human 是单数还是复数

human 是单数还是复数 human是单数还是复数 human 做主语是单数还是复数?例如：How do human survive How does human survive? 英语翻译human beings speak with mouth还是human beings speak with mouths还是human beings speak with a mouth 为何主语是复数,后面要用单数呢? each human being用单数还是复数(is/are)? human这个词是单数还是复数?如果塔本身就是复数的话,那么为什么还可以加S human being和human加的谓语用单数还是复数? Parents是单数还是复数是单数还是复数(简练) ''people''是复数还是单数? clothes是单数还是复数? weather是单数还是复数 chocolate是单数还是复数? family是单数还是复数 people是复数还是单数? people是单数还是复数? milk是单数还是复数 hamburger是单数还是复数? half是单数还是复数