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Quizzes > English & Grammar

English IQ Test: Check Your Grammar Skills

Quick, free grammar IQ test with instant results.

Editorial: Review CompletedCreated By: I Kade Joni Asmara Adi PutraUpdated Aug 25, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper cut layers show letters pencil and magnifying glass on blue background for grammar quiz and confidence boost

This English IQ test helps you check grammar skills, spot errors, and see your level. You'll get instant results to see what to review next. If you want more challenge, try our advanced english grammar quiz or take a quick syntax quiz with answers. Want to push even further? Practice tough rules with a hard grammar test.

Choose the sentence with correct subject-verb agreement. Explanation: "Data" is a plural noun in formal English, so it takes a plural verb.
The data are convincing.
The datum are convincing.
The data is convincing.
The datas are convincing.
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Identify the sentence that uses the present perfect correctly. Explanation: Present perfect links a past action to the present without a finished time; "have already eaten" fits.
I had already eat.
I already eat yesterday.
I have ate already.
I have already eaten.
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Pick the sentence with the correct comparative form. Explanation: Two-syllable adjectives ending in -y typically take -ier: "happier."
She is happiest than before.
She is happier than before.
She is most happy than before.
She is more happy than before.
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Choose the correct pronoun in the object position. Explanation: After a preposition like "between," use object pronouns.
Between yourself and I, this plan will work.
Between you and I, this plan will work.
Between you and me, this plan will work.
Between yours and me, this plan will work.
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Pick the correct article usage with a vowel sound. Explanation: Use "an" before vowel sounds like in "honest" (silent h).
He is a honesty person.
He is an honest person.
He is an honesty person.
He is a honest person.
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Identify the correctly placed adverb of frequency. Explanation: Adverbs like "often" usually come before the main verb but after "be."
She is oftenly visiting her grandparents.
She often visits her grandparents.
She visits often her grandparents.
She visits her grandparents oftenly.
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Pick the correct form after a preposition. Explanation: After prepositions, use a gerund, not an infinitive.
She is interested in to learn Spanish.
She is interested in learning Spanish.
She is interested learn Spanish.
She is interested to learning Spanish.
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Select the correctly punctuated sentence with a nonrestrictive clause. Explanation: Nonrestrictive clauses are set off by commas and use "which."
The book, that I borrowed, was fascinating.
The book, which I borrowed, was fascinating.
The book that I borrowed, was fascinating.
The book which I borrowed was, fascinating.
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Select the correctly hyphenated compound modifier. Explanation: Compound modifiers before a noun are hyphenated to avoid ambiguity.
She gave a wellresearch ed presentation.
She gave a well-researched presentation.
She gave a wellresearched- presentation.
She gave a well researched presentation.
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Choose the sentence that correctly uses the subjunctive mood. Explanation: After "If I were," use "were" for hypothetical present situations.
If I been taller, I would play center.
If I am taller, I would play center.
If I was taller, I would play center.
If I were taller, I would play center.
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Choose the sentence with parallel structure. Explanation: Items in a series should have the same grammatical form.
The job requires to write, editing, and to present.
The job requires writing, editing, and to present.
The job requires writing, editing, and presenting.
The job requires writing, to edit, and presenting.
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Select the sentence without a comma splice. Explanation: A semicolon can correctly join two independent clauses.
It was late; we went home.
It was late, we went home.
It was late and, we went home.
It was late we went home.
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Pick the correctly punctuated sentence with a list. Explanation: A colon introduces a list after a complete clause.
Bring the following: water, snacks, and sunscreen.
Bring: the following water, snacks, and sunscreen.
Bring the following, water, snacks, and sunscreen.
Bring the following; water, snacks, and sunscreen.
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Identify the correct reported speech shift. Explanation: In backshifting, present simple often becomes past simple.
She said that she likes jazz yesterday.
She says that she liked jazz yesterday.
She said that she like jazz.
She said that she liked jazz.
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Choose the correct relative pronoun for people in an object role. Explanation: Use "whom" when it functions as an object of a verb or preposition.
The person to who I spoke was helpful.
The person which I spoke to was helpful.
The person to whom I spoke was helpful.
The person whom spoke to I was helpful.
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Pick the sentence with correct apostrophe usage for possession. Explanation: Singular noun possession adds 's even if the noun ends in s.
Jame's car is new.
James's car is new.
James car is new's.
James' car is new
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Choose the sentence that avoids a dangling modifier. Explanation: The subject performing the -ing action must follow the modifier.
Walking down the street, there was a parade.
Walking down the street, excitement was everywhere.
Walking down the street, I saw a parade.
Walking down the street, a parade was seen.
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The past participle of "lie" (to recline) is "lain." Explanation: "Lie, lay, lain" is the principal parts sequence for reclining.
False
True
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The subjunctive in "I suggest that he be on time" is correct. Explanation: After verbs of suggestion, "be" is the bare subjunctive.
True
False
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Choose the correct form after "make" in causatives. Explanation: After "make," use a bare infinitive: make someone do.
The coach made us to run laps.
The coach made us ran laps.
The coach made us running laps.
The coach made us run laps.
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Study Outcomes

  1. Analyze Common Grammatical Errors -

    Use this iq test english challenge to spot mistakes in tense, agreement, and sentence structure, enhancing your error-detection skills.

  2. Apply English Grammar Rules -

    Practice proper usage of articles, prepositions, and verb forms in context-driven questions from our english grammar quiz.

  3. Interpret Punctuation and Syntax -

    Work through targeted items in this online grammar quiz to understand the role of commas, semicolons, and conjunctions for improved clarity.

  4. Evaluate Writing Strengths -

    Receive instant feedback on your answers to gauge areas of proficiency across diverse grammar topics.

  5. Identify Areas for Improvement -

    Pinpoint specific grammar rules where you need practice, allowing you to focus your studies effectively.

  6. Benchmark Your Grammar IQ -

    Compare your performance with average results in this grammar iq test to measure progress and set future learning goals.

Cheat Sheet

  1. Subject-Verb Agreement -

    Ensuring the subject and verb agree in number and person is vital for any iq test english question. Purdue OWL notes that collective nouns (team, committee) take singular verbs (The team is winning). A quick check: in "Neither the dog nor the cats run fast," match the verb to the nearer subject.

  2. Comma Usage & Oxford Comma -

    Mastering comma placement boosts clarity in your english grammar quiz and grammar iq test answers. According to the Cambridge Dictionary, use commas to separate items in a series: "bread, butter, and jam" (remember that final Oxford comma when you list three or more). A handy mnemonic is "ABC, and D" to recall that extra comma before "and."

  3. Complex & Compound Sentences -

    Identifying independent and dependent clauses helps you master complex sentence structure on an english grammar trivia round. The FANBOYS acronym (for, and, nor, but, or, yet, so) reminds you to use commas before coordinating conjunctions linking two independent clauses. For semicolons, Cambridge English suggests using them to join closely related independent clauses without a coordinating conjunction.

  4. Commonly Confused Words -

    Spot the difference between there/their/they're and its/it's to avoid pitfalls in any grammar IQ test. Merriam-Webster recommends the "possession test" for its vs. it's: if you can replace it with "his" and it still makes sense, use its. For your/you're, remember "you are" contracts to you're when you can insert "are."

  5. Parallel Structure -

    Maintaining parallelism in lists and comparisons makes your writing consistent and clear for an online grammar quiz. Purdue OWL advises matching grammatical forms: "She likes reading, jogging, and cooking" (all gerunds). A simple trick: when in doubt, read the sentence aloud; mismatched rhythms often reveal lack of parallel structure.

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