高考英语一轮复习精品课件《Module 2 Highlights of My Senior Year》（外研版版选修7）_高考复习指南

高考英语一轮复习精品课件《Module 2 Highlights of My Senior Year》（外研版版选修7）

　　语法 1.表语从句 (1)表语从句：在系动词之后对主语进行解释说明的从句，从而使主语的内容具体化。种类关联词例句说明从属连词 that whether as if/though because Her idea is that we should ask them to give us a definite answer.她的主张是我们应该要求他们给我们一个明确的答案。 The question is whether we should ask them for help.问题是我们是否请他们帮忙。 It looks as if/though it is going to rain.天看上去好像要下雨了。 that和whether在表语从句中不作任何成分，that无实义。在非正式的文体中that可以省去。但whether仍保留“是否”的意义。知识要点种类关联词例句说明连接代词 who(ever) whom(ever) what(ever) which(ever) whose(ever)等，连接代词在句中作主语或宾语。 The question is who (which of you) will be the next speaker.问题是谁（你们哪一位）接着发言。表语从句位于主句系动词之后。连接副词 when(ever) where(ever) why how(ever)等，连接副词在句中作状语。 This is where our problem lies.这就是我们的问题所在。知识要点

　　(2)系动词（be）及其他连系动词+表语从句除系动词be以外，还可用于表语从句的连系动词有：seem,appear,turn,get,look,taste,remain等。例句：The trouble is that we have never done the work before.麻烦在于我们以前从未干过这个工作。 It seems as if it is going to snow. 看起来天要下雪了。知识要点 (3)表语从句中需要注意的问题 ①通常只用that引导表语从句的情况： a.主语是名词reason（原因，理由）时，表语从句中的连接词要用that而不用why或because。例句：The reason for such a serious accident is that the driver was too careless and drunk. 这次严重的交通事故完全是由于司机太粗心，以及醉酒造成的。 b.主语是the result(表“结果”)时，表语从句的连接词用that。例句：The result is that most of them become fat. 结果是他们中的多数人都发胖了。知识要点 c.固定句型“The truth is that...”中，that不能换作其他词，引导的表语从句说明实际情况，相当于“The fact is that...”，意为“事实是……；实际情况是……”。例句：The truth is that most of us have never been there. 实际情况是我们中的多数人都从未去过那里。知识要点