Welcome to our class 1.状语定义: 在复合句中由从句担任状语，称作状语从句，它可以用来修饰谓语、形容词或副词，或是整个句子 2. 当充当状语的部分是一个句子时，也就是状语从句。分类如下： 时间 地点 条件 让步 原因 目的 结果 比较 方式 状语从句 一. 时间状语从句 1.注意时态一致. 一般情况下: 主句 是将来时的时候, 从句 用一般现在时 1.表示同时性，即主从句的谓语动作同时发生或几乎同时发生。 引导词可分为两部分． while when whenever before after until (till) since as soon as while:持续性动词 ／进行时 1.一般或现在情况 2.将来情况－V一般现在时或现在进行时 3.过去情况 e.g. I like listening to music while I am doing my homework. e.gI’m going to the post office While you are there。 e.g. I hurt my shoulder while I was doing gym. When: 1.当…的时候 When I was young, I went to town myself. When he receives the letter, he’ll tell us. before引导的时间状语从句 1. 常译为“在……之前”， 2.表示主句的动作发生在从句的动作之前。 1.We clean the classroom before we leave school every day. 2.It will not be long before you regret for what you’ve done. after引导的时间状语从句 1.常译为“在……之后”， 2.表示主句的动作发生在从句的动作之后。 1.After you use plastic bags, you mustn’t throw them about. 用过了塑料袋之后，不准到处乱扔。 The Amrican War lasted four years _____ the North won in the end. A. After B. before C. when D. then B since引导的时间状语从句 1.常译为“自从……”， 2.主句常用现在完成时，从句常用一般过去时。 1.我们自从分手以后一直没见过面。 We haven’t seen each other since we parted. 常用句型：It has been (is) + 时间段 + since从句 “自从……有多长时间了 ” 2.自从她大学毕业已经有六年时间了。 It has been (is) six years since she graduated from the university. before,after,since He had left the town the day _____ she arrived. 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. It _____ (be) two years since we _____ (begin) to use this machine. before after before before after is/ has been began until/ till引导的时间状语从句 1.常译为“直到……时”， 2.表示主句动作发生在从句之前。 ◆当主句谓语动词是延续性动词时，主句常用肯定形式。 1：我会待在这里，直到你回来。 I’ll stay here until you come back. ◆当主句谓语动词是非延续性动词时, 主句常用否定形式。 not… until…“直到……才……”，这时until 可用before替换。 He didn’t go to bed until he finished his homework. 2.他直到做完作业才睡觉。 ____ he heard this, he got very angry. 2. I met Lucy____ I was walking along the river. A. when B. while C. as 对比训练 1 A B C 1. We were about to leave____ it began to rain. 2. She thought I was talking about her son, ____, in fact, I was talking about my son. 3. Hardly had I finished my composition ____ the bell rang. A. when B. while C. as D. during 对比训练 2 A B A as soon as引导的时间状语从句 1.译为“一…就…”， 2.表示从句动作一发生，主句的动作马上就发生。 1.他一回来我就告诉他这件事。 I will tell him about it as soon as he comes back. 2.相当于a ... ...
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