East 或 eastern; north 或 northern?
相信用过上述表示东、西、南、北方位英语词汇的人，一定产生过一些疑惑，究竟该用east，还是eas百思特网tern，north，还是northern?
North, south, east, west
north, south, east 和 west通常被用于指代“具体地点 或 运动的方向”，而northern, southern, eastern 和 western则不具备这一功能。
此时，north, south, east 和 west的词性为：形容词（adj）、副词（adv）或名词（n）。
例如：
- More and more people are buying second homes on the south coast of Ireland. (south为形容词，地点：海岸南部)
- We drove north for about six hours with百思特网out stopping. (north为副词)
- Heavy rain is forecast in the west of Beijing. (west为名词)
Northern, southern, eastern , western
Northern, southern, eastern 和 western 指代更大的区域 或 领土。且只能作为形容词（adj）使用。
例如：
- The northern parts of India have suffered severe flooding. （印度北部）
- Houses are more expensive in most western parts of China.（中国北部）
- San Diego is my favourite place in southern Californi百思特网a.（= in the south of California） (加州南部)
