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100
The double glazing is still leaking. Can you call that double glazing salesman?
The double glazing is still leaking. Can you call that double-glazing salesman? (functioning as an adjective)
100
That was a badly punctuated sentence.
No hyphen, compound modifier starts with an adverb ending in 'ly'.
100
Maddie is an extremely overworked mother.
No hyphen, extremely is not describing mother.
200
A temporary loss of hearing can result from exposure to ear splitting music at concerts. Experts suggest using earplugs to protect your ears.
A temporary loss of hearing can result from exposure to ear-splitting music at concerts. Experts suggest using earplugs to protect your ears.
200
You call this silver service? She's not a trained silver service waitress.
You call this silver service? She's not a trained silver-service waitress.
200
Can you believe that she bought first class tickets?
Can you believe that she bought first‐class tickets?
300
My cousin, who is twenty years old, took my three month old niece to the movies.
My cousin, who is twenty years old, took my three-month-old niece to the movies.
300
A two to three day forecast would help him plan.
A two-to-three-day forecast would help him plan.
300
The municipal government is funding a community based education system.
The municipal government is funding a community-based education system.
400
This presidential candidate is not well known.
No hyphen, compound modifier after the noun.
400
Coffee shops are now incorporating a drivein.
Coffee shops are now incorporating a drive-in.
400
After a heavy downpour, some residents had to contend with knee deep water in their basements.
After a heavy downpour, some residents had to contend with knee-deep water in their basements.
500
Writing tutors often undergo extra training to help non English speaking students improve their writing skills.
Writing tutors often undergo extra training to help non-English-speaking students improve their writing skills.
500
The completion of the Panama Canal in 1914, the culmination of a ten year project, ushered in a new age of shipping and trade.
The completion of the Panama Canal in 1914, the culmination of a ten-year project, ushered in a new age of shipping and trade.
500
Wind powered generators can be excellent sources of electricity.
Wind-powered generators can be excellent sources of electricity.
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