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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Do you say "I am teacher" or "I am a teacher"? Master these tricky rules by testing your knowledge on professions, abstract nouns, generalizations, and specific vs. general contexts.

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"I'll take the chocolate cupcake, and the strawberry cupcake too." Sounds a bit repetitive, right? Master the art of natural speech by substituting singular and plural countable nouns with one and ones, and learn how to avoid confusing them with pronouns like it or them.

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The challenge covers the basics of adjectives and adverbs, including their usage, comparative and superlative forms, and the use of "enough" and "too" to indicate sufficiency and excess.

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Very often when we compare different objects or events. As we tend to be as colorful as possible, using only comparative or superlative form of adjectives is not always enough.

Because of this, we begin to add adverbs or special constructions such as far, by far, much, a lot, a little etc.

The knowledge of the rules how to use the intensifiers of comparison usually indicates an advanced student.

Have you ever caught yourself saying "I am knowing" instead of "I know," or asking for "an advice"? Polish your everyday English by testing yourself on stative verbs, tricky subject-verb agreement, uncountable nouns, and past tense rules.

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Do you know why we say "I would rather you didn't" when talking about the present? Master the tricky grammar behind expressing strong warnings and preferences by practicing negative "had better" statements, parallel structures, and past subjunctive forms across 15 questions.

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Are you making the same embarrassing grammar mistakes that native English speakers make every day? Master the rules behind the most commonly confused word pairs by practicing its vs. it's, fewer vs. less, and affect vs. effect.

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Is it I'd rather stay or I'd rather staying? And why does I'd rather you drove use the past tense for a present wish? Test yourself on would rather + base verb, prefer + gerund vs. infinitive, and would rather + someone else + past tense across 13 questions.

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This English grammar quiz is designed to check if an English learner is at B1/Intermediate CEFR level.

It covers a range of grammar and vocabulary concepts that are typically associated with Intermediate learners. These concepts include more advanced verb tenses such as present perfect and past continuous, complex sentence structures such as adverbial clauses and modal verbs, and a wide range of vocabulary related to various topics such as hobbies, and opinions. The quiz also tests the learner's ability to understand idiomatic expressions and phrasal verbs.

After taking the quiz, learners would be able to see where they stand in terms of their English proficiency and if they are ready to move to the next level. Passing the challenge indicates the control of English grammar enough to move to the next level.