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Usually only when they begin the sentence.

He stepped on a branch while he was walking across the yard (no comma).

While he was walking across the yard, he stepped on a branch (comma)

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11y ago

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Related Questions

Is an introductory comma is used after an interjection and participial phrase?

No, an introductory comma is not typically used after an interjection or participial phrase. Commas are usually used after introductory clauses or phrases to separate them from the main clause, but for interjections and participial phrases, a comma is not necessary in most cases.


Are commas used to enclose restrictive phrases and clauses?

No, commas are not used to enclose restrictive phrases and clauses. Restrictive phrases and clauses provide essential information about the noun they are modifying and should not be separated by commas.


What are adverb clauses?

Adverb clauses are the main verb and the helping verb used together.


What is a punctuation mark that is used between clauses of a compound sentence when a conjunction is not used?

The semicolon is used, often with a conjunctive adverb, or between independent clauses. A semicolon is also used between words in a series when parts of the series contain commas.


When are commas used?

Commas are used to separate items in a list, to separate independent clauses in a compound sentence, to set off introductory phrases or clauses, and to offset nonessential information.


How are commas used in clauses?

Commas are used in clauses to separate extra information from the main clause, such as with appositives or nonessential clauses. They can also be used to separate items in a list within a clause. Additionally, commas can set off introductory phrases or clauses at the beginning of a sentence.


Should a semicolon be used to separate two phrases if one of them contains commas at all not just in a list?

A semicolon should be used to separate two independent clauses, especially if the clauses are closely related. Using a semicolon can help clarify the relationship between the ideas presented in each clause, even if one of the clauses contains commas within it.


What punctuation is used to set off nonrestrictive clauses and phrases?

Nonrestrictive clauses and phrases are set off by commas. These commas separate additional information that is not necessary for the sentence's meaning but provides extra details.


What is the difference between an indepent clause and a depent claues?

Commas are used differently when a clause is an independent clauses or if the clause is a dependent/subordinate clauses.


When an subordinate clause is used as an adjective when should you use a comma?

Use commas to separate clauses.


Can when be an adverb?

Yes, but it is often a conjunction used in restrictive clauses (e.g. when we leave). It is used alone as an adverb in questions such as "When do we leave?"


Is often a conjunction?

No, "often" is an adverb used to describe the frequency of an action. It is not a conjunction used to connect clauses or sentences.