common grammar mistakes Archives - Advanced English Lab

Teacher explaining three rules for modal verbs on a classroom whiteboard with examples of correct and incorrect modal verb usage

Grammar

Modal Verbs: 3 Rules to Avoid Common Mistakes

writer August 31, 2026

1. Introduction to Modal Verbs Modal verbs are among the most frequently used words in English. They help us express ability, possibility, permission, obligation, advice,…

Teacher explaining confusing indefinite pronouns on a classroom whiteboard showing when to use singular and plural verbs with examples for most, all, none, any, and some.

Grammar

Confusing Indefinite Pronouns: Singular or Plural?

writer August 30, 2026

1. Introduction to Indefinite Pronouns Subject-verb agreement is a fundamental part of English grammar. A singular subject needs a singular verb, and a plural subject…

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common grammar mistakes

Confusing Indefinite Pronouns: Singular or Plural?

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