Do you put dashes between year old?
Year old should be hyphenated when it modifies a noun that follows it. That is, when the phrase is describing the age of a person, place, or thing, and it precedes that noun in a sentence, then it should be written as year-old.
How do you use dashes?
DashesTo set off material for emphasis. Think of dashes as the opposite of parentheses. To indicate sentence introductions or conclusions. To mark “bonus phrases.” Phrases that add information or clarify but are not necessary to the meaning of a sentence are ordinarily set off with commas. To break up dialogue.
Is four year old hyphenated?
Thus, “four-year-old” is hyphenated as a multi-word, single descriptor preceding a noun. The descriptions “too-tall-to-tango” and “bramble-covered” are also correctly hyphenated in sentence 6 because they precede the nouns they modify.
How do you hyphenate ages?
So to sum up, you hyphenate an age when it’s a noun or when it’s a modifier that comes before a noun. The main time you don’t hyphenate an age is when it comes after the noun it modifies. Ages are like every other compound modifier that way: you hyphenate them before the noun but not after the noun.
When should you write numbers?
Numbers up to nine should always be written in words, anything higher than nine can be written in numerals. Alternatively, some guides suggest that if you can write the number in two words or fewer then use words rather than numerals.