be动词用过去式 后面动词还用过去式吗

be 动词是时态是过去时,was ,后接动词如果是被动语态的话,后接动词加ed 如,This book was written by me.此句中be动词由于时态是过去时,为was,而书是被写的,被动语态,则 written 谓语动词有行为动词,系动词,情态动词...