11.17 将来完成时  1) 构成will / be going to do sth.  2) 概念   a. 状态完成:表示某事继续到将来某一时为止一直有的状态。  b. 动作完成:表示将来某一时或另一个将来的动作之前,已经完成的动作或一获得的经验。   They will have been married for 20 years by then.   You will have reached Shanghai by this time tomorrow. 11.18 现在进行时  现在进行时的基本用法:  a. 表示现在( 指说话人说话时) 正在发生的事情。   We are waiting for you.  b. 习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行。   Mr. Green is writing another novel.    (说话时并未在写,只处于写作的状态。)   She is learning piano under Mr. Smith.  c. 表示渐变的动词有:get, grow, become, turn, run, go, begin等。   The leaves are turning red.   It's getting warmer and warmer.  d. 与always, constantly, forever 等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩。   You are always changing your mind. 典型例题   My dictionary ___, I have looked for it everywhere but still___ it.   A. has lost, don't find  B. is missing, don't find C. has lost, haven't found  D. is missing, haven't found.    答案D. 前句是一个仍在持续的状态,应用进行时,由于没有找到,其影响仍然存在,应用完成时,瞬间动词用于否定式时可用于完成时。

11.15 过去完成时 1) 概念:表示过去的过去 ----|-------|-----|---->其构成是had +过去分词构成。 那时以前  那时 现在    2) 用法  a. 在told, said, knew, heard, thought等动词后的宾语从句。   She said (that) she had never been to Paris.  b. 状语从句   在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。   When the police arrived, the thieves had run away.  c. 表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示"原本…,未能…"   We had hoped that you would come, but you didn't. 3) 过去完成时的时间状语before, by, until , when, after, once, as soon as。   He said that he had learned some English before.   By the time he was twelve, Edison had began to make a living by himself.  Tom was disappointed that most of the guests had left when he arrived at the party. 典型例题    The students ___ busily when Miss Brown went to get a book she ___ in the office.  A. had written, left B,were writing, has left  C. had written, had left D. were writing, had left   答案D. "把书忘在办公室"发生在"去取书"这一过去的动作之前,因此"忘了书"这一动作发生在过去的过去,用过去完成时。句中 when表示的是时间的一点,表示在"同学们正忙于……"这一背景下,when所引导的动作发生。因此 前一句应用过去进行时。 注意: had no … when   还没等…… 就……   had no sooner… than 刚…… 就……   He had no sooner bought the car than he sold it.

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