Generally speaking, there are several formats for English screen names:

1. Letters + numbers: This method is usually used for simple names or names with letter combinations, such as "Airi" or "123 heart".

2. Surname + first name: This method is usually used for names based on surnames, such as "John Smith" or "Mia Philips".

3. Name + a phrase: This method is usually used for meaningful names or phrases, such as "Beautiful Mind" or "4D World".

4. Word + space: This method can be used for a simple, regular name, such as "Dreams come True" or "Science fiction".

5. Numbers + name: This method is usually used for names based on numbers, such as "1Love" or "3 eyes".

It should be noted that the format of English screen names may be different for each person, depending on personal preferences, cultural background and the meaning of the name. It is recommended to choose a simple, unique and memorable name so that it is easier to be discovered and contacted on the Internet.