The explanation of the use of commas in numbers 4, 5, and 6 is given below:
A comma is used after an introductory word group and this is to show its relativity in a given sentence as you introduce the word group such as: "After a long rain delay," which shows the next action that occurs after the long rain delay.
A comma is also used between coordinate adjectives as we can see in the given example: "Ulysses is a long, difficult book" as this shows the description of the type of a book and contains two qualities: long and difficult.
What is a Comma?
This refers to the punctuation that is used in order to separate items in a given list or indicate a pause.
Hence, we can see that The explanation of the use of commas in numbers 4, 5, and 6 is given below:
A comma is used after an introductory word group and this is to show its relativity in a given sentence as you introduce the word group such as: "After a long rain delay," which shows the next action that occurs after the long rain delay.
A comma is also used between coordinate adjectives as we can see in the given example: "Ulysses is a long, difficult book" as this shows the description of the type of a book and contains two qualities: long and difficult.
Read more about commas here:
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