过去完成时(1) 构成：由“助动词had(用各种人称和数) + 过去分词”构成 否定式：had not + 过去分词 缩写形式：hadn’t (2) 用法：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作。Revision(3) 它所表示动作发生的时间是“过去 的过去”。① 表示过去某一时间可用by, before 等构成的短语来表示。② 也可以用when, before 等引导的时间状语从句来表示。 ③ 还可以通过状语从句或通过上下文暗示。根据句意，用括号内所给动词的适当形式填空。1. By the end of last year, I __________ (be) to the Great Wall three times.2. By the time I got up, Mom _________ (go) out for some exercise.3. I ___________ (learn) 1,000 English words by last term.had been had gone had learned 4. By 9 o’clock last night, we __________ (get) 20 pictures about the accident.5. When I went into the classroom, the final bell __________ (ring). I was happy that I wasn’t late.had gotten had rung 1a Put these words in the correct columns in the chart. fool invite costume embarrassed go off callget dressed emptyshow up realize change clocktired stay upn. （特定场合穿的）服装；装束adj. 窘迫的，害羞的foolcostumechangeclock fool invite go off get dressedshow uprealize change stay upembarrassedtiredemptyLast Friday night, |
