问题补充:
We e leaving at six oclock ,and hope most of the journey by lunch
time.
A. to do
B. to have done
C. to make
D. to have made
答案:
A. to do
(答案→)B. to have done
C. to make
D. to have made
解析:B不定式的完成时用来表示这个动作发生在谓语动作之前,或是表示该动作的完成。本题中不定式的完成时表示的正是该动作的完成,因此这句话可改写为:We e leaving at six oclock,and hope that we will have done most the iourney bv lunch time.