问题描述：
关于以o结尾单词复数形式中es 与s
书上说
o结尾的名词：
表示有生命的名词,一般加es;
如：heroes; tomatoes；potatoes;
没有生命的一般加sradios; photos;
可是如何从语言来源上理解o结尾的单词加es,s的区分?或者说如何解释用s,es来把o结尾单词复数加以分别开,依据或道理是什么?
问题解答：
我来补答
牛津词典列表：
Nouns ending in -o
Nouns ending in-o can add either -s or -es in the plural,and some can bespelled either way.
As a generalrule,most nouns ending in -o add -s to make the plural:
solo solos
zero zeros
avocado avocados
Those which have a vowel before the final -o always just add -s:
studio studios
zoo zoos
embryo embryos
Here’s a list of the most common nouns ending in -o that are always spelled with -esin the plural:
buffalo buffaloes
domino dominoes
echo echoes
embargo embargoes
hero heroes
mosquito mosquitoes
potato potatoes
tomato tomatoes
torpedo torpedoes
veto vetoes
Here are someof the common nouns ending in -o that can be spelled with either -sor -es in the plural:
banjo banjos or banjoes
cargo cargos or cargoes
flamingo flamingos or flamingoes
fresco frescos or frescoes
ghetto ghettos or ghettoes
halo halos or haloes
mango mangos or mangoes
memento mementos or mementoes
motto mottos or mottoes
tornado tornados or tornadoes
tuxedo tuxedos or tuxedoes
volcano volcanos or volcanoes
