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牛津译林版九年级上Unit 4 Growing up 状语从句课件(99张PPT)

日期:2024-06-16 科目:英语 类型:初中课件 查看:10次 大小:12240075Byte 来源:二一课件通
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牛津,译林,九年级,Unit,Growing,up
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状 语 从 句 英语课程 XX老师 状语从句 概念导入 状语是用来修饰动词,形容词,副词或句子 的一种句子成分 当充当状语的部分是一个句子时,也就是状语从句 常见的状语 5 状语从句的划分 6 时间状语从句 时间状语从句 如果我们用一个从句来表达一件事情或一个行为发生的时间,那么这个从句就叫时间状语从句。 When he heard the news , he couldn’t stop laughing. You must be careful when you are crossing the road. The?boss?asked?the?secretary?to?hurry?up?with?the?letters?so?that?he?could?sign?them.? The?old?man?always?enjoys?swimming?even?though?the?weather?is?bad.???? The?children?ran?away?from?the?orchard(果园),? the?moment?they?saw?the?guard 我们发现:时间状语从句中存在着引导词 时间状语从句 引导词 时间状语从句的引导词 when/while/as 当…的时候 after 在…之后 before 在…之前 until/till 直到 as soon as 一…就… since 自从 whenever 无论何时 …… when 意为“当……时”,引导的时间状语从句 表示主句的动作和从句的动作同时或先后发生。如: I feel very happy when you come to see me. 你(们)来看我时,我感到很高兴。(先后) 1.when 的用法 When you are crossing the street, you must be careful. 你( 们)过街道时,一定要小心。(同时) (2)when 引导的时间状语从句中,可以用延续性动词,也可以用短暂性动词。如: Someone knocked at the door when I was sleeping. 当我正在睡觉时,有人敲门。(延续性动词) I will visit my good friend when I arrive. 当我到达时,我将去看望我的好友。(短暂性动词) while 意为“当……时引导的时间状语从句表示主从句的动作在 同一时期发生,常用延续性动词或表示状态的词。如: They rushed in while we were discussing problems. 当我们正在讨论问题时,他们冲了进来。 Father was cleaning the car while I was playing computer games. (while表示两个动作同时发生) 当我正在玩电脑游戏时,爸爸正在清洗汽车。 2.while 的用法 注意:while 也可以作并列连词,表转折的关系, 相当于but,译为“然而”。如: I like listening to music, while my brother likes doing sports. 我喜欢听音乐,而我的兄弟爱好运动。 as 表示“当…时”、“一边…一边…”, 强调主语的动作与从句的动作同时发生,如: As she was dancing , her father was watching TV. 3.as 的用法 It’s getting colder and colder as the winter comes. 1.while的用法: (1)while引导的从句的谓语动词必须是延续性的 (2)强调主句和从句的动作同时发生(或者相对应) (3)while有时还可以表示对比。 区别:由when ,while ,as引导的时间状语从句 2.when的用法 when 引导的从句的谓语动词可以是延续性的,也可以是非延续性的。 3.as的用法 as 一般强调动作的同时发生,解释为“一边…一边…” 1.I was watching TV _____ my brother was writing an email at home at this time last night. A.as soon as   B.after C.when D.while 2.I was cooking _____ I heard someone knocking at the door. A.as soon as B.when C.until D.while 3.Rose was doing her homework _____ the bell rang. A.as soon as B.when C.until D.while √ √ √ 引导词when & while 练一练 before 意为“在……之前” after 意为“在……之后” 区别:由after和before引导的时间状语从句 1.Laura went to school by bike _____she had breakfast at home. A.when  B.after C.before D.while 2.Please take the medicine _____ you go to bed. A.when  B ... ...

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