Dear sir Madam,
Are there any rules to guide us when to put an E at the end of a word or not to add anything?
I would really appreciate it if you can provide me with an article or a grammar guide on this matter.
Thank you in advance.
Generally, any noun that ends in the letter O gets an es when it becomes a plural:
potato --- potatoes
There is no rule in English that places an e at the end of a word that doesn't already have one.
As a rule, short words that end in e have a long vowel sound in the previous vowel.
Tim --- time
tun --- tune