posted by Dion .
We have been given a list of words and have to write the plural of them. I have found the answer to each of the words but now have to write rule for each. I know that words ending in ch, x, s or s-like sounds will all end in es. I am having trouble find a rule for words like buffalo, disco, volcano etc (some end in oes or os), I don't know how to explain the rule for this one, I have the same for words like chief, loaf, wife (some end in fs or ves). I cannot find a rule for this one either. Please can someone help. Many thanks.
For words ending in "o" you need to look at the letter in front of it. If the letter before the "o" is a vowel, then add -s. If the letter before the "o" is a consonant, then add -es.
There is no hard-and-fast rule for the words that end in "f" -- you just have to memorize these!!