Should I use A Singular or A Plural Verb with Collective Nouns such as government, committee and family?
Such nouns are used to refer both to a whole group as a singular entity and to the members of the group. The context may therefore require flexibility. You might write:
• The committee has now come to a decision.
But you could hardly use a singular verb in this sentence.
• The committee have now taken their seats. (WRONG)
A pedant might insist on writing : The members of the committee have now taken their seats.
In some contexts it is natural and idiomatic to use a plural verb with a noun which is singular in form:
• I have invited my family to tea and they are coming on Friday
• Leeds United are winning. They have just scored.