English Grammar
Covers essential English grammar rules, usage distinctions, and sentence structure for students and writers.
Cards · 102
- Subject-Verb Agreement
- A singular subject takes a singular verb, while a plural subject takes a plural verb.
- Subject-Verb Agreement with 'Neither / Nor'
- The verb agrees with the subject closest to it in the sentence.
- Indefinite Pronouns Agreement (Everyone, Somebody, Each)
- Pronouns like 'everyone', 'each', and 'somebody' take singular verbs.
- Collective Nouns Agreement
- Singular when the group acts as a single unit; plural when individual members act separately.
- A vs. An
- Use 'a' before words starting with consonant sounds and 'an' before vowel sounds.
- Fewer vs. Less
- Use 'fewer' for countable items and 'less' for uncountable quantities or degrees.
- Much vs. Many
- Use 'many' with countable plural nouns and 'much' with uncountable singular nouns.
- Amount vs. Number
- Use 'number' for things that can be counted individually and 'amount' for bulk quantities.
- Who vs. Whom
- Use 'who' as the subject of a clause and 'whom' as the object of a verb or preposition.
- That vs. Which (Restrictive vs. Non-restrictive)
- Use 'that' for essential restrictive clauses and 'which' with commas for non-essential clauses.
- Lie vs. Lay
- 'Lie' means to recline and takes no object; 'lay' means to place something and takes a direct object.
- Rise vs. Raise
- 'Rise' is intransitive meaning to go up on one's own; 'raise' is transitive and requires a direct object.
- Sit vs. Set
- 'Sit' is intransitive meaning to be seated; 'set' is transitive meaning to place an object.
- Its vs. It's
- 'Its' is the possessive pronoun; 'it's' is the contraction for 'it is' or 'it has'.
- Their vs. There vs. They're
- 'Their' indicates possession, 'there' indicates location or existence, and 'they're' means 'they are'.
- Your vs. You're
- 'Your' is a possessive adjective; 'you're' is the contraction of 'you are'.
- Whose vs. Who's
- 'Whose' indicates possession; 'who's' is the contraction of 'who is' or 'who has'.
- Affect vs. Effect
- 'Affect' is typically a verb meaning to influence; 'effect' is usually a noun meaning a result.
- Complement vs. Compliment
- 'Complement' means to complete or enhance; 'compliment' refers to praise or flattery.
- Principal vs. Principle
- 'Principal' means chief, main, or a school head; 'principle' refers to a fundamental rule or truth.
- Stationary vs. Stationery
- 'Stationary' means not moving; 'stationery' refers to writing materials and paper.
- Farther vs. Further
- Use 'farther' for measurable physical distance and 'further' for metaphorical distance or advancement.
- Comprise vs. Compose
- The whole comprises the parts; parts compose the whole. Never say 'is comprised of'.
- Continuous vs. Continual
- 'Continuous' means uninterrupted in time; 'continual' means frequently recurring with interruptions.
- Dangling Modifiers
- A modifying phrase must logically and clearly attach to the subject immediately following it.
- Misplaced Modifiers
- Place modifiers as close as possible to the words they modify to prevent unintended meanings.
- Squinting Modifiers
- Avoid placing an adverb where it could modify either the word before it or the word after it.
- Parallel Structure
- Items in a list, series, or comparison must share the exact same grammatical pattern.
- Run-on Sentences (Fused Sentences)
- Two independent clauses cannot be joined without punctuation or a coordinating conjunction.
- Comma Splice
- Two independent clauses cannot be joined solely by a comma; use a semicolon or coordinating conjunction.
- Sentence Fragments
- A complete sentence must contain at least one independent clause with a subject and finite verb.
- FANBOYS (Coordinating Conjunctions)
- For, And, Nor, But, Or, Yet, So connect equal grammatical units; use a comma before them when joining clauses.
- Oxford (Serial) Comma
- The optional comma placed immediately before the coordinating conjunction in a series of three or more items.
- Semicolon Usage
- Links two closely related independent clauses not joined by a coordinating conjunction.
- Colon Usage
- Introduces a list, quote, or explanation following a grammatically complete independent clause.
- Em Dash Usage
- Used to create an emphatic pause, break in thought, or set off parenthetical information.
- Hyphen in Compound Modifiers
- Hyphenate two or more words acting as a single modifier when they precede the noun they modify.
- Apostrophe for Plural Nouns Ending in -s
- Form possession for plural nouns ending in -s by adding only an apostrophe at the end.
- Apostrophe for Singular Nouns Ending in -s
- Most style guides form the possessive by adding an apostrophe and an s (e.g., James's).
- Joint vs. Separate Possession
- Add 's only to the final name for shared ownership; add 's to both names for individual ownership.
- Past Simple vs. Present Perfect
- Use past simple for completed actions at specific past times; use present perfect for ongoing or unspecified times.
- Subjunctive Mood for Counterfactuals
- Use 'were' instead of 'was' in conditional clauses expressing wishes or hypothetical scenarios.
- Conditional Sentences (Zero)
- Expresses general truths and scientific facts using present simple in both the 'if' and main clauses.
- Conditional Sentences (First)
- Expresses real future possibilities using 'if' + present simple, followed by 'will' + base verb.
- Conditional Sentences (Second)
- Expresses unreal or hypothetical situations using 'if' + past simple, followed by 'would' + base verb.
- Conditional Sentences (Third)
- Expresses regret or unreal past events using 'if' + past perfect, followed by 'would have' + past participle.
- Split Infinitives
- Placing an adverb between 'to' and the verb is acceptable in modern usage if it improves clarity.
- Ending a Sentence with a Preposition
- Permissible and natural in modern English, especially when avoiding unnatural or stiff phrasing.
- Double Negatives
- Using two negative words within the same clause cancels the negation, creating an unintended positive.
- Since vs. Because
- 'Because' expresses cause and effect; 'since' primarily marks time, though casual usage allows both.
- E.g. vs. I.e.
- 'E.g.' means 'for example' (exempli gratia); 'i.e.' means 'that is' or 'in other words' (id est).
- Between vs. Among
- Use 'between' for distinct, individual items; use 'among' for items in an undefined group or collective mass.
- Mixed Conditionals
- Combine a past condition with a present outcome or a ongoing condition with a past outcome.
- Active vs. Passive Voice
- In active voice the subject performs the action, while in passive voice the subject receives the action.
- Accept vs. Except
- Use 'accept' as a verb meaning to receive and 'except' as a preposition meaning excluding.
- Ensure vs. Insure vs. Assure
- 'Ensure' means make certain, 'insure' relates to financial protection, and 'assure' means remove someone's doubt.
- Advice vs. Advise
- Use 'advice' as an uncountable noun and 'advise' as the verb meaning to give counsel.
- Breathe vs. Breath
- Use 'breathe' as the verb for inhaling and exhaling, and 'breath' as the noun for the air inhaled.
- Lose vs. Loose
- Use 'lose' as a verb meaning to misplace, and 'loose' as an adjective meaning not tight or unbound.
- Discreet vs. Discrete
- Use 'discreet' to mean careful and unobtrusive, and 'discrete' to mean distinct, separate, or unconnected.
- Emigrate vs. Immigrate
- Use 'emigrate' when leaving one's country and 'immigrate' when settling permanently into a new one.
- Allusion vs. Illusion
- An 'allusion' is an indirect reference, whereas an 'illusion' is a deceptive appearance or false impression.
- Capital vs. Capitol
- Use 'capital' for wealth, uppercase letters, or primary cities; use 'capitol' for the specific legislative building.
- Elicit vs. Illicit
- Use 'elicit' as a verb meaning to draw forth, and 'illicit' as an adjective meaning illegal or forbidden.
- Ingenious vs. Disingenuous
- 'Ingenious' means clever or inventive, while 'disingenuous' means deceitful, insincere, or hypocritical.
- Historic vs. Historical
- Use 'historic' for events of great importance and 'historical' for anything pertaining to history or the past.
- Beside vs. Besides
- Use 'beside' to mean next to or at the side of, and 'besides' to mean in addition to or moreover.
- Everyday vs. Every Day
- Use 'everyday' as an adjective meaning routine or ordinary, and 'every day' as an adverbial phrase meaning daily.
- Into vs. In To
- Use 'into' for movement or transformation, and 'in to' when 'in' forms part of a phrasal verb before 'to'.
- Onto vs. On To
- Use 'onto' for moving toward a surface, and 'on to' when 'on' belongs to a verb or means onward.
- Alot vs. A Lot vs. Allot
- 'A lot' means a large amount, 'allot' means to distribute portions, and 'alot' is an incorrect nonstandard spelling.
- Borrow vs. Lend
- Use 'borrow' when taking something temporarily and 'lend' when giving something temporarily to someone else.
- Gerund vs. Present Participle
- Both end in -ing, but a gerund functions as a noun while a participle functions as a verb or adjective.
- Possessive Nouns Preceding Gerunds
- Use a possessive noun or pronoun before a gerund to show who or what is performing the action.
- Transitive vs. Intransitive Verbs
- Transitive verbs require a direct object to complete their meaning, while intransitive verbs do not.
- Stative Verbs vs. Dynamic Verbs
- Dynamic verbs express actions and take continuous tenses; stative verbs express states and usually do not.
- Predicate Adjectives vs. Predicate Nouns
- A predicate adjective modifies the subject after a linking verb; a predicate noun renames the subject.
- Linking Verbs
- Verbs like 'seem', 'be', or 'taste' that connect the subject to a subject complement rather than showing action.
- Reflexive vs. Intensive Pronouns
- Reflexive pronouns refer back to the subject for meaning; intensive pronouns only add emphasis and can be removed.
- Reciprocal Pronouns (Each other vs. One another)
- Use 'each other' when referring to two individuals and 'one another' when referring to three or more.
- Demonstrative Pronouns vs. Demonstrative Adjectives
- Pronouns ('this', 'that') stand alone, whereas demonstrative adjectives directly modify an accompanying noun.
- Correlative Conjunctions
- Conjunction pairs like 'either/or' or 'both/and' that connect grammatically equal sentence elements.
- Subordinating Conjunctions
- Words like 'although', 'because', and 'unless' that link a dependent clause to an independent clause.
- Conjunctive Adverbs
- Adverbs like 'however' or 'therefore' used with a semicolon and comma to transition between two main clauses.
- Inverted Sentence Structure
- Placing the verb or auxiliary verb before the subject, often used after negative adverbs for emphasis.
- Dummy Pronouns (Expletives 'There' and 'It')
- Words occupying the subject position without real semantic content, shifting the actual subject after the verb.
- Parenthetical Elements
- Extra non-essential information set off by commas, dashes, or parentheses that can be omitted without loss of meaning.
- Appositives
- A noun or noun phrase placed next to another word to rename or explain it, often enclosed by commas.
- Elliptical Clauses
- Clauses where words are intentionally omitted because the missing words are easily understood from context.
- Cumulative vs. Coordinate Adjectives
- Coordinate adjectives require commas and can be reordered; cumulative adjectives build meaning in order without commas.
- Order of Adjectives
- Typical sequence: quantity, opinion, size, physical quality, shape, age, color, origin, material, type, purpose.
- Comparative vs. Superlative Adjectives
- Use comparative (-er or 'more') for two entities; use superlative (-est or 'most') for three or more entities.
- Absolute Adjectives
- Adjectives like 'unique', 'perfect', and 'dead' that represent binary states and cannot logically take degrees.
- Countable vs. Uncountable Nouns
- Countable nouns have plural forms and take 'a/an'; uncountable nouns lack plurals and denote masses or abstractions.
- Irregular Plural Nouns
- Nouns that do not form plurals with -s or -es, changing vowels ('foot'/'feet') or retaining the base ('sheep').
- En Dash Usage
- Punctuation mark used predominantly to indicate spans of time, ranges of numbers, or compound connections.
- Brackets vs. Parentheses
- Use parentheses for supplemental author notes; use brackets for editor additions or changes within direct quotes.
- Ellipsis Usage
- Three spaced or unspaced dots indicating an omission of words from a quote or a pause in thought.
- Punctuation with Quotation Marks (US Style)
- Commas and periods are placed inside the closing quotation marks, regardless of sentence logic.
- Punctuation with Quotation Marks (UK Style)
- Commas and periods are placed inside only if they belong to the quoted material, otherwise outside.
- Slash (Virgule) Usage
- Used to denote alternatives ('and/or'), fractions, line breaks in quoted poetry, or paired relationships.
- Whether vs. If
- Use 'whether' when presenting two alternatives or choices and 'if' for conditional clauses.