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Session Length
~17 min
Adaptive Checks
15 questions
Transfer Probes
8
English grammar is the set of structural rules that governs the composition of clauses, phrases, and words in the English language. It encompasses everything from the basic building blocks of sentences — nouns, verbs, adjectives, and adverbs — to the complex systems of tense, mood, voice, and agreement that allow speakers and writers to express precise meanings. Understanding grammar is essential not only for clear communication but also for critical reading, persuasive writing, and standardized test performance.
The study of English grammar has evolved significantly over the centuries. Traditional grammar, rooted in Latin models, prescribed rigid rules about correctness and formality. Modern linguistics, beginning with scholars like Noam Chomsky, shifted the focus toward describing how language actually works in practice, distinguishing between prescriptive rules (what authorities say you should do) and descriptive rules (what native speakers naturally do). Today, the field integrates insights from syntax, morphology, semantics, and pragmatics to provide a comprehensive understanding of how English sentences are constructed and interpreted.
A solid grasp of English grammar has far-reaching practical benefits. In academic contexts, it strengthens essay writing, reading comprehension, and performance on exams such as the SAT, GRE, and IELTS. In professional settings, grammatical competence underpins effective emails, reports, and presentations. For non-native speakers, mastering English grammar is a critical milestone in achieving fluency. Whether one is a student, a professional writer, or a language learner, the principles of English grammar provide the foundation for precise, confident, and effective use of the language.
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The eight traditional categories into which words are classified based on their function in a sentence: nouns, pronouns, verbs, adjectives, adverbs, prepositions, conjunctions, and interjections. Each part of speech plays a distinct grammatical role.
Example: In the sentence 'She quickly opened the heavy door,' 'She' is a pronoun, 'quickly' is an adverb, 'opened' is a verb, 'the' is an article (a type of adjective), 'heavy' is an adjective, and 'door' is a noun.
The grammatical rule requiring that the verb in a sentence must agree in number (singular or plural) with its subject. Errors in agreement are among the most common grammatical mistakes in both writing and speech.
Example: 'The list of items is long' is correct because the subject is 'list' (singular), not 'items.' A common error is writing 'The list of items are long,' matching the verb to the nearest noun instead of the true subject.
The system of verb forms that indicate the time (past, present, future) and aspect (simple, progressive, perfect, perfect progressive) of an action or state. English has twelve main tense-aspect combinations that allow speakers to express nuanced temporal relationships.
Example: 'She writes' (simple present), 'She is writing' (present progressive), 'She has written' (present perfect), and 'She has been writing' (present perfect progressive) each convey a different relationship between the action and time.
Voice describes whether the subject of a sentence performs the action (active voice) or receives the action (passive voice). Active voice generally produces clearer, more direct sentences, while passive voice is useful when the actor is unknown or less important than the action.
Example: Active: 'The researcher conducted the experiment.' Passive: 'The experiment was conducted by the researcher.' Both convey the same event, but the emphasis shifts.
An independent clause contains a subject and verb and expresses a complete thought, capable of standing alone as a sentence. A dependent (subordinate) clause also has a subject and verb but cannot stand alone because it begins with a subordinating conjunction or relative pronoun.
Example: 'Although it was raining' is a dependent clause; it cannot be a sentence by itself. 'We went outside' is an independent clause. Combined: 'Although it was raining, we went outside.'
A comma splice occurs when two independent clauses are joined only by a comma, without a coordinating conjunction. A run-on (fused) sentence joins two independent clauses with no punctuation at all. Both are considered errors in standard written English.
Example: Comma splice: 'I enjoy reading, it relaxes me.' Run-on: 'I enjoy reading it relaxes me.' Correct versions include: 'I enjoy reading; it relaxes me' or 'I enjoy reading because it relaxes me.'
The rule that a pronoun must agree in number, gender, and person with the noun it replaces (its antecedent). Ambiguous or incorrect pronoun reference can cause confusion about who or what is being discussed.
Example: 'Each student must bring their notebook' uses the singular 'they' (widely accepted in modern English) to agree with the distributive 'each student.' Alternatively, 'All students must bring their notebooks' avoids the issue entirely.
The principle that items in a series, list, or comparison should share the same grammatical form. Parallelism improves readability, rhythm, and clarity, and is frequently tested on standardized exams.
Example: Not parallel: 'She likes hiking, to swim, and biking.' Parallel: 'She likes hiking, swimming, and biking.' All three items now use the gerund (-ing) form.
More terms are available in the glossary.
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