英语义、考试规则、词组
四级语法讲义
一:时态:所谓的"时态",就是时间+状态。谓语动词的时态见下表:
1.主动形式
过去 现在 将来 过去将来
一般 did do will/shall do should/would do
进行 was/were doing am/is/are doing will/shall be doing /
完成 had done have/has done will/shall have done should/would have done用于虚拟语气
完成进行 had been doing have/has been doing / /