Verb forms show tense, voice, mood, or other grammatical features, with regular and irregular verbs. Regular verbs follow a pattern by adding -ed for past simple and past participle forms. Irregular verbs have unique forms, including essential auxiliary verbs "be," "have," and "do." Examples of common irregular verbs are "go," "write," "sing," and "swim."

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The Future Simple, Future Continuous, and Future Perfect tenses express actions or events in the future. Future simple describes an action's occurrence, future continuous highlights its ongoing nature, and future perfect emphasizes its completion by a specific time. These tenses are formed using different auxiliary verbs: "will/shall" for future simple, "will be/shall be" for future continuous, and "will have/shall have" for future perfect. Negative sentences and questions involve placing "not" after the auxiliary or inverting the auxiliary and subject, respectively.

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The Passive Voice emphasizes the action or receiver, using the verb to be and the past participle of the main verb. It can be formed in different tenses, including continuous and perfect. Negative sentences add not after the verb to be, while questions invert the subject and the verb to be.

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Modal verbs are auxiliary verbs that convey necessity, possibility, permission, or ability. They include "might," "may," "can," "could," "must," "should," and "have to." Modals have various uses, such as expressing possibility, knowing how to do something, asking for help, or indicating necessity. To negate a sentence with a modal verb, simply add "not" after the modal verb.

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This challenge focuses on Intermediate English level collocations. Collocations are natural-sounding word combinations, such as "lost and found," "rush hour," and "private property." Understanding collocations helps language learners sound more fluent in speaking and writing.

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There are five types of subordinate clauses in English: the subject, the predicative, the attributive, the object and several types of adverbial clauses.

Adverbials happen to be the thing this challenge is about.

There are five types of subordinate clauses in English: the subject, the predicative, the attributive, the object and several types of adverbial clauses.

In English grammar, all the clauses are subdivided into three main groups: noun clauses, adjective clauses and adverb clauses.

The Noun clauses include three types of subordinate sentences such as the subject clause, the predicative clause and the object clause. Usually in subordinate clauses we use the direct word order but in some cases we may face a particular version of inversion. Also, different subordinate clauses need to be introduced by different introductory words which cannot be omitted.

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In English there are some verb constructions having special indirect meaning, such as used to, would, get used to, get doing, be to do, happen to do, be going to do something, be about to do something etc.

For example “I would go swimming to the swimming pool in my childhood” – means that in the past I went to swim periodically but now I don’t go swimming anymore...

These constructions help to add different shades to the main meaning of a sentence without wordy explanations. Now, how about getting answering the questions?

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.

We use this expression to talk about habits or repeated actions in the past which we don't do in the present.

For instance: "I used to pass all these grammar tests with ease!"