(
课件网) Section IV Grammar The Adverbial Clause of Time Review 1. He learn to play the harpsichord when he was four. 2. He showed musical talent when he was very young. 解析： when引导的时间状语从句表示具体的时间，有时可指时间点，也可以指一段时间。从句的谓语动词可用终止性动词，也可用持续性动词。 Review 3. As he grew older, he began to go deaf. 4. By the time he was 14. he had composed many pieces for the harpsichord, piano and violin, as well as for orchestras. 解析： 句子3中，as表示主句和从句动作同时发生 句子4中，by引导的时间状语从句，主句 通常用完成时态 The Adverbial Clause of Time 时间状语从句 1.时间状语从句通常由when,as, while,before, after, since, till, until, as soon as，once, whenever等 连词(词组)引导 eg Once it stops raining, we will leave for home. 雨一停下来，我们就回家。 He almost knocked me down before he saw me. 他快把我撞倒了才看见我 The Adverbial Clause of Time 时间状语从句 as ”随着，一边...一边...“；表示从句与主句动作同时发生。从句与主句通常用一般现在时或一般过去时，有时用过去进行时。 while ”在……时候”，强调主句发生在从句的过程中，从句常用进行时态。 when “当…时候”；既可以表示从句发生在主句的过程中(主句用进行时态)，也可以表示主句发生在从句的过程中(从句用进行时态)；when用在句中时，可以译作“这时”。 The Adverbial Clause of Time 时间状语从句 例句： I cut my finger as I was peeling the apple. 我在削苹果时割破了手指 You can't be too careful while(when) you are driving 你开车怎么小心都不过分 When I first met him ten years ago, he was studying at a middle school. 十年前我第一次见到他时，他正在一所中学学习 The Adverbial Clause of Time 时间状语从句 since 自从…以来到现在；通常从句用一般过去时，主句用现在完成时或一般现在时，但是当从句谓语动词是延续性动作时，则表示相反的含义。 before “在…之前；还没来得及…就;”通常从句和主句都用一般过去时或主句用般将来时从句用一般现在时表示将来。 The Adverbial Clause of Time 时间状语从句 例句 It is ten years since he left home 他离开家已经十年了 It was three years before he came back from abroad 三年后他才从国外回来 It will not be long before he realizes his dream. 不久他就会实现自己的梦想 The Adverbial Clause of Time 时间状语从句 注意: until与not / never / seldom / hardly等词连用时, 主句谓语动词通常是短暂性动作,直到...才”;until /till从句中用持续性动作,表示动作一直持续到……才终止。 例句： The car didn't stop until it hit a huge rock. 汽车直到撞在一块巨石上才停下来。 We kept on working until/till we finished all the work. 我们一直工作到完成所有工作。 The Adverbial Clause of Time 时间状语从句 2.名词短语也可以引导时间状语从句。例如：every time, each time, next time, the first time，last time 例句： Every/Each time he comes, he telephones me first 他每次来都先打电话 The first time I met her, she was teaching children to sing a song. 我第一次见到她,她正在教孩子们唱歌。 The Adverbial Clause of Time 时间状语从句 3.“the+表示时间的名词”也可以引导时间状语从句。例如: the moment, the instant（立即）,the minute, the summer, the year, the day, the morn ... ...
