如果一句话中有三个动词,主语是第三人称要不要都加s

One of them wants to watch TV and plays games.
这里one作主语,谓语动词用单数形式,want加S,后面的play加S.plays与前面的wants并列.而watch要用动原,因为to是动词不定式符号,后接动原.
My sisiter usually waters the flowers and listens to music.
waters与后面的listens并列,所以后面的listen要加S.