[I].Before date. 日期之前

I was born on the 18th of March.

[J].Before some musical instruments. 在一些乐器之前

I can play the piano. She can play the violin.

[K].Before directions. 之前的方向

the east the west the north the south

Note: Generally articles are not used before language, sports, days and months.

注：文章一般不在语言、运动......