MY PEN IS GONE是什么结构动词为什么用IS

MY PEN IS GONE是什么结构动词为什么用IS My pen is gone.My pen is lost. my(dear)!where is my pen?为什么用dear Is this my pen 同义句是什么 my pen and his pen is yellow用is My pen is green. "Where is my pen?" ____that is my pen my favorite food is hamburgers为什么be动词用is? My cold is gone.中的gone 英语My life is gone My Love Is Gone 歌词