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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 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/till等连词引导。 类型 用法 例句 1.由when引导的时间状语从句 when意为“当……的时候”,既可以表示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,也可以先后发生。所以when引导的从句中,谓语动词既可以是延续性动词,也可以是瞬间动词。 The students were sleeping when the teacher came into the classroom.当老师走进教室的时候,学生们正在睡觉。 He called me when I stayed at home.当我待在家的时候,他给我打电话。 类型 用法 例句 2.由while引导的时间状语从句 while强调主句和从句中所表示的动作在同一时期发生。由于while从句表示持续的行为,所以从句中要用延续性动词或状态动词,并且延续性动词常用进行时态。 While I'm doing my homework, my mom is cooking dinner. 当我在做作业的时候,妈妈正在做晚饭。 类型 用法 例句 3.由before引导的时间状语从句 before意为“在……之前”,一般表示主句的动作发生在从句动作之前。 He had finished his work before I came back. 我回来之前,他已经完成了工作。 4.由after引导的时间状语从句 after意为“在……之后”,表示主句的动作发生在从句动作之后。 I went to bed after I finished reading the book. 在看完那本书之后我上床睡觉。 类型 用法 例句 5.由as soon as 引导的时间状语从句 as soon as 意为“一……就……”,强调两个动作紧密相连,几乎同时发生。如果主句是一般将来时,从句常用一般现在时表将来,即“主将从现”。 He jumped up as soon as he heard the good news. 他一听到这个好消息就跳起来了。 I will call you as soon as I arrive in New York. 我一到纽约就给你打电话。 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表示动作或状态一直持续到某个时刻,即“直到……”。 (1)表示“直到……为止”,主句和从句都用肯定式,主句谓语动词为持续性动词。 I'll wait until /till he comes back. 我会一直等到他回来为止。 (2)表示“ ... ...
