the foster families were <of> Mexican origin

park sang joon

Senior Member
Korean
Anxious to place orphaned children with Catholics, no one from the Foundling Hospital had cared that the foster families were of Mexican origin.
[Source: Reading for Results Ninth Edition by Laraine Flemming]

I'd like to know in "of Mexican origin" if "of" plays the role of changing the noun phrase, "Mexican origin" to an adjective phrase.
Thank you in advance for your help.
 
  • se16teddy

    Senior Member
    English - England
    You can say These families are of Mexican origin. Like you can say These families are Mexican.
    You can't say These are of Mexican origin families. Though you can say These are Mexican families.
     
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