cangaroo袋鼠复数为什么是s而不是es

o结尾除了tomato、potato加es之外，其他一律加s，如radios、zoos等1. 一般在名词词尾加-s。如：dog-dogs, house-houses, gram-grams.2. 以-s,-sh, -ch及-x结尾的名词加-es构成其复数形式。如： kiss-kisses, watch-watches, box-boxes, bush-bushes.英语上名词按可数与否可分为可数名词和不可数名词。可数名词按数目又可分为单数名词和复数名词两类。（注：不可数名词没有复数形式如water(水)。）单数名词主要用来表示“一个”东西的概念。数量大于“1”就应用复数名词来描述。单数名词变复数名词分规则变化和不规则变化：1. 一般在名词词尾加-s。如：dog-dogs, house-houses, gram-grams.2. 以-s,-sh, -ch及-x结尾的名词加-es构成其复数形式。如： kiss-kisses, watch-watches, box-boxes, bush-bushes.3. 以-o结尾，注意以下几点：（1）一般在词尾加-es.如：tomato-tomatoes, potato-potatoes（2）如果是外来语或缩写名词, 则加-s。如：piano-pianos, dynamo-dynamos, photo-photos, kimono-kimonos, biro-biros。（3）有些以-o结尾的名词,其-o前是元音字母则加-s。如：studio-studios, radio-radios.（4）以-oo结尾的名词只加-s。如：zoo-zoos。4. 以“辅音字母 + -y“ 结尾的名词，则先把-y改成i，再加-es。如：baby-babies, university-universities, fly-flies, impurity-impurities.5. 下列以f或-fe结尾的名词，须先将-f或-fe改成-v，再加-es。这些名词是：calf, half , knife, leaf, life, loaf, self, sheaf, shelf, thief, wife, wolf 等。如：wife-wives, wolf-wolves, calf-calves.（像roof等词直接加s，如果是初中阶段，掌握roos一个特别单词就行了）6. 以下几个名词scarf, wharf, hoof, handkerchief等的复数形式，可先将-f或-fe改成-v，再加-es；也可直接加-s，即scarfs或scarves, wharfs或wharves, hoofs或hooves, handkerchiefs或handkerchieves。

Tony often goes to the zoo on Sunday. There are many animals in the zoo. Look! This cangaroo comes from Australia, it eats grass only, not meat, and runs very fast.

This giraffe is from Africa, and very tall. The elephant is from India, and likes water. The panda is from China, and eats bamboo leaves. It only lives in China. Tony likes panda very much.

---