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2012中考英语:名师点拨语法及提分训练题解析第15篇【状语从句】-时间状语从句 一、时间状语从句 概念:在复合句中,由时间连接词引导的状语从句叫做时间状语从句。(在复合句中,要注意主句和从句的时态大多都要保持一致。) 要点:时间状语从句,由以下连词引导: when while as after before as soon as since till /until by the time 在时间状语从句中,要注意时态一致。一般情况下主句是将来时的时候,从句主要用一般现在时。 1.when在.的时候Mozart started writing music when he was four years old. (在)莫扎特4岁的时候,开始写音乐作品。 2.while在.期间He visited a lot of places while he was traveling. 他在旅行期间参观了许多地方。 3.as在.的同时;一边.一边.We always sing as we walk. 我们总是一边走一边唱。 4.after在.之后He left the classroom after he had finished his homework . 他做完作业之后就离开教室。 5.before 在.之前Mr. Brown had worked in a bank for a year before he came here. 布朗先生来这里之前已经在一家银行里工作一年了。 6.as soon as 一。就。We began to work as soon as we got there. 我们一到那就开始工作。 I will write to you as soon as I get home. 我一到家就给你写信。 7.since 自。以来 到现在表示自过去的一个起始时间点到目前(说话时间)为止的一段持续时间。主句一般用现在完成时,从句用一般过去时。还可以用作介词,本句从句还可以用短语:since three years ago(从三年前至今)表示。 Mr Green has taught in that school since he came to China three years ago. 自格林先生来中国以来,他就在这所学校教书。 8 till /until直到。都可以作连词,连接时间状语,也可以作介词,与其它词构成介词短语,在句中作状语。(强调将一般用until) They walked till /until it was dark. 他们一直走到天黑。 Xiao Ming didnt leave home till / until his father came back. 小明直到他爸爸回来才离开家。 9. by the time 到。为止(所在句子的主句应用完成时) By the time he gets there , his father has already gone. 他到家的时候,他爸爸已经走了。 By the time I got to school, the class had already began. 我到校时,已经开始上课了。 *学优中考网 www.xyzkw.com
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