Comma usage
58 flashcards covering Comma usage for the ACT English & Reading section.
Commas are punctuation marks that help organize sentences by separating ideas, lists, or clauses, making your writing clearer and more precise. For example, they can set off introductory phrases, separate items in a series, or divide independent clauses in a compound sentence. Mastering comma usage is essential because it ensures your writing is grammatically correct and easy to understand, which is a key skill tested in English exams.
On the ACT English section, comma questions often appear as multiple-choice items where you identify the correct placement in sentences or choose between options with subtle differences. Common traps include overusing commas in compound sentences, forgetting them in nonrestrictive clauses, or misplacing them in introductory elements, which can lead to run-on sentences or fragments. Focus on rules like the serial comma, separating coordinate adjectives, and using commas with conjunctions to connect ideas effectively.
Remember to read the full sentence before deciding on comma placement.
Terms (58)
- 01
Comma in a series
A comma separates three or more items in a list to make the sequence clear and prevent confusion.
- 02
Oxford comma
The Oxford comma is the comma used after the penultimate item in a list of three or more items, before 'and' or 'or', to avoid ambiguity in some cases.
- 03
Comma before coordinating conjunction
Use a comma before a coordinating conjunction like 'and', 'but', or 'or' when it joins two independent clauses in a compound sentence.
- 04
Comma after introductory phrase
A comma follows an introductory phrase or clause at the beginning of a sentence to separate it from the main clause and improve readability.
- 05
Comma with nonrestrictive clauses
Commas set off nonrestrictive clauses, which provide extra information that is not essential to the meaning of the sentence, allowing them to be removed without altering the core idea.
- 06
Comma with restrictive clauses
Do not use commas with restrictive clauses, as they are essential to the meaning of the sentence and provide information that defines the noun.
- 07
Comma splice
A comma splice is an error where two independent clauses are joined only by a comma without a coordinating conjunction, creating a run-on sentence.
- 08
Fused sentence
A fused sentence occurs when two independent clauses are joined without any punctuation, which can be confused with comma splice errors on the test.
- 09
Commas in dates
In dates, use a comma after the day and after the year in a full date, such as 'July 4, 1776, was important.'
- 10
Commas in addresses
Commas separate the elements of an address, such as between the street and city, and between the city and state, to clarify the structure.
- 11
Comma with direct address
Use commas to set off a name or title when directly addressing someone in a sentence, like 'John, please come here.'
- 12
Comma in quotations
A comma is placed inside the quotation marks when introducing or interrupting quoted speech, such as 'She said, "Hello," and left.'
- 13
Commas with appositives
Commas set off appositives, which are phrases that rename or explain a noun, if they are nonessential; essential appositives do not use commas.
- 14
Essential appositive
An essential appositive provides necessary information to identify the noun and is not set off by commas, unlike nonessential ones.
- 15
Nonessential appositive
A nonessential appositive adds extra, non-defining information about a noun and is always set off by commas.
- 16
Commas with interrupting phrases
Commas surround interrupting phrases that provide additional but nonessential information within a sentence, maintaining smooth flow.
- 17
Comma before 'which'
Generally, use a comma before 'which' when introducing a nonrestrictive clause, but not before 'that' in restrictive clauses.
- 18
Comma before 'that'
Do not use a comma before 'that' when it introduces a restrictive clause, as it is integral to the sentence's meaning.
- 19
Unnecessary comma in compound sentence
Avoid placing a comma between a subject and verb or before a coordinating conjunction in a simple sentence, as it creates an error.
- 20
Comma with adjectives
Use a comma between two or more adjectives that equally modify the same noun, but not if one adjective directly modifies another.
- 21
Serial comma in complex lists
In lists with items that contain commas, use the serial comma to clearly separate each element and avoid confusion.
- 22
Commas in numbers
In large numbers, commas separate groups of three digits, such as 1,000, to make them easier to read.
- 23
Commas in dialogue tags
Commas separate dialogue from speaker tags, like 'I am tired,' she said, to properly attribute the speech.
- 24
Comma with 'however'
Use commas to set off 'however' when it interrupts a sentence or starts one, indicating contrast.
- 25
Comma after interjections
A comma follows interjections like 'Oh' or 'Well' at the beginning of a sentence to separate them from the main clause.
- 26
Commas in compound predicates
Do not use a comma between elements of a compound predicate unless they are independent clauses.
- 27
Commas in elliptical clauses
In elliptical clauses, where words are omitted for brevity, commas may be used to indicate the omission and maintain clarity.
- 28
Comma with participial phrases
A comma follows a participial phrase at the beginning of a sentence to separate it from the main clause.
- 29
Comma in absolute phrases
Commas set off absolute phrases, which modify the entire sentence and often include a noun and participle.
- 30
Commas separating items with internal commas
When list items contain commas, use semicolons instead to separate the items and avoid confusion.
- 31
Comma in letter salutations
In formal letters, a comma follows the salutation, such as 'Dear John,'.
- 32
Comma in letter closings
A comma follows the closing phrase in a letter, like 'Sincerely,' before the signature.
- 33
Commas with titles and names
Use commas to separate a name from a title that follows it, such as 'John Smith, PhD.'
- 34
Comma before 'too' for addition
Sometimes use a comma before 'too' when it means 'also' at the end of a sentence, though it's optional in modern usage.
- 35
Commas in comparisons
Commas are not needed in simple comparisons with 'than' or 'as,' but may be used in more complex structures for clarity.
- 36
Comma with 'not only but also'
No comma is typically needed with 'not only but also' unless it separates independent clauses.
- 37
Commas in conditional clauses
Use a comma after an introductory conditional clause, like 'If it rains, we will stay home.'
- 38
Comma with adverbial clauses
A comma follows an adverbial clause at the beginning of a sentence if it is nonessential.
- 39
Common trap: Comma after 'and'
Avoid placing a comma directly after 'and' in a list or compound sentence, as it is usually unnecessary.
- 40
Strategy for identifying comma errors
Read the sentence aloud to check if pauses align with commas, ensuring they separate elements correctly without creating run-ons.
- 41
When to omit commas
Omit commas in restrictive clauses, between compound predicates, or when they would disrupt the sentence's flow.
- 42
Commas with repeated elements
Use commas to separate repeated words or phrases for emphasis, but only if they form a list or series.
- 43
Commas in series of adjectives
Place a comma between coordinate adjectives in a series, but not between the last adjective and the noun.
- 44
Commas with coordinate adjectives
Coordinate adjectives, which can be rearranged or connected with 'and,' are separated by commas.
- 45
Commas with cumulative adjectives
Do not use commas with cumulative adjectives, which build upon each other to modify the noun.
- 46
Subtle nonessential elements
In advanced sentences, identify subtle nonessential elements by checking if removing them changes the core meaning; use commas accordingly.
- 47
Comma placement in questions
In direct questions within a sentence, use commas to separate them if they are not the main clause.
- 48
Commas in exclamations
A comma can follow an exclamatory word or phrase if it interrupts the sentence, but exclamations typically end with an exclamation point.
- 49
Commas with foreign words
Use commas to set off foreign words or phrases if they are nonessential interruptions in the sentence.
- 50
Commas in parenthetical expressions
Commas surround parenthetical expressions that add supplementary information without altering the sentence's main meaning.
- 51
Example of correct comma use
In the sentence 'After eating, we went for a walk,' the comma correctly follows the introductory phrase.
- 52
Common ACT comma error: Overuse
Overusing commas can create errors by incorrectly separating essential elements, so only add them where they are grammatically required.
- 53
Comma in complex sentences
In complex sentences, use commas to separate dependent clauses from independent ones when the dependent clause comes first.
- 54
Comma with conjunctions in lists
A comma precedes the conjunction in a list, but ensure it's not omitted in cases where clarity is needed.
- 55
Avoiding comma between subject and verb
Never place a comma between the subject and verb of a sentence, as it disrupts the basic structure.
- 56
Comma in introductory adverb clauses
A comma follows an introductory adverb clause to clearly link it to the main clause.
- 57
Commas with transitional phrases
Use commas to set off transitional phrases like 'on the other hand' when they interrupt the sentence.
- 58
Strategy for comma in long sentences
In long sentences, break them into natural pauses with commas, but avoid adding them where they create fragments.