Singular possessive:only one Jack owns the canary.
The form "Jacks" is the plural form of the proper noun "Jack".The possessive form of the singular noun "Jack" is Jack's.Examples:There are two Jacks in my class. (plural)Jack's decision pleased his parents. (possessive)
The possessive noun for the singular word canary is canary's, e.g. "The canary's seed dish".The possessive plural form for many canaries would be canaries', e.g. "The canaries' seed dishes".
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is inches. The plural possessive is inches'.
The singular possessive form is canary's.
The plural possessive of "Father" is, "Fathers"