When to use a noun with article a and a noun in plural form

[Ferdie11]

Dear teachers,

Could you please tell me when I should use a noun with article a like in the first sentence below and when I should use a noun in plural form. Please see examples below.

1. By default, XY system automatically creates username depends on the first name and last name of a paticular account.

2. By default, XY system automatically creates username depends on the first name and last name of accounts.


Thank you for the help in advance.

[bhaisahab]

Dear teachers,

Could you please tell me when I should use a noun with article a like in the first sentence below and when I should use a noun in plural form. Please see examples below.

1. By default, XY system automatically creates username depends on the first name and last name of a paticular account.

2. By default, XY system automatically creates username depends on the first name and last name of accounts.


Thank you for the help in advance.

Neither example is very good, better would be: "By default the XY system automatically creates a username, using the first and last names of the owner of the account.

[Ferdie11]

Neither example is very good, better would be: "By default the XY system automatically creates a username, using the first and last names of the owner of the account.

I agree. But I'm still confused when to use a noun with article a, as in "a username" in your sentence, and a noun in plural form as in "first and last names", also in your sentence.

Hope this makes sense.

[Khosro]

I agree. But I'm still confused when to use a noun with article a, as in "a username" in your sentence, and a noun in plural form as in "first and last names", also in your sentence.

Hope this makes sense.

Note that if it is plural in bhaisahab sentence the reason is that they are two names, first and last.

[susiedqq]

Let me add to the confusion

I wonder if it means:

By default, the XY system automatically creates a username, depending on the first and last name on a particular account.

[Ferdie11]

Your post adds to the confusion indeed. Thanks, though.