Unit 16 Stories Period Six Grammar单元语法(一)——过去完成时[语法图解][语法感悟]单句语法填空1 ． A Roman writer called Pliny wrote about a terrible volcanic eruption that he had_witnessed (witness) as a young man.2．By 1748, they had_found (find) an awesome historical site.3．He had_worked (work) in the factory for five years before we moved here.4．The film had_begun (begin) when they arrived at the cinema.5．I had_hoped (hope) to meet you at the airport, but I was caught in a traffic jam.6．I had_meant (mean) to come, but it occurred to me that I had some work to do.7 ． There was a knock at the door. It was the second time someone had_interrupted (interrupt) me that evening.一、过去完成时的基本构成主动语态：had＋动词的过去分词被动语态：had＋been＋动词的过去分词否定形式：had＋not＋动词的过去分词一般疑问句：Had＋主语＋过去分词＋其他？二、过去完成时的基本用法1．表示在过去的某一动作或时间之前已经发生了的动作或存在的状态，即“过去的过去”，常与时间状语 by then(截止到那时); by the end of...(在……结束之前/末); by the time...(表示过去时间的从句); up till then(直到那时)等连用。He had finished the work by the end of last month.上个月底以前他就已经完成了那项工作。Up till then, this hadn't been made public.到那个时候，这都没有被公开。2．表示从过去某一时刻开始一直延续到另一过去时刻的动作或状态。常与 for＋一段时间，或 since、when 和 before 等引导的状语从句连用。—Did Alan enjoy seeing his old friends yesterday?—Yes, he did. He hadn't seen his old friends for a long time.——昨天艾伦看到他的老朋友高兴吗？——是的。他很长时间没有看到他的老朋友了。3 ． 表 示 愿 望 、 打 算 一 类 的 词 ， 如 hope, expect, mean, intend, want, think, suppose 等，其过去完成时表示过去未曾实现的愿望或意图。—Why didn't you come to the concert last night?—I had meant to, but I had an unexpected visitor....
