由时间状语来判定 一般说来,各种时态都有特定的时间状语。与过去完成时连用的时间状语有: ( 1 ) by + 过去的时间点。 如: I had finished reading the novel by nine oclock last night. ( 2 )...
过去完成时与现在完成时相似,也有已完成和未完成两种用法,所不同的是,过去完成时将时间推移到过去某一时间之前,即所谓的过去的过去。具体地说,它既可表示在过去某一时间...
一、 ( )(1)The police found that the house _______and a lot of things_________. A. has broken into, has been stolen B. had broken into, had been stolen C. has been broken into, stolen D. had been broken into, stolen ( )(2)By the end of th...