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课件网) Unit 3 Language in use Module 2 Public holidays To understand adverbial clauses of time and to be able to make adverbial clauses with after, as soon as, before, since, until, when or while. To be able to write about a festival 学习目标 _____ we’re staying with our friends, we’re going to spend one day in Qingdao. 2. _____ we begin dinner, my father gives thanks for the food. 3. _____ it is all over, everyone helps wash the dishes. Before While When 4. And my family always go somewhere interesting _____ the holiday begins. 5. We have celebrated the festival _____ the first pioneers from England arrived in America. 6. _____ they landed, their first winter was worse than any English winter. since as soon as After 用while, before, as soon as, when, since, after完成下列句子。 新课讲授 Language practice Language practice 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. 语法小结 Adverb Clauses of Time(时间状语从句) 用来修饰谓语动词、其他动词、定语、状语或整个句子的从句叫状语从句。状语从句有很多种，今天我们主要学习由when, while, before, after, as soon as, since, until引导的时间状语从句。 when从句的动作可与主句的动作同时发生，也可先于主句的动作； 从句的谓语动词可以是延续性动词，也可以是瞬间性动词 并且when有时意为“就在那时”。 When I got home, he was watching TV. 当我到家的时候，他正在看电视。 Mozart started writing music when he was four years old. 当莫扎特四岁的时候，开始写音乐作品。 I was about to go out when the telephone rang. 我刚要出门，电话铃响了。 when与while 都意为“当……的时候”。when 引导的时间状语从句, 谓语动词既可以是持续性的, 也可以是终止性的；而while引导的时间状语从句, 谓语动词只能是持续性的, 并且常用进行时态。试比较： When he woke up, it was nine o’clock． √ While he woke up, it was nine o’clock． × When I was waiting for a bus, I met her． √ While I was waiting for a bus, I met her． √ 辨析 三、before引导的时间状语从句 before表示主句的动作发生在从句之前。 e.g. I can’t tell you what happened before he comes back. 他回来之前我不能告诉你发生什么了。 四、after引导的时间状语从句 after表示主句的动作发生在从句的动作之后。 e.g. After she finished the task, she enjoyed a happy vacation. 完成任务后，她好好地度了一个假。 类型 用法 例句 6.由since引导的时间状语从句 since意为“自从……”,从句用一般过去时,主句用现在完成时。常用句型:It has been+一段时间+since从句,意为“自从……以来已经很久了”。 We haven't seen him since he left. 自从他离开后,我们就没见过他了 It has been two years since I met you the first time. 从我第一次见你到现在已经两年了 类型 用法 例句 7.由until/till引导的时间状语从句 until/till ... ...
