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Business Communications >Unit 03 >Chapter 06 >Grammar/Mechanics Checkup 6: Commas 1

Grammar/Mechanics Checkup 6: Commas 1

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Author: Ryan Smith

Choose the correct comma placement.

If Mr. Ellis doesn't give me a call by , I think I will ask someone else to do the project.

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Sentences that open with dependent clauses (often introduced by words such as “since,” “when,” “if,” “as,” “although,” and “because”) require commas to separate them from the main idea.

Which of the following sentences is correctly punctuated?

  • As, I walked down the street I saw someone I worked with five years ago.
  • As I walked down the street, I saw someone I worked with five years ago.
  • As I walked down the street I saw someone I worked with, five years ago.

View Explanation

Sentences that open with dependent clauses (often introduced by words such as “since,” “when,” “if,” “as,” “although,” and “because”) require commas to separate them from the main idea.

Choose the correct comma placement.

After I got my pilot's , I was scared during my first solo flight.

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Sentences that open with dependent clauses (often introduced by words such as “since,” “when,” “if,” “as,” “although,” and “because”) require commas to separate them from the main idea.

Which of the following sentences is correctly punctuated?

  • I don't know when the vendor will visit again, and we need more supplies for the office.
  • I don't know when the vendor will visit again and we need more supplies for the office.
  • I don't know when the vendor will visit again and, we need more supplies for the office.
View Explanation

In this sentence, “and” is one of the seven coordinating conjunctions (for, and, nor, but, or, yet, so). A coordinating conjunction links two independent clauses. An independent clause is a word group that contains a subject and a verb and that can stand alone as a complete sentence. If you write two independent clauses with a coordinating conjunction between them, place a comma before the conjunction.

Which of the following sentences is correctly punctuated?

  • The new office phone, which has ten new dial features, will be installed on Tuesday.
  • The new office phone, which has ten new dial features will be installed on Tuesday.
  • The new office phone which has ten new dial features, will be installed on Tuesday.

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“Which has ten new dial features” is an internal sentence interrupter. It adds an additional idea and does not significantly change or contribute to the main idea of the sentence. Set off internal sentence interrupters from the rest of the sentence with commas.

Which of the following sentences is correctly punctuated?

  • The team met late on Tuesday, and reconvened on Wednesday.
  • The team met late on Tuesday and reconvened on Wednesday.
  • The team met late on Tuesday and, reconvened on Wednesday.

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Before inserting a comma, test the two clauses. Are they both independent? Does each include a subject, a verb, and a complete thought? If an independent clause is followed by a dependent clause, no comma is necessary.

Choose the correct comma placement.

am an investor in the company, you need to address my concerns.

View Explanation

In this sentence, “and” is one of the seven coordinating conjunctions (for, and, nor, but, or, yet, so). A coordinating conjunction links two independent clauses. An independent clause is a word group that contains a subject and a verb and that can stand alone as a complete sentence. If you write two independent clauses with a coordinating conjunction between them, place a comma before the conjunction.

Which of the following sentences is correctly punctuated?

  • I live in Los Angeles California but work in Tempe Arizona.
  • I live in Los Angeles, California, but work in Tempe, Arizona.
  • I live in Los Angeles California, but work in Tempe, Arizona.

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When you write a city and state in the middle of a sentence, always use a comma after both the city and the state.

Which of the following sentences is correctly punctuated?

  • Although I was late getting to the office, I still got all my work done.
  • Although, I was late getting to the office I still got all my work done.
  • Although I was late getting to the office I still got all my work done.

View Explanation

Sentences that open with dependent clauses (often introduced by words such as “since,” “when,” “if,” “as,” “although,” and “because”) require commas to separate them from the main idea.

Identify which rule applies to the following sentence.

To maintain a good work ethic, one must commit to excellence.

  • Place a comma after a dependent clause.
  • Avoid unnecessary commas.
  • Use a comma after an introductory phrase including infinitive phrases.

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