终于明白east和eastern，north和northern的区别｜英语语法

East 或 eastern; north 或 northern?

信赖誉过上述表现东、西、南、北方位英语词汇的人，一定产生过一些疑惑，毕竟该用east，照旧eastern，north，照旧northern?

North, south, east, west

north, south, east 和 west通常被用于指代“具体地点 或 活动的偏向”，而northern, southern, eastern 和 western则不具有这一功效。

此时，north, south, east 和 west的词性为：形貌词（adj）、副词（adv）或名词（n）。

比如：

1. More and more people are buying second homes on the south coast of Ireland. (south为形貌词，地点：海岸南部)
2. We drove north for about six hours without stopping. (north为副词)
3. Heavy rain is forecast in the west of Beijing. (west为名词)

Northern, southern, eastern , western

Northern, southern, eastern 和 western 指代更大的地区 或 国土。且只能作为形貌词（adj）使用。

比如：

1. The northern parts of India have suffered severe flooding. （印度北部）
2. Houses are more expensive in most western parts of China.（中国北部）
3. San Diego is my favourite place in southern California.（= in the south of California） (加州南部)

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