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Browse Rules: 6,186 matches

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

Description Example Category
base form after I/you/we/they I really likes cats. Grammar
Two modal verbs in a row (could should) That could should do. Grammar
a fleet of ships are (is) A fleet of ships are spotted. Grammar
a fleet of ships have (has) A fleet of ships have been spotted. Grammar
a fleet of ships have (has) A colony of rats were subsequently found in a landfill near Medicine Hat in 2012. Grammar
Singular verb after 'these' or 'those' These includes the ring and the compass. Grammar
Singular verb after 'these' or 'those' Make sure that these two contains sufficient examples. Grammar
Singular verb after 'these' or 'those' Those two is nice. Grammar
Plural verb after 'this' or 'that' This are the options. Grammar
Plural verb after 'this' or 'that' You know this sheep eat grass, don't you? Grammar
LanguageTool 6.7-SNAPSHOT (2025-08-26 22:33:10 +0200)