关于下面两道题的区别.preparing 与prepared23.Seeing the soldiers well_____ for the flood-fight,the general nodded with satisfaction.A.prepare B.preparing C.prepared D.having prepared这道题选择C.prepared 11 .The secretary worked late in

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关于下面两道题的区别.preparing 与prepared23.Seeing the soldiers well_____ for the flood-fight,the general nodded with satisfaction.A.prepare B.preparing C.prepared D.having prepared这道题选择C.prepared 11 .The secretary worked late in

关于下面两道题的区别.preparing 与prepared23.Seeing the soldiers well_____ for the flood-fight,the general nodded with satisfaction.A.prepare B.preparing C.prepared D.having prepared这道题选择C.prepared 11 .The secretary worked late in
关于下面两道题的区别.preparing 与prepared
23.Seeing the soldiers well
_____ for the flood-fight,the general nodded with satisfaction.
A.
prepare B.
preparing C.
prepared D.having prepared
这道题选择C.prepared
11 .The secretary worked late into the night,____ a long speech for the president .
  A .to prepare B .preparing C .prepared D .was preparing
B .preparing
请问为什么?有什么区别?

关于下面两道题的区别.preparing 与prepared23.Seeing the soldiers well_____ for the flood-fight,the general nodded with satisfaction.A.prepare B.preparing C.prepared D.having prepared这道题选择C.prepared 11 .The secretary worked late in
第一个题可以理解为形容词,来形容士兵们准备好了,准备好了,那肯定是过去准备的吧?那用ed肯定最好啊.第二题,是表示一个持续的状态,来说明前面工作到晚上的原因,你想啊,工作了一晚,肯定一直在做某事吧,所以用进行时最好.