Plurals (shows you have more than one) can be tricky for native and non-native speakers of English because the rules are not consistent. If you are an English as a second language (ESL) speaker you may find yourself leaving off final sounds. This can have an affect on plurals because often plural is shown by adding –s to the end of the word.
|One dog||Two dogs|
|One cake||Three cakes|
You may wonder what to do if a word ends in -s already. Then we add –es
|One bus||Two buses|
|One kiss||Two kisses|
We also add -es to words ending in ch, x
|One witch||Two witches|
|One box||Two boxes|
So you may think, OK, I’ll remember to add the s and you’d be correct until you come to a word that has an irregular plural form.
|One man||Two men|
|One child||Two children|
|One tooth||Two teeth|
Or a word that ends in f where we not only add the s but we also change the f to v.
|One knife||Two knives|
|One leaf||Two leaves|
|One self||Two selves|
But even that has a exceptions!
|One roof||Two roofs|
|One dwarf||Two dwarves|
When in doubt look in the dictionary, preferably one that will also pronounce the word for you.
For more examples look at these websites: