Nouns that end in 'o' in their singular form can take an 's' or an 'es' for their plural form. Some examples:
Some plural words ending in "o" are photos, pianos, casinos, and zoos.
Some words ending in o that form their plural by adding s only include: pianos, duos, solos, tacos.
es, like echo- e choes that would be plural
potato - potatoes tomato - tomatoes hero - heroes zero - zeros halo - halos whacko - whackos cameo - cameos patio - patios oreo - oreos
Unfortunately there is no simple rules for using 's' or 'es' to change nouns ending in 'o' into the plural form. How fortunate we are to live in the age of spell check, otherwise you need a hard copy dictionary or a good memory. Some examples are:echoesheroespotatoestomatoesvetoesautoskangarooskilosphotostattoos
Some plural words ending in "o" are photos, pianos, casinos, and zoos.
Because there is no standard rule for words ending in -o.
Some words ending in o that form their plural by adding s only include: pianos, duos, solos, tacos.
There is no hard-and-fast rule with regard to forming the plural forms of nouns ending in O. Some nouns adopt the ending -es, such as heroes, tomatoes, potatoes. Other nouns (especially those with two ending vowels) simply adopt an S, such as cameos, patios. Others appear in both forms: zeros/zeros, volcano/volcanoes, tornados/tornadoes. (The -es in these three is the dominant usage.)
Nouns ending with -o that form the plural by adding -s to the end of the word are:autoscameoskangarooskilosmemosphotospianossolosstudiostattoosvideoszoos
plural: pianosMost words ending with an 'o' usually take '-es' to form the plural, but some words take '-s', e.g. pianos, radios, videos, etc.
There's not a good one. You just have to memorize the "oddball" words that take "es" as an ending. Most words ending in "o" will just take an "s" as the ending. Use a Study Deck - see the link - to memorize the other words. Here's another good link to show you some of the most common plural endings for "o" words, too.
es, like echo- e choes that would be plural
Cello > cellosDisco > discosRadio > radiosPhoto > photosPatio > patios
There's no general rule for forming the plural forms of words ending in -o. Many plural forms are formed by adding -es, e.g. tomato - tomatoes, potato - potatoes, hero - heroes. Other plurals are formed simply by adding -s, e.g. zero - zeros, memo - memos, hippo - hippos.
potato - potatoes tomato - tomatoes hero - heroes zero - zeros halo - halos whacko - whackos cameo - cameos patio - patios oreo - oreos
Unfortunately there is no simple rules for using 's' or 'es' to change nouns ending in 'o' into the plural form. How fortunate we are to live in the age of spell check, otherwise you need a hard copy dictionary or a good memory. Some examples are:echoesheroespotatoestomatoesvetoesautoskangarooskilosphotostattoos