Why do we say "time is an illusion" but "a terrifying silence"? Master the tricky exceptions of uncountable concepts by practicing zero articles for general ideas, definite articles for specified nouns, and indefinite articles for modified abstract nouns.

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Do you know how to use "Try as I might" or "Ridiculous as it sounds" correctly? Master advanced contrast structures by testing yourself on fronted adjectives with as/though, verb fronting, albeit, and much as.

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Are you ready to move beyond basic "if" clauses? Test your advanced grammar skills by mastering nuanced conditional phrases like supposing, provided that, on condition that, even if, and but for.

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Is it grammatically correct to say "another three weeks" or "many a student has"? Master the trickiest English agreement rules by testing your knowledge of "many a" phrases, amount vs. number, and determiners with irregular plurals and uncountable nouns.

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Do you know how to elegantly pivot back to a main story after a random tangent, or correctly use formal words like albeit and notwithstanding? Test your mastery of advanced transitions by practicing markers of concession, extent and purpose, and reformulation and resumption across 10 challenging questions.

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Why repeat yourself when you can drop words to create elegant, concise sentences? Test your advanced grammar skills on gapping, verb phrase (VP) ellipsis, and right node raising across 10 challenging questions.

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Do you know how to express an unfulfilled plan from the past or calculate exact durations leading up to a future deadline? Test your advanced grammar skills by mastering the future perfect continuous, future in the past, and nuanced expectation phrases like bound to and on the verge of.

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Do you know when to use got caught instead of was caught, or why a theory is understood rather than got understood? Challenge yourself with complex sentence structures, including dynamic get-passives, causative delegation, and adversative passives for describing unexpected misfortunes.

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Do you know how to drop the "if" to make your English sound more formal and dramatic? Master the art of inversion by testing your knowledge of first conditionals with should, second conditionals with were, third conditionals with had, and complex mixed conditionals.

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Do you know whether to write "It is I who is" or "It is I who am"? Test your advanced syntax skills by mastering pronoun and verb agreement, emphasizing prepositional phrases, and structuring complex adverbial and negative time clauses.

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Are you confused about when to use "needn't have done" instead of "didn't need to do"? Master the trickiest rules of English verbs by testing yourself on marginal modals, past regrets with ought to, and the modal forms of dare and need.

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Do you know the difference between an action that shouldn't have been done and one that needn't have been done? Put your advanced grammar skills to the test with continuous deductions, passive obligations, and unnecessary past actions.

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Can you clearly explain a chaotic sequence of past events without losing your listener? Put your storytelling skills to the test by mastering the Past Simple, Past Continuous, Past Perfect, and Past Perfect Continuous tenses in dramatic, real-world contexts.

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Are you impervious to grammar mistakes, or is your writing fraught with preposition errors? Test your high-level vocabulary by mastering advanced prepositional verbs and adjective-preposition combinations across dramatic, real-world scenarios.

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Can you confidently use present verbs to describe tomorrow's plans? Test your advanced grammar skills by mastering scheduled events, fixed personal arrangements, and future time clauses across high-stakes scenarios.

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Why do we say "most people" but "most of the people"? Master tricky grammar rules by testing yourself on quantifiers with object pronouns, specific vs. general determiners, and complex structures like every one of and none of the.

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Do you know how to link sentences using words like some, none, or half without creating a dreaded comma splice? Test your advanced grammar skills by mastering quantifiers with relative pronouns, choosing correctly between whom, which, and the tricky possessive whose.

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Do you know how to accurately report tricky statements like "What shall I do?" or "You mustn't enter"? Shifting modal verbs into reported speech requires much more than just a simple tense backshift. Test your advanced grammar skills on reporting shall for advice, must for prohibitions and obligations, and past modal deductions like must have and might have.

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Do you still use question word order when reporting what someone asked? Test your advanced grammar skills on reported wh- questions, yes/no questions, and infinitive commands in this 10-question challenge.

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Do you know the difference between "He spoke thankfully" and "Thankfully, he spoke"? Test your ability to set the tone of a sentence by mastering sentence adverbs, distinguishing them from adverbs of manner, and expressing attitude and certainty.

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Have you ever wondered why we say "be that as it may" instead of "is that as it may"? Master the remnants of the English subjunctive mood by practicing fixed expressions, concessive phrases, and hypothetical idioms across 10 challenging scenarios.

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Why do we say "I demand that he be fired" instead of "is fired"? The formal subjunctive mood ignores standard conjugation rules to express urgency, necessity, or strict demands. Test your advanced grammar skills by applying the active and passive subjunctive, negative subjunctive forms, and the continuous subjunctive.

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Do you know when to say "I suspect not" instead of "I don't suspect so"? Master advanced clause replacement by practicing negative expectations, adjective substitution, verb phrase fronting, and the tricky rules of stative verbs with "do".

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Do you know when to use "Were I to go" instead of "If I was going"? Master the art of formal hypotheticals by testing yourself on subject-verb inversion, the "were to" future conditional, and tricky mixed conditionals.

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Want to add a dramatic, native-level flair to your English sentences? Test your advanced grammar skills by mastering standard wh-clefts, reversed wh-clefts, action-focused cleft structures, and pseudo-clefts.

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Subjunctive mood is represented by three main forms in contemporary English: present subjunctive, past subjunctive, past perfect subjunctive. Other forms such as present continuous subjunctive and past continuous subjunctive are used very rarely.

These subordinate clauses may be divided into 4 types according to the realness of the condition and the time.

Apart from the aforementioned, advanced students are particularly interested in the accurate usage of such verbs as should, would, could, might, wish after if and in the case when it is omitted in the mixed type conditionals.

All this is simple and clear for you, and you would easily prove it passing a test on the subject, wouldn't you?

Test your Fluency Boost: Opinions, Academic Discourse & Adverb+Adjective Collocations skills with 24 questions at medium level.

Inversion is the change of a standard word order from subject-verb to verb-subject. If there is more than one verb, only the first auxiliary verb swaps places with the subject. Inversion is usually used in questions, but there are a number of other scenarios in which it applies. It is often used to make the speech more emphatic.

Inversion is not used a lot in everyday colloquial speech, it sounds a bit bookish and will remind people of Shakespeare’s times.

Hardly it makes knowledge of the rules of inversion less important for advanced students, does it?

This English grammar quiz is designed to check if an English learner is at C2/Upper Intermediate CEFR level.

This is a quiz to check if an English learner is at the C1/Advanced CEFR level. It tests the learner's ability to understand and use a wide range of complex and nuanced language. The questions will cover various grammar topics such as verb tenses, modals, passive voice, and idiomatic expressions. The learner will be expected to show a high degree of accuracy in their use of English. The quiz is designed to challenge even the most advanced learners and will be a good indicator of whether they have reached a C1 level of proficiency in the language.