We use apostrophes (‘) in two important ways.
- a. To show where we have left letters out of a contracted form.
can’t ( = cannot) she’s ( = she Is) I’d ( = I would)
b. In possessive forms of nouns.
the girl’s father Charles’s wife three miles’ walk
We do not use apostrophes in plurals, possessive determiners (except one’s) or possessive pronouns.
- blue jeans (NOT blue jean’s)
The dog wagged its tail (NOT . . . H’s tatb)
This is yours. (NOT . . . your’s.)