i always watch cartoons.这句话里后面一个单词为什么加S

i always watch cartoons.这句话里后面一个单词为什么加S i always watch cartoons. 这句话里有哪些语法 i always watch cartoons.我想问的是这句话里有哪些语法知识 I like to watch DVDs .这个DVD后面为什么要加s?我知道是DVD的复数形式,但是在这句话里why? I like to watch DVDs .这个DVD后面为什么要加S? She likes cartoons.这句话有无语法错误?cartoon在句中是否加s? She always stricks with me .这句话对麼?第三人称时always后面的动词要加s吗? 请问a book of cartoons 中的cartoon 为什么加s I have just moved to a house in bridge street.这句话里in 后面为什么不加 Let's watch some cartoons.同意句 my watch keeps good time.这句话到底谁是主词,为什么keep要加S I watch sports games on TV.sports 为什么加S