What is the subject-verb agreement here?

Post date: 2021-06-18 17:00:12
Views: 598
I want to know the grammatical reasoning behind this: a) Each cat has a collar b) Each cat must have a collar Why does adding must change the subject-verb agreement? This is next to impossible to google an answer for as I'm not sure what grammatical rule/exception I'm looking for, and it is slowly driving me mad not knowing why.
Number of Comments
Please click Here to read the full story.
 
Other Top and Latest Questions:
Pentagon fires U.S. military newspaper leadership
Yields had a big week. Why these moves may be reminiscent of 1987
Bitcoin surges 22% for the week as investor optimism floods back
Book: Why I Love Horror: Essays on Horror Literature
Special Event: The Riffs of Isle of Rangoon: Technology
Book: Listen to Your Sister by Neena Viel
Movie: The Swindle
Dow surges 500 points Friday, but index posts back-to-back weekly losses
Six investors reveal the biggest market risks — and one strategy they agree on
Supreme Court allows Trump to continue White House ballroom construction for now