English Grammar

everyone needs to be...

Good morning everyone in the forum
In my today's lesson I read the following sentence:

"Everyone needs to be on their best behaviour."

To me: "everyone" is singular
"needs" is singular
why to put "their behaviour" and not "his" or "one's behaviour"?

10 comments - page 2

  • Thank Ah Q,

    for the full information added now to your first explanation on this subject. It's clear now after reading your well-choosen examples. Besides I followed your advice and typed it on my search-engine. There were lots of links as result.
    Thanks to everyone (Baille, Gee, Hannah, Martin...) for their inspiring discussion on similiar language problems.

Please sign in to leave a comment.