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课件网) 外研版九年级英语上册 module2 Unit3 Language in use Learning aims To understand adverbial clauses of the time and to be able to make adverbial clauses with after, as soon as, before, since, until, when or while. When 后加短暂动词（可用过去式） While后加延续性动词。（一般为进行时） when while While we were doing our homework, the teacher came in. We were doing our homework when the teacher came in. while引导的时间状语从句 while引导的时间状语从句表示主句的动作在从句动作同时发生。由于while从句表示一个持续的行为, 所以从句中要用持续性动词或状态动词, 且持续性动词常用进行时态。 Don’t make any noise while I am recording. 我在录音时(你们)别发出声音。 Language Points Adverb Clauses of Time (时间状语从句) 用来修饰主句中的动词，副词和形容词的从句叫状语从句。 时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导 Grammar 在英语中用从句来表示一件事情或行为发生的时间，那么这个从句叫作时间状语从句。时间状语从句在句子中所作的成分是时间状语。 时间状语从句常用when, while, before, after, as soon as, since, until等连词引导 Lead in Read the sentences and talk about what you can find. While we're staying with our friends，we're going to spend one day in Qingdao. Before we begin dinner，my father gives thanks for the food. When it is all over，everyone helps wash the dishes. And my family always go somewhere interesting as soon as the holiday begins. We have celebrated the festival since the first pioneers from England arrived in America. After they landed，their first winter was worse than any English winter. 时间状语从句：用从句来表达一件事情或一个行为发生的时间。 由after, as soon as, before, since, until, when, while引导时间状语从句。 1. _____ our friends arrived, we all went to the square. 2. _____ they were watching TV, we listened to music and sang traditional songs. 3. _____ it was twelve o’clock, we all shouted “Happy New Year”. While After As soon as 4. We stayed there _____ she arrived. 5. He has made a lot of progress _____ he started to learn English last month. until since after as soon as since until while New Year’s Day around the world People wait until 12 pm. Everyone must have 12 grapes to eat at midnight. At each sound of the clock, we must eat a grape, but we can’t ever finish eating the grapes on time. Spain 1. when的用法 引导时间状语从句:“当......的时侯”，既可以表示在某一时间点发生的事，又可以表示在某一时间段发生的事。主句与从句描述的动作或事情可以同时发生。 I loved math when I was at school. 我在学校时喜欢数学。 He looked aside when I spoke to him. 我对他说话的时候，他向旁边看。 时间状语从句 2. while 的用法 (1). 引导时间状语从句，意为“当……时候”“在……期间”。 His parents died while he was at school. 在他上学期间他父母去世了。 (2). 引导时间状语从句，意为“与……同时”。 You may go swimming while I’m having lunch. 我吃午饭的时间里你可以去游泳。 时间状语从句 3. before 的用法 (1). before 用作连词，其基本词义是“ 在…之前”，用来表示时间或 ... ...
