第1个回答 2010-08-04
She promised she would have finished the work before I came back.
她承诺过,她会在我回来之前完成这个工作。。。
难在哪里呢?
第2个回答 2010-08-04
过去式的动作都是发生在过去,因此谓语动词都是过去时态如:did,were,was;
将来时的标志是:will,be going to以及一些表示将来意义的短语、词等;
完成时是发生在过去,但着重强调对现在的影响,标志是:have done,have been done。
第3个回答 2010-08-04
像这个例句:she said she would have finished his goal as planned.