Each letter in the abbreviation is followed by a period (i.e. and e.g.). If they're at the beginning of a sentence, the first letter is capitalized (I.e. and E.g.). I.e. and e.g. don't need to be italicized. When they're in the middle of a sentence, or within parentheses, they are followed by a comma.

How do you properly use eg?

e.g. is used to introduce examples in a sentence, so it's always followed by an example or examples. That means e.g. is usually used in the middle of a sentence and never found at the very end. When you use e.g. in a sentence both the letters 'e' and 'g' should be lowercase.

How do you write eg UK?

It can be pronounced as "e.g." or "for example": You should eat more food that contains a lot of fibre, e.g. fruit, vegetables, and bread. The names of political parties are always capitalized, e.g. the Green Party. You often write a slash between alternatives, e.g. "and/or".