时间&条件状语从句复习课件2021-2022学年沪教牛津版八年级上册英语

Grammar 【时间&条件状语从句】 1 状语从句 定义：用来修饰主句中的动词，形容词或副词等，充当状语的从句叫状语从句。 Before we begin dinner, my father gives thanks for the food. 2 1 时间状语从句 3 时状—关联词 找出下列句子中的从句和引导词，圈出来 1)My mum was cooking when I got into the kitchen. 2)After he left the college, he went to America. 3)I’ll call him as soon as I get there. 4)He didn’t go to bed until his father came back. 5)He has lived in Beijing since he was born. 步骤：1. 先找关联词；2. 关联词后的句子就是从句。 从句 从句 从句 从句 从句 4 时状—关联词 引导词 含义 用法 when/while as soon as before/after   until since 当……的时候 一……就…… 在……之前/后 直到…… 自从…… when从句的谓语是延续性动词和非延续性动词，主句与从句的动作或事情可以同时发生，也可以先后发生，有时表示“就在那时”。 while从句的谓语必须是延续性动词，强调主句与从句的动作同时发生。常用进行时态。 强调动作相连 从句表示动作或状态一直持续到某一时刻 从句表示动作或状态一直持续到某一时刻 5 时状—时态 时态 例句 I want to travel all over the world when I make a lot of money. 主现从随 主过从过 主将/祈/情从现 主现完+since+一般过去式 My mother was cooking dinner when I came home. Please call me when you get there. I will write to you as soon as I arrive in Beijing. It has been three years since