The correct form is "The well-known author published a new book," using a hyphen to connect the compound adjective "well-known."
What is the part of speech for "excited"?
Identify the sentence with the correct use of the comma:
What is the part of speech for "blessing"?
Identify the pronoun in the sentence: "We are going to the party."
In the sentence, "The sun sets beautifully," what is "beautifully"?
In the sentence "My cat, with the fluffy tail, is sleeping," what is the parenthetical element?
What is the part of speech for "beyond"?
Choose the adverb in the sentence: "He ate his dinner quickly."
Identify the sentence with correct use of the ellipsis:
Choose the sentence with correct use of the hyphen: