... 2 You add `-s' to form the plural of most nouns. book* booksschool* schools You add `-es' to nouns ending in `-ss', `-ch', `-s', `-sh', or `-x'. ... ending in `-o' add `-s', and some add `-es'. photo* photos piano* pianos hero* heroes potato* potatoes Nouns ending in a consonant and `-y' change to `-ies'. ... hyphen: `no-one'. 2 You use indefinite pronouns when you want to refer to people or things without saying exactly who or what they are. The pronouns ending in `-body' and `-one'...