be动词的过去式是什么

be动词的过去式是was、were。was是is和am的过去式，were是are过去式，使用的时候要注意主谓一致。was和were的例句Itwasasunnydayyesterday昨天天气晴朗，Theyweretoobusytogoshopping他们太忙，以至于没空去购物，was和were的否定可以直接在后面加上not，变成wasn't(wasnot)或者weren't(werenot)。Iwasn'tintownlastweek上周我不在城里，Theyweren'treadytogetmarriedthen他们那时没准备好结婚，HewasnotinLondonatthattime他那时不在伦敦。Wewerelatefortheexamlastweek我们上周考试迟到了，Itwasagreattimeseeinghimagain再次见到他很开心。