Module 2 时间状语从句 2025-2026学年外研版(2012)英语九年级上册

时间状语从句 状语从句是由从句充当状语的句子,可以分为时间状语从句、地点状语从句、原因状语从句、 目的状语从句、 结果状语从句、条件状语从句等 1. when引导时间状语从句 (1) when意为“当……时”,表示主句的动作和从句的动作同时或先后发生 When you are crossing the street, you must be careful.当你过马路时,一定要小心(动作同时发生) Call me when you’ve finished. 你完成后就打电话给我 (动作先后发生) (2)when引导的从句谓语可以用延续性动词,也可以用非延续性动词 He cut his fingers carelessly when he was cooking. 他在做饭时,不小心切到了手指 (延续性动作) I worked for a foreign company when I lived in Shanghai. 住在上海时,我在一家外企工作(非延续性动作) 2. while引导时间状语从句 (1) while意为“与……同时,在……期间 ”,表示主句动作和从句动作同时发生,引导的从句谓语用延续性动词,且使用进行时态 While we were dancing, a stranger came in. 我们正在跳舞时,一个陌生人进来了 While I am doing my homework, my sister is playing games. 在我做作业的同时,我的妹妹在玩游戏 (2)while可以作并列连词连接主从句,主从句结构相似,表示两者之间的对比关系,意为“而,然而” I like watching videos while my sister likes reading books. 我喜欢看视频而我妹妹喜欢看书 3. as引导时间状语从句 as意为“当……时、一边……一边……”,强调主句动作和从句动作的同时性 As I waited at the stop, I heard a big noise. 当我在车站等车时,听到一个很大的声响 Alan heard the story as she washed. 艾伦一边洗衣服一边听故事 小结:三个“当……时” 从句的引导词 从句的谓语动词 主从句动作顺序 when 延续性v. / 瞬间性v. 之前、之后、同时 while 延续性v. 同时(有对比含义) as 延续性v. / 瞬间性v. 同时 4. before & after引导时间状语从句 before、after意为“在……之前/后”,表示主句的动作发生在从句的动作之前/后 I closed the window before I left the room. 我在离开房间前把窗户关上了 I found his coat after he left. 我在他离开后找到了他的外套 5. since引导时间状语从句 (1) since意为“ 自……以来 ”,主句常用现在完成时,从句常用一般过去时 Great changes have taken place since you left this city. 你离开这座城市后,它有了翻天覆地的变化 I have lived here since I was five. 自五岁起,我就一直住在这 (2) It has been +时间段+since句型 ,表示“自从……以来有(多长时间)” It has been 2 years since we last met. 自我们上次见面以来已经有两年了 6. until/til引导时间状语从句 (1)until/till表示“直到……为止”,指的是某一延续性行为持续到某一时间点 I’ll wait until/till the concert is over. 我会等到演唱会结束为止 (2)当主句为否定句时,常构成“not……until”结构,意为“直到……才” You can’t leave until you finish your work. 你要直到工作完成才能离开 7. as soon as引导时间状语从句 as soon as意为“一……就……”,强调动作的紧密型,在时态上主从句时态一致,若主句为将来时,则从句用现在时代替将来时(主将从现) As soon as he heard the news, he jumped for joy. 他一听到这个消息,就高兴得跳了起来(主过从过) I’ll go with you as soon as I finish my work. 我一完成工作就跟你走(主将从现) 二、原因、目的、结果状语从句 1.原因状语从句 原因状语从句表示原因或理由,其连接词有because(因为)、as(因为)、since(既然)等 (1)because引导原因状语从句 ①because表示造成某种情况的直接原因,语气最强,常用来回答由 why的提问 Why didn’t you come to my birthday party? Because I was too busy. 为什么你昨天没来参加我的生日派对?因为我太忙了 He took off his coat because it was too hot in the room. 因为房间里太热了,所以他把外套脱了 ②because不能与 so在句子中同时使用 My mother was ill, so I didn’t go to your party. Because my mother was ill, so I didn’t go to your party. (2)since引导原因状语从句 since往往表示众所周知的原因,意为“既然;由于 ”,通常放在句首,其语气比 because弱,比 as稍强 Since you come, wait for more time please. 既然你来了,请再多等一会儿 Since you won’t help me, I’ll ask someone else. 既然你不肯帮我,我就去问别人了 (3) as引导原因状语从句 as表示原因时,语气最弱,引导的从句位于主句前后均可 It is hard to know what to do, as we are not his parents. 由于我们不是他的父母,我们很难知道该做什么 As you were out, I left a message for you. 由于你不在,我给你留了个口信 (4)for引导原因状语从句 由for引导的从句放在句末,且前面有逗号,用于补充说明或推断原因, He is absent today, for he is ill. 因为生病了,所以他今天没来 It is going to rain, for there are many dark clouds in the sky. 要下雨了,因为天上有好多乌云 小结:语气强度because﹥since﹥as, for表补充说明或推断原因 学科网(北京)股份有限公司 $