any kind of中kind为什么不加s

any kind of中kind为什么不加s any kind of 为什么不加s any kind What kind of movies 为什么kind不加s?电影不是有很多种类，可为什么kind不加s? 和any kind of books还是any kind of book?any kind of 后面应加名次单数 还是复数? some kind of homework,为什么kind不加s?什么情况下要加什么情况下不加S? what kind of movies do you like?中kind为什么要加s a kind of pet还是a kind of pets,为什么? a kind of insect还是a kind of insects?为什么 kind of kind of susan is a beautiful girl ,but she is （）short A、kind B、kind of C、a kind of D、kinds of 为什么不选a cd呢, kind of+形容词,a kind of+名词 都是kind of 的词组为什么用法不同? a kind of 用法?a kind of apple 和 a kind of apples 哪个对 为什么? I don't think koalas are （the kind of） funny为什么用“the kind of ,A kind of B a kind of C kinds of ,为什么不选用ABC中的一个呢,帮我解释下呢, The dolphins are kind of interesting in the zoo.为什么kind of前用了are?不用are不行吗? there are____animals in the zooall kind of B all kind C kinds of D kind为什么 This kind of animals is more dangerous than any other animal最后一个动物为什么不加S,我的书上都有加,是不是加不加都可以啊