1.north的基本意思是“北,北方,北部”,通常用作单数名词或不可数名词。
2.north在表示方向时,其前不加定冠词,若表示方位,其前需加定冠词。
3.the North在美语中指华盛顿特区以北的东部地区。
4.“东南西北”在英语中的序是North,South,East,West。

The centre of the U.S. economy shifted from the agrarian areas to the industrial centres in the north.美国的经济重心由农村转到北方的工业中心。
A child born in the far north is soon conditioned to the long cold dark winters.出生在北部边远地区的孩子很快就习惯于那漫长、寒冷、阴暗的冬季。
The needle of a compass points to the north.罗盘的指针指向北方。
The US is bounded on the north by Canada and on the south by Mexico.美国北面与加拿大接壤,南面与墨西哥毗连。
He runs toward north.他向北跑。
The wind suddenly changed round from west to north, bringing with the threat of snow.风向突然由西转北,怕要下雪了。
The North defeated the South in 1865.北方在1865年打败了南方。
Mexico is in the South of North America.墨西哥在北美的南部。

in the north, on the north, to the north
这三个短语都译为“在…的北部”,其区别在于：in the north表示“在某区域的北部”; on the north表示“在接壤区的北面”; to the north表示“在不接壤区的北面”。例如:
Heilongjiang Province is in the north of China.
黑龙江省地处中国的北部。
Heilongjiang Province is on the north of Jilin Province.
黑龙江省地处吉林省的北面。
Heilongjiang Province is to the north of Henan Province.
黑龙江省地处河南省的北面。

他因公出差到北方去了。
［误］  He travelled to north for business.
［正］  He travelled to the north for business.
［析］  north作为方位名词,其前须加the。

1.north用作形容词时,意思是“北方的,北部的,来自北方的”,是定语形容词,在句中只用作定语。
2.north如所修饰的名词是地理名词,则其前不加冠词,如是普通名词,则其前加冠词。

用作定语
▲～+n.
Such fish are rarely met with in the north country.这种鱼在北方难得看到。
The Great Wall has great gateways which connect the main roads of north China.长城有许多关口,这些关口与华北的主要道路相连。
Has the North Pole been fully explored yet?北极已被全面勘探了吗?
The sea has eaten into the north shore.海水侵蚀了北岸。
With the coming of the night, the north wind was again released.夜幕降临,北风又刮起来了。
They fenced the seedbeds from the north wind.他们为苗床筑篱挡住北风。

north用作副词时意思是“向北方”,多修饰动态动词。

up north
去北部 to or in the north of the country
They've moved up north.他们已迁到北方去了。
Don't halt here.Move up north!不要停留在这里,往北走!
By the time he got there, his friends had already moved up north.当他到达那儿时,他的朋友已经去北部了。

用作状语
The car steered north.汽车朝北驶去。
You are heading north.你们在往北行进。
The train is going north.列车向北行驶。

［同义词］ adj.  northern
［反义词］ n., adj. & adv.  south
［词源］  ＜荷兰语noord(北方)