their (GENERIC)

Here’s an expert example of using ‘their’ with a general reference:

Tech Guide

It‘s based on the idea that people learn best when they are actively involved in their education.

 

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The use of ‘their’ is confusing to give level to, because there is differing information between the English Vocabulary and Grammar Profiles, and secondly the uses are hard to locate in corpora automatically.

At B2, Point 58 in the category of DETERMINERS & possessive is defined as:

GENERIC ‘THEIR’ before nouns to refer to a generic body or group of people expressed as a singular subject

Everyone has their own opinion. …everyone has their preference…

Everyone has their own story, and it’s important for you to tell your own story, even to yourself.

listen

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In the EGP, Point 50, B1 examples:

They were having the time of their lives.  They filmed the artists and their work. 

Expert example:

You‘ve never raised your voice at them in all their lives.

The Scarlet and the Black

Locally, Long Beach fire and police officials have been unsuccessful in their attempts to find the cause in last night‘s explosion aboard the Japanese freighter Suma Maru.

Black Sunday

However, in the EVP ‘their’ is:

 

So formally we can investigate for indefinite pronouns to the left of ‘their’.  But first, we can check which _pn1 might work.

1 ONE 10647525

2 SOMETHING 7038440

3 EVERYTHING 3661675

4 SOMEONE 3447852

5 ANYTHING 3347793

6 EVERYONE 3007402

When we do a collocate search up to 4 to the right, every example was together on iWeb.

Does that qualify as a singular subject?

 

7 NOTHING 2966176

8 ANYONE 2741077
9 NO 881566

10 EVERYBODY 476935

11 NOBODY 451477
12 SOMEBODY 350684
13 ANYBODY 307399
14 NO-ONE 54132
15 SOME 32764