Final answer:
The statement given is false; hyphens are used with compound modifiers before a noun but not necessarily when words are simply repeated. Hyphen placement depends on whether the words form a single thought to modify the noun, and not their repetition in the sentence.
Step-by-step explanation:
The statement, "If words are repeated to form a one-thought idea or modifier, hyphen those words wherever the expression occurs in the sentence," is false. Hyphens are used to join two or more words serving as a single modifier before a noun to clarify their relationship to the noun they are modifying. However, hyphens are not typically used simply because words are repeated; repetition itself does not necessitate the use of hyphens.
Use hyphens with modifiers when words work together to describe a noun, forming a compound modifier. For example, in the sentence 'She is a well-known author,' 'well-known' is a compound modifier describing 'author' and therefore uses a hyphen. Similarly, 'chocolate-covered peanuts' demonstrates that 'chocolate-covered' is a compound modifier for 'peanuts.'
On the other hand, 'The old manor house was covered with creeping green Wisteria' does not require hyphens because 'creeping' and 'green' are separate modifiers for 'Wisteria'. When the compound modifiers come after the noun or when each word modifies the noun separately, hyphens are not used.