Compound modifiers are consist of two words connected by a hyphen which act together like an adjective and modify a noun.
Compound Modifiers Rule
a/an + number + hyphen + noun + noun
Explanation:
According to the above structure, the noun preceded by number should be used in a singular form because it functions as an adjective.
Look at the examples below.
- We live in a three-floor building. Our building has three floors.
- My cousin bought a five-room house. My cousin`s house has five rooms.
- This is a four-window room. This room has four windows.
Remember: If the last noun is plural, the use of indefinite articles “a/an” is not necessary.
Look at the examples below.
- There are many three-floor buildings in Texas.
- Many buildings in Texas have three floors.
- These are two-window rooms.
- Each of these rooms has two windows.
- Teachers usually make two-student groups in a conversation class.
- In a conversation class, each group consists of two students.
Exercise:
Choose the correct option.
1- Learn ESL Academy really needs _______________________ nowadays.
- a- a twenty-classes room building
- b- a twenty-class rooms building
- c- a twenty-class room building
2- If you would like to rent _________________________ in Texas, you will have to pay around US$400 per month.
- a- A three-rooms apartment house
- b- a-three room apartment house
- c- a three-room apartment house
3- I bought ___________________________ yesterday.
- a- a hundred-page book
- b- a hundred page-book
- c- a hundred-pages book
4- These are ____________________ in our house.
- a- a two-window rooms
- b- four-window rooms
- c- three-windows rooms
5- They live in _________________________.
- a- A five-story building
- b- a five story building
- c- a five-story building
6- We have ___________________ in our living room.
- a- three-shelf locker
- b- a three-shelf locker
- c- a three-shelf lockers
Answers:
- C- a twently-class room building
- C-a three-room apartment house
- A- a hundred-page book
- B- four-window rooms
- C- a finve-story building
- B-a three-shelf locker
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