The T-V distinction

Showing respect in English usually just means inserting the word "sir" or "ma'am" somewhere into the sentence. In most other languages, however, there is some additional grammatical work involved in displaying an appropriate level of resepect. Perhaps the most common way of doing this is by use of the T-V distinction.

T-V doesn't mean television
Subject nouns are universally understood to occur in the 1st person, 2nd person, and 3rd person, each in singular (I, you, he/she) and plural (we, you... continue reading at Fluent Every Year