Module 3 MusicSection Ⅲ Grammar 时间状语从句和过去完成时 语法图解探究发现①Whenhe was very young, Mozart had a lot of musical talent.②While he was still a teenager, he was a big star.③As he grew older, he began to go deaf.④By the time he was 14, Mozarthad composed many pieces for the harpsichord, piano and violin, as well as for orchestras.⑤Afterthey had known each other for many years, Beethoven said, “He is a good composer, but he has taught me nothing.”⑥Before they visited India, they had recorded seven albums.[我的发现](1)以上所有例句中都包含一个时间状语从句。(2)例句④⑤⑥都包含了一般过去时或过去完成时。(3)例句①②中，when 和 while 都表示“当……时候”，例句③中 as 表示“随着”。(4)例句④⑥中，by the time 和 before 引导时间状语从句，从句用一般过去时，主句则用过去完成时。(5)例句⑤中，after 引导时间状语从句，主句用一般过去时，从句用过去完成时。一、时间状语从句时间状语从句用来说明主句谓语动词发生的时间，由连词引导。本单元主要学习when, while, as 及 by the time 引导的时间状语从句。1．when 可以和延续性动词连用，也可以和短暂性动词连用，主句和从句中的动作或状态可以同时发生，也可以先后发生。When they heard the news, they were very excited.当他们听到这个消息时，非常激动。(hear 是短暂性动词)When I lived there, I used to go to the seashore on Sundays.我住在那里时，星期天常到海滨去。(live 是延续性动词)[名师点津] (1)when 还可作并列连词，意为“就在这个时候”。I was watching TV whensomeone knocked at the door.我正在看电视，这时突然有人敲门。(2)when 还可译为“这时；就在那时”，常用于以下句型：①be about to do ... when 正要做……这时②be doing ... when 正在做……这时③had done ... when 刚做完……就2．while 引导时间状语从句时，从句的谓语动词必须是延续性动词。While/Whenshe was reading a novel, she cried.她看小说的时候哭了。They rushed in while we were discussing problems.我们正在讨论问题时，他们冲了进来。[名...
