he wants to watch TV .这watch为啥不加es,不是在肯定句中动词都变单三的吗

he wants to watch TV .这watch为啥不加es,不是在肯定句中动词都变单三的吗 句子：He likes to watch sports games on TV."watch"后为什么不加"es"? he wants to watch TV对watch TV提问 His parents watch TV every night,.这句话的watch 用加es吗,为什么 He was watch TV.中watch加不加es He is going to watch TV 中的watch 在句中充当什么成分 He wants to watch TV shows.(改为一般疑问句) ___ he ___ to watch TV He wants to watch TV .改为一般疑问句 Does he watch ball games on TV 改为肯定句 Nancy wants to watch TV（对watch TV提问） they watch tv sometimes这个句子中watch要不要加es,为什么 who wants to watch TV play?的意思