To form a plural possessive, you add an apostrophe if the plural ends with s, or an apostrophe + s otherwise. So, for your examples, it's The Beatles' and the boys', because those are both plurals, but it's James's, because James is a singular name.
Oct 7, 2018
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How do you use an apostrophe when the word ends with an S?
1. The possessive. Quick Use: Use an apostrophe + s for singular nouns (sea, sky), common nouns ending with s (tigress, mistress), and irregular plural nouns (women, children). Use only the apostrophe for proper nouns ending with s (Tess, Jesus, Texas) and regular plural nouns (cars, protestors).
Is Gus's correct grammar?
The Chicago Manual of Style: "Gus's car." The Associated Press Stylebook (AP): "Gus' car." That is to say, the choice is yours unless you work, publish, or go to school somewhere with an in-house style book that dictates which way it is to be done.
How to make plural a word that ends with s?
For a singular noun ending in s, x, ch, sh, or z, add es to form the plural. e.g., virus—viruses tax—taxes match—matches dish—dishes business—businesses sketch—sketches Note: When the ch sounds like a k, just add an s.
How To Make Words That End In “S” Possessive | Thesaurus.com
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Jul 10, 2020 · In general, you form a possessive singular noun (both proper and common) by adding an apostrophe and the letter S to the end of the word.
Rule 2: To show plural possession of a word ending in an s or s sound, form the plural first; then immediately use the apostrophe.
Add an 's' to form the plural of shortened forms such as acronyms and initialisms. Don't write an apostrophe before the 's'. The same rule applies when making ...