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Rule "Agreement: Mass/singular noun + non-third-person verb"

This is one of many errors that LanguageTool can detect.

Description: Agreement: Mass/singular noun + non-third-person verb
Message: Consider using third-person verb forms for singular and mass nouns.
Category: Grammar (ID: GRAMMAR)
Incorrect sentences
that this rule can detect:
  • She asked whether marketing are bad for you.
    Correction suggestion: is
  • This is a company where marketing mean a lot of trouble.
    Correction suggestion: means
Correct sentences
for comparison:
  • What color are the walls in your room?
  • The tool must be able to assess which language level the text is at
  • At about what age do the Japanese marry?
  • To what extent are the ...
ID: MASS_AGREEMENT [7]
Version: 6.6-SNAPSHOT (2024-12-13 22:33:10 +0100)