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Quizzes > Literature & Language > English & Grammar

Ready to Spot Grammar Errors? Take the Quiz Now!

Identify Grammatical Errors Quickly with Our Free Online Grammar Test

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Teal background with paper cutout letters punctuation free grammar quiz testing common errors and sharpening writing skills

Think you know your way around commas and clauses? Our free grammar errors quiz invites language lovers and word wizards to test their skills on common grammatical mistakes and learn how to identify grammatical errors like a pro. You'll tackle misplaced modifiers, run-on sentences, and punctuation pitfalls, walking away with practical tips to sharpen your daily writing. This engaging common grammatical mistakes quiz doubles as an online grammar test and a free grammar quiz that refines your writing acumen. Ready for an extra challenge? Jump into our interactive grammar and punctuation quiz or kick off the adventure with a quick grammar quiz . Click to get started and elevate your syntax savvy today!

Which sentence demonstrates correct subject-verb agreement?
The books was on the shelf.
The dog bark at night.
The list of items are on the desk.
The team is winning the game.
The subject 'The team' is singular and requires the singular verb 'is'. Subject-verb agreement ensures that subjects and verbs match in number. Misaligned agreement like 'The team are winning' would be incorrect for a singular noun. Purdue OWL: Subject-Verb Agreement
Which word correctly completes the sentence: _____ going to the concert tonight.
There
They're
Theirs
Their
The contraction 'They're' stands for 'They are', which fits the context 'They are going to the concert'. 'Their' indicates possession and 'There' refers to a place, both incorrect here. 'Theirs' is also a possessive pronoun that does not suit this sentence. Cambridge Dictionary: Their, There, They're
Which sentence uses commas correctly?
My brother, who lives in Seattle is visiting.
My brother, who lives in Seattle, is visiting.
My brother who, lives in Seattle, is visiting.
My brother who lives in Seattle is visiting.
The nonrestrictive clause 'who lives in Seattle' provides extra information about 'my brother' and must be set off by commas. Without commas, it implies a specific subset of brothers. Incorrect comma placement can change meaning or cause confusion. Grammarly: Restrictive vs. Nonrestrictive Clauses
What error type is in the sentence: "She was tired, she went to bed early."
Pronoun-antecedent disagreement
Comma splice
Sentence fragment
Misplaced modifier
A comma splice occurs when two independent clauses are joined by a comma without a coordinating conjunction. Here, 'She was tired' and 'she went to bed early' are both independent clauses improperly connected only by a comma. To correct it, you can use a semicolon, add a conjunction, or create two sentences. Grammarly: Comma Splice
Each of the players must bring ___ own water bottle.
its
our
his or her
their
Using 'his or her' matches the singular antecedent 'Each'. Although singular 'they' is common informally, it's traditionally considered plural. 'Its' refers to neuter nouns like 'animal' or 'object'. 'Our' would change the subject to plural. Purdue OWL: Pronouns
Which sentence has correct parallel structure?
He likes to cook, running, and swimming.
He likes cooking, to run, and swimming.
He likes cooking, running, and to swim.
He likes cooking, running, and swimming.
Parallel structure requires the same grammatical form in a series. 'Cooking, running, and swimming' all use gerunds, keeping the list balanced. Mixing gerunds with infinitives, like 'to swim', breaks the parallelism. Grammarly: Parallel Structure
Which sentence uses an apostrophe correctly to show possession?
The dog's bone is buried in the yard.
The dogs' bone is buried in the yard.
The dogs bone is buried in the yard.
The dogs bone's is buried in the yard.
The singular noun 'dog' possesses the bone, so the apostrophe comes before the 's'. 'The dog's bone' correctly indicates singular possession. 'Dogs'' would show possession by multiple dogs, which isn't the intended meaning. Proper apostrophe placement clarifies ownership. Grammarly: Apostrophes
Choose the correct subjunctive form: "If I ____ you, I'd apologize immediately."
were
be
am
was
The subjunctive mood uses 'were' after 'If I' to express a hypothetical or contrary-to-fact condition. While 'If I was' appears in informal speech, 'were' is required in formal subjunctive constructions. Using 'were' signals that the statement is not factual. Grammarly: Subjunctive Mood
Which sentence avoids splitting the infinitive?
Boldly to go where no man has gone before.
Where no man has gone before to go boldly.
To go boldly where no man has gone before.
To boldly go where no man has gone before.
A split infinitive places an adverb between 'to' and the verb (e.g., 'to boldly go'). 'To go boldly' keeps the infinitive intact. Although modern usage often accepts split infinitives, formal writing still prefers them to remain unsplit. Merriam-Webster: Split Infinitive
Which sentence contains a dangling participle?
Reading the book, she found the ending predictable.
After reading the book, the movie was disappointing.
After reading the book, she discussed its themes.
The movie was disappointing, after reading the book.
A dangling participle is a descriptive phrase that doesn't clearly modify the intended subject. Here, 'After reading the book' incorrectly modifies 'the movie' rather than a person. This creates a logical mismatch since the movie didn't read the book. Grammarly: Dangling Participles
Which sentence correctly uses 'whom'?
Whom called you from the office?
To whom did you give the keys?
Who are you talking to?
Whom is going to the party tonight?
The pronoun 'whom' is used as the object of the preposition 'to', making 'To whom did you give the keys?' correct. 'Whom is going...' and 'Whom called you...' misuse 'whom' as a subject. The informal 'Who are you talking to?' avoids a prepositional 'whom' but isn't formally correct. Purdue OWL: Who vs. Whom
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Study Outcomes

  1. Identify Common Grammatical Mistakes -

    Gain the ability to spot frequent errors like subject-verb disagreement and misplaced modifiers in sentences.

  2. Differentiate Between Similar Error Types -

    Learn how to distinguish common pitfalls such as its vs. it's and affect vs. effect for precise word choice.

  3. Apply Core Grammar Rules -

    Master essential grammar conventions and usage rules to correct mistakes and strengthen your writing.

  4. Analyze Sentence Structures -

    Develop the skill to break down complex sentences and understand how grammatical elements interact.

  5. Enhance Proofreading and Editing Skills -

    Practice reviewing and revising text to ensure clarity, coherence, and error-free writing.

  6. Boost Writing Confidence -

    Build assurance in your grammar proficiency, empowering you to write more effectively in academic and professional contexts.

Cheat Sheet

  1. Subject-Verb Agreement -

    Master matching subjects and verbs in both singular and plural forms by following Purdue OWL guidelines. Use the mnemonic "She runs, they run" to recall that third-person singular verbs add an - s while plurals do not. Testing this in your online grammar test helps you identify grammatical errors instantly.

  2. Pronoun-Antecedent Consistency -

    Ensure every pronoun clearly refers back to a specific noun, as recommended by the University of Cambridge Style Guide. For example, replace "Each student must submit their paper" with "Each student must submit his or her paper" to avoid mismatch. Spotting such slips in the common grammatical mistakes quiz builds your clarity skills.

  3. Comma Splices and Run-Ons -

    Learn to separate independent clauses properly using a period, semicolon, or coordinating conjunction (FANBOYS), per The Chicago Manual of Style. A quick trick: if you can insert "and" or "but," a comma plus that conjunction often fixes a splice. Practicing this in the free grammar quiz trains you to tidy up run-on sentences.

  4. Parallel Structure -

    Maintain balance in lists or paired ideas by mirroring grammatical forms, as outlined by Merriam-Webster's usage guide. For instance, write "She likes hiking, swimming, and biking" rather than mixing forms like "hiking, to swim, and biking." Identifying such mistakes in a grammar errors quiz sharpens your stylistic precision.

  5. Misplaced and Dangling Modifiers -

    Place descriptive phrases next to the words they modify to avoid confusion, following advice from the University of Oxford's style guide. Swap "Walking to class, my books felt heavy" for "Walking to class, I felt my books were heavy" to make the subject clear. Catching these slip-ups in an online grammar test boosts your proofreading confidence.

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