English grammar is not, as it is sometimes portrayed, a set of arbitrary restrictions designed to make the language harder. It is a descriptive system: a map of how the language actually works. Understanding basic English grammar does not mean memorising rules by rote. It means developing an intuitive and analytical grasp of how words function, how sentences are built, and how meaning is shaped by structure.
This pillar page provides the most comprehensive guide to English grammar available in one place. It covers every major English grammar topic, with clear definitions, rules, examples and links to dedicated concept pages for deeper study of each area. Whether you are a student building your foundation in basic English grammar, a teacher seeking a structured overview or an advanced learner looking to refine your command of complex areas, this page is designed to serve as your complete reference point.

English grammar is the set of structural rules and conventions that govern the English language. It describes how words are classified, how they change form to indicate tense, number or gender, how they are ordered within sentences and how sentences are constructed to communicate meaning.
The building blocks of English grammar:
|
Level |
What It Covers |
|
Word level |
Parts of speech: nouns, verbs, adjectives, adverbs, pronouns, prepositions, conjunctions, interjections, determiners |
|
Phrase level |
Groups of words without a subject-verb pair: noun phrases, verb phrases, adjective phrases, adverb phrases, prepositional phrases |
|
Clause level |
Groups of words containing a subject and a verb: main clauses, subordinate clauses, relative clauses |
|
Sentence level |
Complete units of meaning: simple, compound, complex, compound-complex sentences |
|
Text level |
How sentences combine and connect to form coherent paragraphs and extended writing |
Parts of speech are the fundamental categories of English grammar. Every word in the English language belongs to at least one part of speech, and understanding what each category does is the starting point for understanding basic English grammar.
There are eight traditional parts of speech in English: nouns, pronouns, verbs, adjectives, adverbs, prepositions, conjunctions, and interjections. Some modern grammarians add determiners as a ninth category.
Quick reference: Parts of speech
|
Part of Speech |
Function |
Example |
|
Names a person, place, thing, or idea |
teacher, city, courage |
|
|
Replaces a noun |
she, they, it |
|
|
Shows action or state of being |
run, is, completed |
|
|
Describes a noun or pronoun |
tall, three, beautiful |
|
|
Modifies a verb, adjective, or adverb |
quickly, very, often |
|
|
Shows relationship between a noun and another word |
on, before, under |
|
|
Joins words, phrases, or clauses |
and, but, because |
|
|
Expresses sudden emotion |
Wow!, Alas!, Oh! |
|
|
Specifies or quantifies a noun |
the, a, each, some |
Key principle: The same word can belong to different parts of speech depending on how it is used.
A sentence is the fundamental unit of communication in English grammar. It is a group of words that contains at least one subject and one verb and expresses a complete thought.
The four types of sentences by purpose:
1. Declarative sentences make a statement.
2. Interrogative sentences ask a question.
3. Imperative sentences give a command or instruction.
4. Exclamatory sentences express strong emotion.
The four types of sentences by structure:
1. Simple sentences contain one independent clause.
2. Compound sentences contain two or more independent clauses joined by a coordinating conjunction or semicolon.
3. Complex sentences contain one independent clause and at least one subordinate clause.
4. Compound-complex sentences contain at least two independent clauses and at least one subordinate clause.
Essential parts of a sentence:
'The teacher (subject) explained (predicate/verb) the lesson (object) clearly (adverb).'
Nouns are naming words. They are one of the most fundamental categories in English grammar and appear in almost every sentence.
Types of nouns:
Noun number: Singular and plural
Noun gender:
In modern English, gender is largely relevant only for pronouns and a small number of nouns.
Noun case:
Pronouns replace nouns to avoid repetition and maintain the flow of communication. They are a core component of basic English grammar and must agree with the nouns they replace in number, gender, and person.
Types of pronouns:
|
Person |
Singular |
Plural |
|
First |
I, me, my, mine, myself |
we, us, our, ours, ourselves |
|
Second |
you, your, yours, yourself |
you, your, yours, yourselves |
|
Third |
he/she/it, him/her/it, his/her/its |
they, them, their, theirs, themselves |
Verbs are the most grammatically complex part of speech in English grammar. Every complete sentence must contain a verb. Verbs show action, occurrence, or state of being, and they change form to indicate tense, number, person, voice, and mood.
Types of verbs:
Verb forms:
|
Form |
Example (verb: write) |
|
Base form |
write |
|
Third person singular present |
writes |
|
Present participle |
writing |
|
Simple past |
wrote |
|
Past participle |
written |
Subject-verb agreement:
A verb must agree with its subject in number and person.
Special cases: collective nouns (the team is/are), indefinite pronouns (everyone is), compound subjects joined by 'either...or' (verb agrees with the nearer subject).
Adjectives describe or modify nouns and pronouns. They answer the questions: what kind? which one? how many? in what condition?
Types of adjectives:
Degrees of comparison:
|
Degree |
Formation |
Example |
|
Positive |
Base form |
tall, beautiful |
|
Comparative |
+ '-er' or 'more' + adjective |
taller, more beautiful |
|
Superlative |
+ '-est' or 'most' + adjective |
tallest, most beautiful |
Rules: One-syllable adjectives generally use '-er'/'-est.' Adjectives of three or more syllables use 'more'/'most.' Two-syllable adjectives vary. Irregular comparatives: good/better/best, bad/worse/worst, little/less/least.
Position of adjectives:
When more than one adjective precedes a noun, they follow a conventional order: opinion, size, age, shape, colour, origin, material, purpose.
'A beautiful (opinion) small (size) old (age) round (shape) red (colour) wooden (material) box.'
Adverbs modify verbs, adjectives or other adverbs, providing information about how, when, where, how often, or to what extent something happens.
Types of adverbs:
Formation of adverbs:
Position of adverbs:
Articles in English grammar are a small but extremely important category. They are determiners that precede nouns and indicate whether the noun refers to something specific or general.
The three articles:
The indefinite articles 'a' and 'an':
Use 'a' or 'an' when referring to something for the first time, when it is one of many, or when the specific identity is not important.
Note: The choice between 'a' and 'an' depends on the sound that follows, not the letter.
The definite article 'the':
Use 'the' when the noun has been mentioned before, when both speaker and listener know which specific thing is meant, when there is only one of something, or before superlatives, ordinals, and specific categories.
Prepositions are words that show the relationship between a noun or pronoun and another element in the sentence. They indicate direction, place, time, cause, manner, or possession and are an essential component of English grammar topics at every level.
Types of prepositions:
1. Prepositions of place: in, on, at, under, above, below, beside, between, behind, in front of, next to, opposite.
2. Prepositions of time: at, on, in, before, after, during, since, for, until, by, from, to.
3. Prepositions of direction/movement: to, towards, into, through, across, along, up, down, over, under, past.
4. Prepositions of cause/reason: because of, due to, owing to, on account of.
5. Prepositions of manner: by, with, without, like.
6. Simple and compound prepositions:
Conjunctions join words, phrases, or clauses and show the relationship between them. They are essential tools in English grammar for building more complex and coherent sentences.
Types of conjunctions:
1. Coordinating conjunctions join two grammatically equal elements: for, and, nor, but, or, yet, so.
2. Subordinating conjunctions join a subordinate clause to a main clause. Common subordinating conjunctions include: although, because, since, when, while, if, unless, until, after, before, as, though, even though, so that, in order that.
3. Correlative conjunctions work in pairs: both...and, either...or, neither...nor, not only...but also, whether...or.
Interjections are words or phrases that express sudden emotion or feeling. They stand apart from the grammatical structure of the sentence and are particularly common in spoken English.
Common interjections and their emotions:
Examples:
Determiners are words placed before nouns to specify or quantify them. While sometimes classified within adjectives or as a separate part of speech, they form a distinct and important category in English grammar.
Types of determiners:
1. Articles: a, an, the (covered in the articles section above)
2. Demonstrative determiners: this, that, these, those.
3. Possessive determiners: my, your, his, her, its, our, their.
4. Quantifiers: some, any, many, much, few, little, several, enough, all, most, no, a lot of.
5. Distributive determiners: each, every, either, neither, both, any.
6. Interrogative determiners: which, what, whose.
7. Numbers (numeral determiners): cardinal (one, two, three) and ordinal (first, second, third).
Tenses are one of the most important areas of English grammar. They indicate when an action occurs: in the past, present, or future. English has three primary time frames and four aspects within each, creating twelve tense forms.
|
Tense |
Form |
Example |
|
base form / +s |
She writes. |
|
|
am/is/are + -ing |
She is writing. |
|
|
have/has + past participle |
She has written. |
|
|
have/has been + -ing |
She has been writing. |
|
|
past form |
She wrote. |
|
|
was/were + -ing |
She was writing. |
|
|
had + past participle |
She had written. |
|
|
had been + -ing |
She had been writing. |
|
|
will + base form |
She will write. |
|
|
will be + -ing |
She will be writing. |
|
|
will have + past participle |
She will have written. |
|
|
will have been + -ing |
She will have been writing. |
Modals in English grammar are auxiliary verbs that express possibility, necessity, permission, ability, obligation, or other modal meanings. They always appear with the base form of the main verb and do not change form for person or number.
The primary modal verbs:
Can, could, may, might, shall, should, will, would, must, ought to, need, dare, used to
Key uses of modals in English grammar:
1. Ability:
2. Possibility:
3. Permission:
4. Obligation and necessity:
5. Certainty and deduction:
6. Willingness and offers:
7. Polite requests:
Complete reference: Modals in English grammar
|
Modal |
Primary Uses |
Example |
|
can |
ability, informal permission, possibility |
She can play the piano. |
|
could |
past ability, polite request, possibility |
Could you help me, please? |
|
may |
formal permission, possibility |
May I come in? |
|
might |
remote possibility, suggestion |
It might work. |
|
shall |
future (formal), offers, suggestions |
Shall we begin? |
|
should |
advice, mild obligation, expectation |
You should rest. |
|
will |
future, willingness, certainty |
I will call you tomorrow. |
|
would |
polite request, hypothetical, past habit |
Would you like some tea? |
|
must |
strong obligation, logical deduction |
You must wear a seatbelt. |
|
ought to |
moral obligation, expectation |
You ought to apologise. |
|
need |
necessity (formal) |
You need not worry. |
|
dare |
challenge, courage (formal) |
Dare you speak to him? |
|
used to |
past habit or state (no longer true) |
She used to live here. |
Semi-modals and related expressions:
English grammar active and passive voice describes two ways of structuring a sentence depending on whether the subject performs or receives the action.
Active voice:
In the active voice, the subject performs the action.
Structure: Subject + verb + object.
Passive voice:
In the passive voice, the subject receives the action. The agent (performer of the action) may or may not be mentioned.
Structure: Subject + auxiliary verb (be) + past participle (+ by + agent).
Direct and indirect (reported) speech is a key area of English grammar topics, dealing with how spoken words are reported or quoted.
Direct speech:
Direct speech quotes the exact words spoken, enclosed in inverted commas.
Indirect (reported) speech:
Indirect speech reports what was said without quoting the exact words. Inverted commas are not used.
Punctuation is the system of marks used in written English grammar to clarify meaning, indicate pause and separate sentence elements. Correct punctuation is essential for clear and readable writing.
1. Full stop (.)
Used to end a declarative or imperative sentence.
2. Comma (,)
Used to separate items in a list, to set off introductory elements, to separate coordinating clauses, to set off non-essential clauses or phrases, and to set off direct address.
3. Question mark (?)
Used at the end of a direct question.
4. Exclamation mark (!)
Used after exclamations and strong commands.
5. Semicolon (;)
Used to join two closely related independent clauses without a conjunction and to separate items in a complex list.
6. Colon (:)
Used to introduce a list, a quotation, or an explanation.
7. Apostrophe (')
Used to show possession and to mark omitted letters in contractions.
8. Inverted commas and Quotation Marks (' ')
Used to enclose direct speech, titles of short works, and words used in a special sense.
9. Hyphen (-)
Used to join compound words and to divide words at the end of a line.
10. Ellipsis (...)
Used to indicate omitted words or a trailing off of thought.
11. Brackets ( ) and square brackets [ ]
Round brackets enclose additional information that could be removed without changing the sentence's meaning.
A phrase is a group of words that functions as a unit within a sentence but does not contain both a subject and a verb.
Types of phrases:
1. Noun phrase: a noun and its modifiers.
2. Verb phrase: a main verb and any auxiliary verbs.
3. Adjective phrase: an adjective with its modifiers or complements.
4. Adverb phrase: an adverb with its modifiers.
5. Prepositional phrase: a preposition followed by its object (a noun phrase).
6. Participial phrase: a participle and its complements or modifiers, functioning as an adjective.
7. Infinitive phrase: an infinitive and its complements or modifiers.
8. Gerund phrase: a gerund (verb + -ing functioning as a noun) and its complements.
A clause is a group of words that contains both a subject and a verb. It is the building block of sentences in English grammar.
1. Independent (main) clauses:
An independent clause expresses a complete thought and can stand alone as a sentence.
2. Dependent (subordinate) clauses:
A subordinate clause contains a subject and a verb but cannot stand alone. It depends on a main clause for its meaning.
3. Noun clauses function as nouns (subject, object, or complement).
4. Adjective (relative) clauses modify nouns or pronouns. They are introduced by relative pronouns (who, whom, whose, which, that).
5. Adverb clauses modify verbs, adjectives, or adverbs and answer questions of time, place, reason, condition, concession, purpose, or result.
A. Identify the part of speech of each highlighted word.
B. Fill in each blank with 'a', 'an', or 'the’ or leave it blank (no article needed).
C. Identify the tense used in each sentence. Then rewrite each sentence in the tense given in brackets.
D. Choose the most appropriate modal from the brackets to complete each sentence. Then identify what the modal expresses (ability, permission, obligation, possibility, advice, or deduction).
E. Rewrite each active sentence in the passive voice and each passive sentence in the active voice. Maintain the same tense throughout.
Active to passive:
Passive to active:
F. Convert each sentence from direct to indirect speech or from indirect to direct speech as indicated.
Direct to indirect:
Indirect to direct:
G. Read the passage below. Then complete the tasks that follow.
'Every morning, Kavya would walk through the quiet streets of her neighbourhood and arrive at the library before it opened. She had been doing this for three years. The librarian, who had known her since she was eight, always left a small pile of books at her usual table. Kavya believed that reading was not merely a habit: it was the most honest way she knew of understanding the world. If she could have one wish, she would ask for more hours in the day.'
There are twelve tenses in English grammar, organised across three time frames (present, past, future) and four aspects (simple, continuous, perfect, perfect continuous).
Modals in English grammar are auxiliary verbs that express possibility, ability, permission, obligation, necessity, or deduction. The primary modals in English grammar are: can, could, may, might, shall, should, will, would, must, ought to, need, dare, and used to.
In English grammar active and passive voice, the active voice places the subject as the performer of the action ('The teacher explained the lesson') and the passive voice places the subject as the receiver of the action ('The lesson was explained by the teacher').
Articles in English grammar are the three words 'a', 'an' and 'the'. 'A' and 'an' are indefinite articles used before nouns that are non-specific or mentioned for the first time. 'The' is the definite article used before specific or previously identified nouns.
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