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Browse Rules: 6,149 matches

These are some of the errors that LanguageTool can detect. Visit the LanguageTool homepage to use it online.

Description Example Category
Agreement: 'I is / you is / ... ' They isn't too old for that. Grammar
Agreement: 'one' + plural word I drew one hexagons on my paper. Grammar
Agreement: Mass/singular noun + non-third-person verb Marketing are bad for you. Grammar
Agreement: Mass/singular noun + non-third-person verb Marketing, for instance, are bad for you. Grammar
Agreement: Mass/singular noun + non-third-person verb The marketing are bad for you. Grammar
Agreement: Mass/singular noun + non-third-person verb The marketing, for example, are bad for you. Grammar
Agreement: Mass/singular noun + non-third-person verb The dog eat. Grammar
Agreement: Mass/singular noun + non-third-person verb The dog, whose owner likes you, eat. Grammar
Agreement: Mass/singular noun + non-third-person verb She asked whether marketing are bad for you. Grammar
Agreement: Mass/singular noun + non-third-person verb She asked whether marketing, for instance, are bad for you. Grammar
LanguageTool 6.8-SNAPSHOT (2026-02-07 22:33:08 +0100)