Module2 Unit3 课件-2021-2022学年外研版九年级上册英语

Module 2 Unit 3 Language in use 时间状语从句 什么是时间状语从句？ 在英语中，用从句表达一件事情或一个行为发生的时间，这个从句就叫时间状语从句。时间状语从句常用when, while, before, after, as soon as, since, until等连词引导。 时间状语从句连词 ①when 意为“__________”,可表示某一时间点发生的事，也可表示某一时间段，主句与从句描述的动作或事情同时发生。 当...的时候 例句：I often played with Bob when I ______(live) there. Sally began to dance when She ____(be) a little girl. lived was ②while 强调主句与从句所表示的动作在同一时期发生，从句中的谓语动词必须是延续性动词。 例句：While I _________(do) homework, my mum is cooking dinner. While I _____________(watch) TV, Jim came in. was doing was watching 时间状语从句连词 ③before 意为“________”,表示主句的动作在从句动作之前。 在...之前 例句：Before we begin dinner, my father always ______(give) thanks for food. I had finished my homework before my father _____(come) back. gives came ④after 意为“________”,表示主句的动作在从句动作之后。 在...之后 例句：After Denny locked the door, he ____(leave). I went to bed after I ________(finish) reading the book last night. left finished ③before 意为“________”,表示主句的动作在从句动作之前。 时间