past perfect tense是什么意思 past perfect tense怎么读
past perfect tense的英文翻译是什么意思，词典释义与在线翻译
Noun:- a perfective tense used to express action completed in the past;
"`I had finished' is an example of the past perfect"
past perfect tense的相关资料
pastprep.过；经过adv.过adj.过去的n.过去；昔日；过去的事情；过去的经历；往事
past it精力不济的
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