Verb errors | All errors in verb tense or form, including relevant subject-verb agreement errors. |
Noun ending errors | Plural or possessive ending incorrect, omitted, or unnecessary; includes relevant subject-verb agreement errors. |
Article errors | Article or other determiner incorrect, omitted, or unnecessary. |
Wrong word | All specific lexical errors in word choice or word form, including preposition and pronoun errors. Spelling errors only included if the (apparent) misspelling resulted in an actual English word. |
Sentence structure | Errors in sentence/clause boundaries (run-ons, fragments, comma splices), word order, omitted words or phrases, unnecessary words or phrases, other unidiomatic sentence construction. |