Usage of hyphens in English:
1. Used to break sentences
When words cannot be written in one line and need to be broken, they need to be used. hyphen. It is generally used when transitioning, but breaking words will cause difficulty in reading words, so pay attention when using hyphens to break words:
Monosyllabic words, numerals, abbreviations Words with hyphens cannot be separated, such as near. If a word can be separated, it must be easy to pronounce when separated. For example, when entitle is separated from a word, it must be broken into en-title, not into enti-tle.
2. Used for compound words
When forming compound words, hyphens are also indispensable. There are many rules for forming compound words with hyphens. For example, an adjective and a noun form an adjective. New adjectives should also be hyphenated (first-class).
When an adverb and a past participle form a new adjective, a hyphen (well-equipped) is also used; when expressing a kinship relationship, a hyphen (father-in-law) is also used.
Note: With the widespread use of compound words, some compound words have gradually become words without hyphens. For example, non-smoker means "non-smoker", but now nonsmoker can also express the same meaning.
Extended information:
Between the compound modifiers used as attributives before the noun, a hyphen should generally be added. Such as: Jim is a 15-year-old boy. Jim is a boy of fifteen. ?
Usually hyphens should be added between the parts of compound words with self-, ex-, half-, quarter-, and all- as affixes, such as: self-control (self-made), self-respect ( self-esteem), ex-president (former president).
Hyphens can be used to join compound words consisting of a single capital letter and a noun or participle. Such as: an X-ray photograph (an X-ray photograph), V-shaped thing (V-shaped thing).
Hyphens can be used to connect compound numbers from 21 to 99. Such as: thirty-nine (39), fifty-one (51), eighty-eight (88). ?
A hyphen can be used between the numerator and denominator of a written fraction, especially when the fraction is used as a modifier. For example: a three-fourths majority.