I wrote “I know all these stuff; I don’t have to go over them again” in my writing-exam paper and the teacher corrected it to read, “I know all this stuff; I don’t have to go over it again.”

The teacher is Irish so I don’t think he would make a mistake but I think even if the first one (these) was wrong, the second one (them) should have stayed the same. Am I right?

closed as general reference by RegDwigнt Oct 25 '12 at 10:00

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information. If this question can be reworded to fit the rules in the help center, please edit the question.


Stuff is singular, so it needs to be preceded by the singular demonstrative determiner this. For the same reason, it needs to be referred to by the singular pronoun it and not the plural pronoun them.

  • Thank you.. So when I say "all this stuff" stuff stays singular Even though the meaning is pulural. Am I correct? – user28945 Oct 25 '12 at 8:04
  • 1
    Stuff is an uncountable, or mass, noun, and such nouns are grammatically singular. – Barrie England Oct 25 '12 at 8:07
  • @BarrieEngland: could it be "that stuff" as in, "I know that stuff pretty well." That sounds correct to my ear but I realize it could just be colloquial/slang. – ldog Apr 21 '15 at 21:29

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