likes swimming 的like一定要加s嘛?

likes swimming 的like一定要加s嘛? He doesn't likes swimming 的likes 为什么要加s? He likes oranges.like为什么加S does,do的用法,还有LIKE,LIKES比如LIKE甚么时候加S She likes applees.likes为什么加S?名字后like 为什么不用加s? My sister doesn't (like,likes) swimming I like swimming改为否定句,还有He likes swimming. I like swimming;he likes swimming,too.(改为同义句) My husband likes steak.这里的like后为什么加s呢? Does she likes dogs?这句话对吗?第三人称单数后的like要加s吗? The girl is so beautiful that everybody likes her的like为什么加s He likes English,改成一般疑问句,后面的like还要加S吗