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The following provides an overview of common grammar errors, especially those associated with depending on fallible spellcheckers. Spellcheckers (for purposes of this tutorial this includes grammar-checkers) continue to improve. However, many errors exist that a spellchecker might not catch. No easy trick exists to bypass this complication. Instead, make your use of correct grammar a habit rather than relying on the spellchecker to find your mistakes. Habitual use of correct grammar gives you insurance against spellcheckers and helps develop your overall writing and editing abilities.

Note: incorrect sentences appear throughout this tutorial in red. Additionally, an index of correct and incorrect sample sentences appears in Sections 15 and 16.

Contents: 

    1. Comma usage and sentence structure
    2. It's and its
    3. Their, there, they’re
    4. Verb subject agreement
    5. Verb tense agreement
    6. Words that change with a letter added or removed
    7. Quotation marks
    8. Direct quotes
    9. Commas and periods to the left of quotation marks
    10. Colons and semicolons to the right of quotation marks
    11. Homophones
    12. Apostrophes and plural nouns
    13. Commonly misplaced words
    14. Articles and nouns
    15. That and which
    16. Hyphens
    17. Use of elliptical sentences for the Flashcard project
    18. Revising your drafts
    19. Incorrect sample sentences
    20. Correct sample sentences