Watch out! In English, unlike Dutch, almost all nouns that end in the vowels a, i, o or u form their plural by simply adding an -s. Don’t be tempted to put in an apostrophe. For example:
The only exceptions are i’s (as in dotting the i’s) and do’s (as in the do’s and don’ts). Here the apostrophe helps to prevent confusion (particularly with is).
Some nouns that end in a consonant + o, however, add -es. For example, potatoes, tomatoes, volcanoes, cargoes.
© 2014 Baxter Publishing, Hilversum, The Netherlands