This document provides examples and explanations for identifying errors related to subject-verb agreement in English. It covers four skills:
1. Verb agreement after prepositional phrases, where the subject and verb can be separated.
2. Verb agreement after quantity words like "all" or "some", where the subject can be singular or plural.
3. Verb agreement with inverted subjects and verbs.
4. Subject-verb agreement after certain singular words like "everybody", even if they have a plural meaning.
Practice questions with answers are provided for each skill to help identify errors in subject-verb agreement.