eEnglish

Capitalize titles in English

iI want to learn English because its first languagesthe most universal in the world.

Capitalize the first letter of the first word in a sentence. I think you meant first languages as most well know, so that is how you would express that.

iI want to learn English because it's firstthe most commonly understood languages in the world.

I is always capitalized. The first word of an English sentence is also capitalized. It's means "it is". Without the apostrophe, its is possessive. For example, the cat licked its fur. Mandarin has the most native speakers, but more people understand English than any other language. Finally, put a period at the end of every sentence.

eEnglish

iI want to learn English because it's firstthe number one languages in the world.

"the most spoken language in the world" would also work