北的形容詞可以用 northern（聽發音）這個單字來表達，例如北極光英文是 northern lights、北半球英文是 northern hemisphere、北愛爾蘭英文是 Northern Ireland，記得國家名稱開頭字母要大寫。
北英文造句練習
The northern and southern of Taiwan has a different development.臺灣的南部與北部有不同的發展。
I decided to go north, bless me!
我決定向北走，祝福我吧！
I heard there is a legend in the north.
我聽說北邊有一個傳說。
Compass has East, west, south, north four directions.
指南針上有東、西、南、北四個方位。
Kent once served a teacher in a north elementary school.
肯特曾經在一所北方的小學當老師。
China's northeast have many delicious flour food.
中國的東北地區有很好吃的麵食。
Now is the northern hemisphere summer.
現在是北半球的夏天。
The position of this company's factory in the north 3 kilometers from here.
這家公司的工廠的位置在這裡向北3公里處。