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课件网) 状语从句 定义: 一个____用作状语时,在语法上叫状语从句。这个句子可 修饰主句的_____._____._____ 或_____状语从句 通常由一个＿＿＿引起或起连词作用的____引起或由_____. _____等引起。 分类： 状语从句可表示1) _____ 2) _____ 3) _____ 4) _____ 5) _____ 6) _____ 7) _____ 8) _____9) _____等 句子 谓语 定语 状语 整个句子 连词 词组 副词 名词词组 时间 地点 原因 目的 结果 条件 行为方式 比较 让步 一、状语从句的引导词： 1.时间： 2.条件 3.原因： 4.结果： 5.比较： 6.目的： 7.让步： 8.方式： when, as, while, before, after, since, till, until, as soon as if, unless，in case that（万一） because, since, as so…that…, such… that…, so that as… as… , …than…. so that, in order that although, though as if, as though, as(按照) 1. 时间状语从句 (1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。 It was raining hard when got to school yesterday. While he was doing his homework, the telephone rang. As he walked along the lake, he sang happily. 注意:在时间状语从句里，通常不用将来时态， 用现在时态表示将来的动作或状态。 主句用一般将来时,从句用一般现在时. I’ll ring you up as soon as I get to New York. 我一到达纽约就打电话给你. I will tell him everything when he comes back. 他回来我会告诉他一切. 用when, while或as 填空: _____ we were talking, Mr Smiths came in. _____ they came home, I was cooking dinner. I was about to go to bed _____ I heard someone knock at t the door. 4. _____ we were watching TV, he was studying. 5. He is fat _____ his brother is thin. 6. _____ she sang, tears ran down her face. Conclusion: A从句为”当……的时候”,从句谓语为延续性动词, 主句谓语为非延续性动词(即终止性动词), 三者可通用. B 当从句的谓语动词为终止性动词,只能用when; 表示”正在那时”, 也只能用when. C.从句和主句的谓语动词都为延续性动词时, 只能用while; while还可作并列连词,表示”而”. D.当强调主句和从句的动作同时发生时,只能用as, 译”一边…一边…; 随着…” While/ As/ When When when While while As Before与after: Finish your homework _____ you go out to play. I had left the town the day _____ she arrived. He had walked three days ____ he found water. It was not long _____ he left his hometown. I played football _____ I (had) finished my homework Please tell her I’ll come ___ I do some shopping. It will not be long _____ we meat each other again. before before Conclusion: 1. Before作为连词, 有多种含义,必须根据上下文作出合理的判断. 2. Before与after所引导的时间状语从句中, 用现在时表示将来时. 4.Before引导的从句是过去式, 主句是过去时或过去完成时;. 主句为过去时,after从句可用一般过去时代替过去完成时. 3. Before与after 还可作介词,后接名词或-ing形式. before before after after before till 与until: 1. He lived with his parents _____ he graduated from college. 2. Not ____ he told me did I know the truth. 3. The children won’t _____ (come/ be) home until/ till it’s dark. 4. It was _____ the war was over that he returned to his land. till/ until until come not until Conclusion: 主句为肯定句时, 主句的谓语动词 ... ...
