辨析：electronic electricelectrical
electronic电子的，电子器件的
electric电的，发电的，电动的，（任何直接用电，或产生电的）
electrical与电有关的，用电的，电气的an electrical engineer
2. electricity (n.)电
2. powerful (adj.)有力量的，有权利的
The car has a very powerful engine.
The president is very powerful.
15. live
1. live (v.)生存，过...生活live a happy life
(adj.)实况转播It isn’t a record show.It is live.
( ) 4. calculate
D. of or like people, not animals or machines
( ) 5. part
E. all
( ) 6. human
F. on the other side in a game, fight, etc.
( ) 7. living
G. an ancient calculating machine in China
living (adj.)活着的the living things ( living room客厅)
alive (adj.)有生命的，活着的，充满生气的
Although he is old, he is still very much alive.
lively (adj.)活泼的a lively song/mind
5. time
1. times = age (n.)年代
在古代：______________________________
表示倍数或次数
三倍：____________________四倍：____________________
2. in time及时
on time准时
3. all the time = always总是
3. It’s his own responsibility.
Ionly borrowed the book, it’s not my own.
Ican’t carry it on my own, it’s too heavy.