an animal还是a animal说明为什么?

an useful animal?还是a useful animal? an animal还是a animal说明为什么? an animal doctor还是a animal doctor animal是用a还是用an做单数 this animal is monkey.这样说对吗?还是this animal is a monkey.? animal animal animal a story between an animal and human an animal show 中文 A__ t is an animal是A __t is an animal A bird is an animal which can fly .这样说对吗? a whale is more an animal than a fish.翻译 请问兽医的英文短语是a doctor for animals 还是a doctor of animals 还是an animal doctor This is an animal对an animal提问 my favorite animal is cat 还是my favorite animal is a cat a cunning animal a cunning animal