*现在完成时
1.I have sat for hours in the classroom,reading a novel.
weather has been cold so far this winter.
3.I haven't finished my homework yet.
has just come.
he visited the city twice?
n't seen you for a long time!
haven't heard from her since last week.
has always said so.
've been to Beijing twice.
10.--Where shall I say you have gone if Li Ping asks for you?
--Say that I have gone to Beijing.
*过去完成时
1.I had stayed in Beijing for three years by then.
l then he had known nothing about it.
boy told his mother that he had been ill since he came back from the school.
had only been here for ten minutes when Jim came in.
they got to the field,the football match had already started.
had learned two hundred English words by the end of last term.
said he had learned two hundred English words by the end of last term.
said he had seen the film twice.
9.I had hoped to be able to take my seat in all this noise without being seen,but that morning the room was quiet and orderly.
r he finished his homework,he went to bed.
