牛津上海八年级下状语从句专题教案.docVIP

牛津上海八年级下状语从句专题教案 PAGE / NUMPAGES 八年级下状语从句专题教案 一、专题精讲 1. 状语从句考点介绍 状语从句属于复合句。状语从句中常考的是时间状语从句和条件状语从句。 状语从句分九类： 从句种类 主要从属连词 1时间状语从句 when, while, as, before, after, until, till, whenever 2条件状语从句 if, unless 3目的状语从句 in order that, so that 4结果状语从句 so…that, such…that, so that, so 5原因状语从句 because, as, since 6让步状语从句 although, though, even though(if), while 7方式状语从句 as if, as though 8地点状语从句 where, wherever 9比较状语从句 than, as 2. 状语从句用法详解 ★时间状语从句 1. 时间状语从句用一般现在时表示将来。连接时间状语从句的连接词有： when(当……的时候)，while（当……的时候），as(当……的时候)，once( 一旦)， till( until)（一直到……，直到……才），by the time(到……时)，as soon as（一……就）the moment(一……就)．since(自从 ……)．before(在……前)．after(左……后) 2. when，while，as均可表示“当……的时候”。 when强调“特定时间”，表示主句谓语动词的动作与从句谓语动词的动作是同时发生的，或从句的动作发生在主句的动作之前；while表示的时间是一段，而不是一点，as多用在口语中，强调“同一时间”或“一前一后”，有时还有“随着”的含义。 Ill go on with the work when／come back tomorrow．我明天回来后会继续做我的工作。 When spring came, he felt like a trip.春天来了，他想去旅游。 When he was eating his breakfast, he heard the doorbell ring.(强调吃饭的时候）。 While he was eating his breakfast, he heard the doorbell ring.（强调吃饭的过程中） While I was studying, you fell asleep.当我学习的时候，你睡着了。 Just as he was speaking, there was a loud explosion.正当他要说话时，传来很大的爆炸声。 As I was going out, it began to rain.（强调两个动作先后发生） As spring warms the good earth，all flowers begin to bloom．(as有“随着”的含义) 3. till／until，表示“一直到……”，主从句都用肯定式；表示“直到……才”，主句否定，从句肯定。 He worked until it was dark. 他一直工作到天黑。 He did not get up till his mother came in. 一直到母亲进来他才起床。 4. once“一旦”，by the time“到……时”。 Once you see her, you will find what I said is true. 一旦你见到她就会发现我说的是对的。 Once (it is）published, this book will be very popular. 一旦出版，这本书会大受欢迎。 by the time+现在时，主句用将来完成时。 By the time he arrives, we will already have left here. 等他到达时，我们将已离开这儿了。 by the time+一般过去时，主句用过去完成时。 By the time he arrived, we had already left here.他到达的时候我们早已离开这儿了。 5. as soon as，the moment表示从句动作一发生，主句动作随即发生，通常译为“一……就”。 As soon as I finish the work, Ill go to see you. 我一完成工作就会来看你。 I shall come as soon as Ive